Method for producing capsule, capsule, content, cured product, and composition

Abstract

A method for manufacturing a capsule, comprising: a step of curing a content comprising a core material and a curing agent to provide a cured content; and a step of bringing the cured content into contact with a contact solution containing a coating film-forming agent, thereby providing a capsule containing the cured content and a coating film encapsulating the cured content.

Description

Technical Field

[0001] This invention relates to capsule manufacturing methods, capsules, contents, solidified products, and compositions. Background Technology

[0002] In the manufacture of capsules containing food or other contents, a method such as the impregnation-curing coating method (orifice method) is used. This method is used, for example, in the manufacture of artificial salmon roe. In this method, the liquid to be encapsulated (core material) is dispersed in a polymer liquid such as alginate, and then dropped into a curing solution containing calcium, thereby providing a capsule.

[0003] Such capsules can encapsulate ingredients such as drugs, health foods, food products, and animal feed into a membrane prepared using solutions of proteins such as gelatin or polysaccharides such as starch. Therefore, they have wide applications in industries including the food and pharmaceutical industries.

[0004] Capsules are widely used as supplements and other so-called health foods, but ordinary foods using capsules are not well known. For example, JP2007-14252A discloses a sour seasoning containing capsules formed from a membrane based on agar, gellan gum, and / or carrageenan, which are filled with sesame-scented ingredients.

[0005] Furthermore, JP2018-143101A discloses a capsule for preventing the deterioration of food texture, which is used in an edible medium containing edible oil, and the capsule contains agar as the main component of the coating. The capsules disclosed in the aforementioned patent documents have a particle size of about 3 mm or smaller and a small encapsulation amount.

[0006] Such encapsulation can be performed using the orifice method or the reverse orifice method (reverse method) as described above. The orifice method involves mixing the material to be encapsulated (core material) with a polymer, and then dropping the polymer-mixed core material into a curing liquid to react with the polymer, thereby causing gelation. For example, JP2022-114451A discloses a soy sauce solution containing calcium salts, and how to drop the soy sauce solution into an aqueous sodium alginate solution to form capsules. Furthermore, for example, WO2011 / 138478A discloses a reverse rounding process for encapsulating wines such as sparkling wines. The capsule sizes disclosed in the aforementioned patent documents are also relatively small. Summary of the Invention

[0007] Technical issues The capsules containing food and the like disclosed in the aforementioned patent documents can impart new flavors and textures to food products supplied together with food capsules. However, depending on the application, a larger encapsulation volume is required.

[0008] On the other hand, capsules with large encapsulation capacities are manufactured by creating so-called empty capsules and filling them with contents. However, the steps of creating empty capsules and filling them with contents result in low efficiency. Furthermore, filling the contents may require higher technical skills and specialized equipment.

[0009] Problem Solving Methods In the orifice method and the reverse orifice method (reverse method), capsules are formed by dripping contents containing the core material into a curing liquid, resulting in high production rates. However, these methods utilize relatively weak forces such as surface tension for encapsulation, making it difficult to manufacture capsules with large encapsulation capacities.

[0010] Furthermore, the added contents first flatten on the surface of the curing liquid before entering it. Here, if the contents have low wettability to the curing liquid, a gelled polymer film will form while the surface tension minimizes the surface area, resulting in a roughly spherical shape. Conversely, if the surface tension is low relative to the droplet volume, the droplet is also difficult to spherical. Therefore, manufacturing capsules with large encapsulation capacities using methods such as dropping contents into the curing liquid is not easy.

[0011] In addition, as with the reverse orifice method (reverse method), where a mixture of core material and curing liquid is sealed inside the membrane and then poured into a polymer liquid, even if the membrane is rough, a capsule membrane may form on the outside of the membrane.

[0012] The inventors of this application conducted in-depth research and discovered that by placing a contents containing a core material and a curing agent in a mold and curing it, and then placing the cured contents (hereinafter referred to as the cured contents) into a contact solution, it is possible to manufacture capsules with a large encapsulation capacity. This disclosure is based on the above insights.

[0013] One embodiment of this disclosure includes the following aspects.

[0014] <1> A method for manufacturing capsules, comprising: The step of curing the contents, including the core material and the curing agent, to provide cured contents; and The step of contacting the solidified contents with a contact solution containing a film-forming agent to provide a capsule containing the solidified contents and a film encapsulating the solidified contents.

[0015] <2> according to <1> The method wherein the solidified contents are obtained by freezing the contents.

[0016] <3> according to <1> or <2> The method further includes the step of separating the capsule from the contact solution.

[0017] <4> according to <1> or <2> The method further includes the step of immersing the capsule in a solution containing 35% or more of the core material by volume.

[0018] <5> according to <1> or <2> The method wherein the contents comprise ethanol.

[0019] <6> according to <1> or <2> The method wherein the contents contain a thickener.

[0020] <7> according to <1> or <2> The method wherein the contents comprise at least one of xanthan gum and a water-soluble cellulose derivative.

[0021] <8> according to <1> or <2> The method wherein the temperature of the contact solution is 40°C or higher.

[0022] <9> according to <1> or <2> The method wherein the contents comprise a solid material.

[0023] <10> according to <7> The method wherein the solid material is a second capsule encapsulating a second content, or fruit pulp.

[0024] <11> according to <1> or <2> The method includes the step of contacting the capsule with a cation-converting solution to charge the surface of the capsule using cations.

[0025] <12> according to <1> or <2> The method further includes the step of coating the surface of the capsule.

[0026] <13> according to <1> or <2> The method wherein the amount of the solidified contents encapsulated in the capsule is 1 ml or more.

[0027] <14> according to <1> or <2> The method wherein the bursting load of the capsule is 1 to 10 N.

[0028] <15> according to <1> or <2> The method wherein the average thickness of the membrane is 10 μm to 10 mm.

[0029] <16> A capsule comprising: At least one of the contents containing the core material and the cured contents containing the core material; A membrane that encapsulates the contents and the solidified contents; and A coating that covers the membrane and comprises at least one of agar and gelatin. The total amount of the contents and the solidified contents is 1 ml or more.

[0030] <17> according to <16> The capsule, wherein the contents contain ethanol.

[0031] <18> according to <16> or <17> The capsule, wherein the contents and the solidified contents contain a thickener.

[0032] <19> according to <16> or <17> The capsule, wherein the contents and the solidified contents comprise at least one of xanthan gum and a water-soluble cellulose derivative.

[0033] <20> according to <16> or <17> The capsule, wherein the membrane seamlessly encapsulates the contents and the solidified contents.

[0034] <21> according to <16> or <17> The capsule, wherein the contents comprise a solid material.

[0035] <22> according to <21> The capsule, wherein the solid material is a second capsule encapsulating a second content, or fruit pulp.

[0036] <23> A contents comprising a core material and a curing agent, said contents being used according to <1> or <2> The manufacturing method described above.

[0037] <24> A solidified content, which is obtained by... <23> It is obtained by solidifying the contents.

[0038] <25> A composition comprising: according to <24> The solidified contents; and the contact solution containing the film-forming agent.

[0039] Beneficial effects of the invention The manufacturing method disclosed herein is capable of producing capsules with a large encapsulation capacity. Detailed Implementation

[0040] The contents of this disclosure will be described in detail below, but the contents of this disclosure are not limited thereto.

[0041] In this specification, the term "to" to indicate a range of values ​​is used in such a way that the values ​​described before and after it are used as the lower and upper limits.

[0042] In the numerical ranges described in this specification, the upper or lower limit of one numerical range can be replaced by the upper or lower limit of another numerical range described in the same specification. Furthermore, the upper or lower limit of the numerical ranges described in this specification can be replaced by the values ​​shown in the embodiments.

[0043] In this specification, a combination of two or more preferred aspects constitutes a more preferred aspect.

[0044] In this specification, the term "core material" refers to the material encapsulated in a capsule manufactured by the manufacturing method described herein.

[0045] In this specification, "water solubility" means a solubility of 0.1 g or more in 100 g of water at a pH of 7.0 and a liquid temperature of 22°C.

[0046] In this specification, "contact" between the solidified contents and the solution containing the reagent for forming a film includes not only the case where they are in contact with each other, but also the case where the solidified contents are immersed in the solution. Furthermore, this contact also includes the case where they are not in contact with each other, but the solidified contents are close enough to the solution containing the reagent for forming a film to initiate a reaction.

[0047] [Capsule manufacturing method] The method for manufacturing the capsules disclosed herein includes: The step of curing the contents, including the core material and the curing agent, to provide cured contents; and The step of contacting the solidified contents with a contact solution containing a film-forming agent to provide a capsule containing the solidified contents and a film encapsulating the solidified contents.

[0048] The method of manufacturing the capsules disclosed herein may further include the step of separating the capsules from the contact solution.

[0049] The method of manufacturing the capsule disclosed herein may further include the step of contacting the capsule with a cation-converting solution.

[0050] The method for manufacturing the capsule disclosed herein may further include a step of coating the surface of the capsule.

[0051] The following is an explanation of each step.

[0052] The manufacturing method disclosed herein is capable of producing capsules with a large encapsulation capacity.

[0053] Furthermore, the manufacturing method disclosed herein is capable of producing seamless capsules with excellent appearance.

[0054] Furthermore, capsules manufactured by the orifice method tend to gel over time, thus making the entire capsule a gel, but capsules manufactured by the manufacturing method of this disclosure are not prone to gelling over time.

[0055] (Steps for providing solidified contents) The method of manufacturing the capsule disclosed herein includes the step of curing contents comprising a core material and a curing agent to provide cured contents.

[0056] Solidified contents include not only completely solidified contents, but also contents that are in the solidification process and contents that are not yet completely solidified.

[0057] In one embodiment, solidification of the contents involves causing a phase change in the contents, such as freezing the contents or gelling the contents, preferably freezing the contents.

[0058] In one embodiment, solidifying the contents involves mixing liquid and solid materials.

[0059] In one embodiment, the solidified contents are contents that can maintain their shape at 25°C.

[0060] The viscosity of the solidified contents can be 0.1 Pa·s or higher, 1 Pa·s or higher, 5 Pa·s or higher, or 10 Pa·s or higher.

[0061] In this disclosure, viscosity is measured according to JIS K 7117-2.

[0062] Solidification of the contents can be achieved by freezing the contents. In this case, the freezing temperature is preferably adjusted appropriately according to the composition of the contents. For example, the temperature of the contents is preferably equal to or lower than its freezing point, more preferably 0 to -120°C, further preferably -10 to -70°C, and particularly preferably -20 to -50°C. The freezing point of ethanol is -117°C.

[0063] In this publication, freezing temperature refers to the temperature of the environment in which the contents are frozen.

[0064] There is no particular limitation on freezing time, but it is preferable to adjust it appropriately according to the freezing temperature, for example, it can be from 10 minutes to 48 hours.

[0065] Freezing of contents can be achieved, for example, by storing the contents in a freezer.

[0066] In one implementation, the contents can be cured after being placed into a mold of the desired shape.

[0067] There are no particular restrictions on the shape of the mold, and the shape of the capsule to be manufactured can be determined by the shape of the mold, thereby enabling the manufacture of capsules of various shapes and improving the design of capsules manufactured by the manufacturing method of this disclosure.

[0068] Examples of mold shapes include spheres, ovals, cubes, hearts, stars, rhombuses, and spades.

[0069] There are no particular restrictions on the method of removing the solidified contents from the mold. For example, the solidified contents can be removed by breaking the mold, or they can be removed without breaking the mold.

[0070] An example of a mold is shown below. Figures 1 to 3 .

[0071] like Figure 1 As shown, the hemispherical contents 510 frozen in the hemispherical mold 500 may bulge slightly out of the hemispherical mold 500 due to the expansion of water during freezing. When preparing frozen spheres, another hemispherical contents 512 (also frozen into a hemispherical shape) that have been refrozen are processed and stacked so that their half-cut surfaces 516 fit together, and then refrozen to form frozen spheres 514.

[0072] Figure 2 and Figure 3 In the attached figures, reference numerals 520 and 530 indicate molds.

[0073] <Contents> The contents contain a core material and a curing agent.

[0074] The contents may or may not contain special materials.

[0075] The contents may or may not contain additives.

[0076] There is no particular limitation on the amount of contents used in the manufacturing method of this disclosure. The manufacturing method of this disclosure is suitable for manufacturing capsules with a large encapsulation volume, which can be set to 1 ml or more, 3 ml or more, or even 5 ml or more. There is no particular upper limit to the encapsulation volume, which can be 1000 ml or less, 700 ml or less, or 600 ml or less.

[0077] The alcohol content is preferably 30% or less by volume relative to the total volume of the contents, more preferably 25% or less by volume, and even more preferably 20% or less by volume.

[0078] Setting the alcohol content to 30% or less by volume can advantageously promote the freezing of the contents when they are solidified by freezing.

[0079] There is no particular limit to the lower limit of the alcohol content ratio; the contents may not contain alcohol.

[0080] The alcohol content ratio refers to the content ratio in the contents at 25°C.

[0081] The contents can be obtained, for example, by mixing, dissolving or dispersing the components.

[0082] <Core material> In this disclosure, there are no particular limitations on the types of core materials, examples of which include pharmaceuticals, detergents, fabric softeners, health foods, food, and animal feed.

[0083] Furthermore, the core material can be any of liquid, powder, and solid.

[0084] The core material can be any of the following: alcohol, water, glucose, sugars such as saccharides such as sugar or fructose, salt, or other water-soluble liquids or aqueous solutions.

[0085] The core material can be ethanol or a beverage containing ethanol. Examples of beverages containing ethanol include sake, wine, whiskey, liqueurs, and vodka.

[0086] In addition, the core material can be those classified according to the manufacturing method and are commonly referred to as brewed wine, distilled wine, or fortified wine.

[0087] In addition, the core material can be grease and / or oil-soluble materials. Examples of grease include coconut oil, vegetable oil, and animal oil. Examples of oil-soluble materials include perfumes, aromatic oils, and menthol.

[0088] In addition, the core material can be water-based liquid foods such as soy sauce solution, condensed milk, various vinegars, white soup stock, carbonated alcoholic beverages, lemon juice, fruit juice, coffee, and carbonated fruit drinks.

[0089] The aforementioned soy sauce solution has a high sodium concentration, and the fruit juice has a low pH, making them difficult to encapsulate using methods such as orifice encapsulation. Even with such core materials, the manufacturing method of this disclosure allows for easy encapsulation.

[0090] The contents may contain one or more core materials.

[0091] The content of the core material relative to the total volume of the contents is preferably 30 vol% (vol%) or more, more preferably 45 vol% or more, further preferably 50 vol% or more, and may also be 70% or more or 80 vol% or more. By setting the content of the core material within the above-mentioned range, the core material characteristics such as taste and aroma can be maintained at a high level. There is no particular upper limit to the content ratio, but it may be 99 vol% or less, and 95 vol% or less.

[0092] <Curing agent> As a curing agent, polyvalent cationic salts can be used, examples of which include calcium salts, iron salts, zinc salts and aluminum salts.

[0093] When the core material is food or the capsule manufactured by the method described in this disclosure is edible, calcium salts are preferably those intended for food use, examples of which include calcium lactate, calcium chloride, and calcium gluconate.

[0094] When the core material is food or the capsule manufactured by the method described in this disclosure is edible, calcium lactate is preferably used as a curing agent.

[0095] Calcium chloride can be used as a curing agent, but when the capsules are edible, calcium lactate is preferred over calcium chloride from the point of view of maintaining taste, etc.

[0096] The contents may contain one or more curing agents.

[0097] The content of the curing agent relative to the total mass of the contents is preferably 1% or more by mass, more preferably 1.5% or more by mass, and even more preferably 2% or more by mass.

[0098] By setting the content of the curing agent to 1% or more by mass, the film formation performance can be improved.

[0099] There is no particular limitation on the content of the curing agent, but it is preferred, for example, to be 5% or less by weight, more preferably 4% or less by weight, and even more preferably 3% or less by weight.

[0100] The contents may contain a curing liquid containing a curing agent. For example, the contents may contain an aqueous solution (calcium lactate aqueous solution) containing a curing agent.

[0101] The curing agent content is preferably 1 to 7% by mass relative to the total mass of the aqueous solution containing the curing agent, and more preferably 2 to 5% by mass.

[0102] When the contents contain alcohol, the curing solution containing the curing agent may have difficulty forming a solution with the alcohol. By setting the content ratio of the curing agent within the above-mentioned range, the dispersibility of the curing solution in alcohol can be improved, thereby making it easier to prepare a solution.

[0103] Special Materials The contents may contain special materials. Examples of special materials include thickeners, dyes, and other solid materials. The contents may contain one or more special materials.

[0104] Examples of thickeners include gelatin, xanthan gum, guar gum, carrageenan, gum arabic, starch, and water-soluble cellulose derivatives.

[0105] The contents contain thickeners, which improve film-forming properties and capsule manufacturing yield.

[0106] From the viewpoint of improving film-forming properties, capsule manufacturing yield, and capsule strength, the thickener is preferably at least one of xanthan gum and water-soluble cellulose.

[0107] When the capsules manufactured by the method described in this disclosure are edible, they can be given an elastic texture by increasing the capsule strength.

[0108] From the perspective of suppressing wrinkles in the film, water-soluble cellulose is preferred as a thickener.

[0109] In this disclosure, cellulose derivatives refer to compounds obtained by introducing substituents such as methyl groups into the hydroxyl groups of cellulose molecules via ether or ester bonds.

[0110] Examples of water-soluble cellulose derivatives include methylcellulose, hydroxypropylcellulose, carboxymethylcellulose, and hydroxyethylcellulose.

[0111] The contents may contain one or more thickeners.

[0112] The content of thickener relative to the total mass of the contents is preferably 0.01 to 2% by mass, more preferably 0.02 to 1% by mass, even more preferably 0.03 to 0.7% by mass, particularly preferably 0.05 to 0.5% by mass, and most preferably 0.07 to 0.4% by mass.

[0113] By setting the thickener content ratio within the above-mentioned range, the film formation performance, capsule manufacturing yield, and capsule strength can be further improved.

[0114] Furthermore, when water-soluble cellulose derivatives are used as thickeners, by setting the content ratio of the thickener within the above-mentioned range, the film-forming performance and capsule manufacturing yield can be further improved, and the formation of wrinkles in the film can be effectively suppressed.

[0115] As pigments, conventionally known pigments can be appropriately selected and used. Examples of pigments include, but are not limited to, purple sweet potato pigment, gardenia red pigment, capsicum pigment, lac pigment, spirulina pigment, onion pigment, tamarind pigment, caramel pigment, curcumin pigment, sandalwood pigment (sandalwood red), krill pigment, orange pigment, carotene, blue No. 1, yellow No. 4, and green No. 3.

[0116] By including pigments in the contents, the solidified contents contained in the membrane can be colored, and the designability of the capsule manufactured by the manufacturing method of this disclosure can be improved.

[0117] The contents may contain one or more pigments.

[0118] The pigment content is preferably 0.01 to 0.1% by mass relative to the total mass of the contents, and more preferably 0.02 to 0.5% by mass.

[0119] By setting the pigment content ratio within the above-mentioned range, not only can the design of the capsule be further improved, but the characteristics of the core material can also be maintained (e.g., when the core material is food, such as taste, aroma, etc.).

[0120] In this disclosure, solid material refers to components other than core material, curing agent, thickener and dye, and refers to components that are solid at 25°C.

[0121] The contents may contain one or more solid materials.

[0122] In one embodiment, the solid material is the fleshy part of a fruit or vegetable, etc.

[0123] In one embodiment, the solid material is a second capsule encapsulating a second content. The second capsule may be a capsule manufactured by the manufacturing method described in this disclosure, a capsule manufactured by the manufacturing method disclosed in JP2022-114451A, a capsule manufactured by the orifice method, or a capsule manufactured by the reverse method.

[0124] The second content may be the same as or different from the content or solidified content.

[0125] In one embodiment, the contents contain alcohol as a core material, and the second contents contain lemon juice, fruit juice, etc. as a core material.

[0126] In one embodiment, the contents contain detergent as a core material, and the second contents contain fabric softener as a core material.

[0127] In one implementation, the solid material is a fibrous component. Examples of fibrous components include water-insoluble cellulose derivatives (crystalline cellulose).

[0128] There is no particular limitation on the content ratio of solid materials relative to the total mass of the contents; it is preferable to adjust it appropriately according to the purpose.

[0129] When pulp is used as the solid material, the content of solid material is preferably 3 to 50% by mass relative to the total mass of the contents, and more preferably 10 to 40% by mass.

[0130] When a second capsule is used as a solid material, the content of solid material is preferably 3 to 50% by mass relative to the total mass of the contents, and more preferably 10 to 40% by mass.

[0131] <Additives> The contents may contain additives. Examples of additives include preservatives, antioxidants, stabilizers, freshness-preserving agents, and emulsifiers.

[0132] There is no particular limitation on the content ratio of additives relative to the total mass of the contents; it is preferable to adjust it appropriately according to the purpose.

[0133] (Steps for providing capsules) The method of manufacturing a capsule disclosed herein includes the step of contacting a solidified content with a contact solution containing a film-forming agent to provide a capsule comprising the solidified content and a film encapsulating the solidified content.

[0134] "The solidified contents are contained within the capsule" means that the solidified contents can exist inside the capsule, and refers to an encapsulation state in which at least a portion of the solidified contents remain inside the capsule even if the molten contents leak out of the capsule.

[0135] In one embodiment, the solidified contents come into contact with the contact solution, thereby causing a gelation reaction between the curing agent and the film-forming agent, and forming a film on the surface of the solidified contents.

[0136] The capsule contains a membrane that can encapsulate the contents obtained by melting the solidified contents.

[0137] In one embodiment, two or more solidified contents may be encapsulated in the membrane. For example, a capsule may be manufactured by combining two solidified contents and contacting them with a contact solution.

[0138] There is no particular limitation on the amount of solidified contents encapsulated in the membrane. The manufacturing method of this disclosure is applicable to the manufacture of capsules with a large encapsulation volume, which can be set to 1 ml or more, 3 ml or more, or even 5 ml or more. There is no particular upper limit on the amount of solidified contents encapsulated, for example, it can be 1000 ml or less, 700 ml or less, or 600 ml or less.

[0139] From the viewpoint of improving capsule strength, the average thickness of the membrane is preferably 10 μm to 10 mm, more preferably 20 μm to 5 mm, even more preferably 30 μm to 3 mm, particularly preferably 50 μm to 2 mm, and may also be 100 μm to 1 mm.

[0140] The average thickness of the membrane is the average thickness at any five points.

[0141] In one embodiment, the contact between the solidified contents and the contact solution is achieved by immersing the solidified contents in the contact solution. All or part of the solidified contents may be immersed in the contact solution.

[0142] In one embodiment, the contact between the solidified contents and the contact solution is achieved by pouring the contact solution from above onto the solidified contents.

[0143] In one embodiment, contact between the solidified contents and the contact solution is achieved by spraying the contact solution onto the solidified contents.

[0144] In one embodiment, the contact between the solidified contents and the contact solution is achieved by placing the solidified contents in an environment, for example, where the contact solution has been sprayed.

[0145] When the solidified contents are frozen contents, it is assumed that through contact between the solidified contents and the contact solution, at least a portion of the frozen contents thaws, thereby causing the solidifying agent and film-forming agent contained therein to react with each other to form a film on its surface.

[0146] The contact time between the solidified contents and the contact solution is preferably adjusted according to, for example, the various components contained in the solidified contents and their content ratios, and the type and content ratio of the film-forming agent contained in the contact solution, for example, from 10 minutes to 48 hours.

[0147] <Contact solution> The contact solution contains a film-forming agent.

[0148] The contact solution contains a solvent for dissolving or dispersing the film-forming agent. Examples of such solvents include water and conventionally known organic solvents. Examples of water include distilled water, purified water, and deionized water.

[0149] The content of the film-forming agent relative to the total mass of the contact solution is preferably 0.1 to 3% by mass, more preferably 0.3 to 2% by mass, and particularly preferably 0.4 to 1% by mass.

[0150] By setting the content ratio of the film-forming agent within the above-mentioned range, the film-forming performance and capsule manufacturing yield can be improved.

[0151] There are no particular restrictions on the type of film-forming agent, as long as it can form a film around the solidified contents when the contact solution comes into contact with them.

[0152] In one embodiment, the film-forming agent is a gelling agent. Alginate is preferred as a gelling agent, and metal alginate is more preferred.

[0153] Examples of alginate metal salts include alkali metal salts such as sodium and potassium salts, alkaline earth metal salts such as calcium and magnesium salts, and metal salts such as iron and tin.

[0154] When the core material is a food product or the capsule manufactured by the method of this disclosure is edible, sodium alginate is preferred as a metal salt of alginate. By using sodium alginate, the capsule manufactured by the method of this disclosure can be transparent or translucent, thus allowing visual observation of the encapsulated solidified contents, thereby improving the design flexibility of the capsule.

[0155] Film-forming agents can be used alone, or in combination of two or more.

[0156] The temperature of the contact solution is preferably 25 to 100°C, more preferably 30 to 80°C, and even more preferably 40 to 75°C.

[0157] By setting the temperature of the contact solution within the above-mentioned range, the film formation performance and capsule manufacturing yield can be improved.

[0158] The temperature of the contact solution refers to the temperature of the contact solution before it comes into contact with the solidified contents, preferably the temperature of the contact solution within 5 minutes before contact with the solidified contents, more preferably the temperature of the contact solution within 1 minute before contact with the solidified contents, and even more preferably the temperature of the contact solution just before contact with the solidified contents (within 30 seconds).

[0159] The temperature difference between the contact solution and the surface temperature of the solidified contents is preferably 30°C to 100°C, more preferably 40°C to 95°C, and even more preferably 45°C to 90°C.

[0160] By setting the temperature difference within the above-mentioned range, the film formation performance and capsule manufacturing yield can be improved.

[0161] (Separation steps) The method of manufacturing the capsules disclosed herein may further include the step of separating the capsules from the contact solution.

[0162] There are no particular limitations on the separation method; for example, it can be carried out by removing the capsule from the contact solution using a wire mesh or the like.

[0163] The removed capsules can be washed with distilled water or other water as needed, or not.

[0164] From the viewpoint of inhibiting the binding between capsules, it is preferable to wash the removed capsules, more preferably within 5 minutes after removal, further preferably within 3 minutes, and particularly preferably within 1 minute.

[0165] (The step of contacting the solution with cations) The method for manufacturing the capsules disclosed herein may further include the step of contacting the capsules with a cation-donating solution. For example, the method may be carried out by immersing the capsules in the cation-donating solution.

[0166] By including this step in the manufacturing method of this disclosure, the strength of the capsule to be manufactured can be improved.

[0167] The capsules separated by the separation step exhibit a tendency to carry anionic charges on their surfaces. By contacting the capsules with a cation-converting solution, the surface of the capsules can be charged using cations, thereby increasing their strength.

[0168] <Cation-Assembly Solution> The cation-donating solution contains a cation-donating agent.

[0169] The cation-donating solution contains a solvent for dissolving or dispersing the cation-donating agent. The solvent is described above and its description is omitted here.

[0170] There are no particular limitations on cationic agents, as long as they can make the surface of the membrane cationic. Examples include chitosan, protamine, and poly-L-lysine.

[0171] Cationic donors can be used alone, or in combination of two or more.

[0172] The content of the cation donor is preferably 0.1 to 5% by mass relative to the total mass of the cation-donating solution, more preferably 0.3 to 3% by mass, and particularly preferably 0.4 to 2% by mass.

[0173] By setting the content ratio of the cationic agent within the above-mentioned range, the cationic transfer to the membrane surface can be effectively carried out, thereby improving the capsule strength.

[0174] (Steps for implementing package processing) The method for manufacturing the capsules disclosed herein may further include a step of coating the capsule surface. This step may be performed before or after the step of contacting the cation-attributing solution, but from the viewpoint of capsule strength, it is preferred to perform it after the step of contacting the cation-attributing solution.

[0175] Applying a coating treatment can form a coating on the surface of the capsule, thereby increasing its strength.

[0176] In one embodiment, coating treatment can be performed by contacting the capsule with a coating treatment solution. For example, coating treatment can be performed by immersing the capsule in the coating treatment solution.

[0177] Since the film and coating are partially or completely mixed, it is difficult to measure their average thickness. However, from the viewpoint of improving capsule strength, the sum of the average thicknesses of the film and coating is preferably 10 μm to 10 mm, more preferably 20 μm to 5 mm, even more preferably 30 μm to 3 mm, particularly preferably 50 μm to 2 mm, and may also be 100 μm to 1 mm.

[0178] The sum of the average thicknesses of the film and the coating is obtained by measuring at any five points.

[0179] <Coating solution> The coating treatment solution contains a coating agent.

[0180] The coating treatment solution contains a solvent for dissolving or dispersing the coating agent. The solvent is described above and its description is omitted here.

[0181] There are no particular restrictions on coating agents; examples include agar (agarose) and gelatin (collagen).

[0182] Coating agents can be used alone, or in combination of two or more.

[0183] The content of the coating agent relative to the total mass of the coating solution is preferably 0.1 to 5% by mass, more preferably 0.3 to 3% by mass, and particularly preferably 0.4 to 2% by mass.

[0184] By setting the content ratio of the coating agent within the above-mentioned range, a good coating layer can be formed, thereby improving the capsule strength.

[0185] There are no particular restrictions on the type of coating agent, as long as it can form a film around the solidified contents when the contact solution comes into contact with them.

[0186] In one embodiment, the coating agent is a gelling agent. Alginate is preferred as a gelling agent, and metal alginate is more preferred.

[0187] Examples of alginate metal salts include alkali metal salts such as sodium and potassium salts, alkaline earth metal salts such as calcium and magnesium salts, and metal salts such as iron and tin.

[0188] When the core material is a food product or the capsule manufactured by the method of this disclosure is edible, sodium alginate is preferably used as the metal salt of alginate. By using sodium alginate, the capsule manufactured by the method of this disclosure can be transparent or translucent, thus allowing visual observation of the encapsulated solidified contents, thereby improving the design flexibility of the capsule.

[0189] The temperature of the contact solution is preferably 25 to 100°C, more preferably 30 to 80°C, and even more preferably 40 to 75°C.

[0190] By setting the temperature of the contact solution within the above-mentioned range, the film formation performance and capsule manufacturing yield can be improved.

[0191] The temperature of the contact solution refers to the temperature of the contact solution before it comes into contact with the solidified contents, preferably the temperature of the contact solution within 5 minutes before contact with the solidified contents, more preferably the temperature of the contact solution within 1 minute before contact with the solidified contents, and even more preferably the temperature of the contact solution just before contact with the solidified contents (within 30 seconds).

[0192] There is no particular limitation on the contact time between the capsule and the coating treatment solution. It is preferable to adjust it appropriately according to the type of coating agent, its content ratio, etc., but it can be set to, for example, 5 minutes to 2 hours.

[0193] (Contact with core material solution) The method of manufacturing the capsule according to this disclosure may further include the step of contacting the capsule with a solution (core material solution) containing 35% or more of core material by volume. For example, contact may be achieved by immersing the capsule in the core material solution. The core material contained in the core material solution may or may not migrate into the membrane through this contact.

[0194] When the capsule manufactured by the method of this disclosure is edible, by including the contact step in the manufacturing method of this disclosure, the flavor and aroma of the core material can be imparted to the manufactured capsule.

[0195] The core material has already been described above, so its description is omitted. The core material contained in the film may be the same as or different from the core material contained in the core material solution.

[0196] The core material solution contains a solvent for dissolving or dispersing the core material. The solvent is described above, and its description is omitted here.

[0197] From the viewpoint of imparting the flavor and aroma of the core material well to the capsule, the content of the core material in the core material solution is preferably 40 to 99% by volume, more preferably 50 to 99% by volume.

[0198] There is no particular limitation on the contact time between the capsule and the core material solution. It is preferred to adjust it appropriately according to the type of core material, its content ratio, etc., but it can be, for example, 2 to 36 hours, 6 to 24 hours, or 10 to 20 hours.

[0199] The bursting load of the capsule manufactured by the manufacturing method described above is preferably 1 to 10 N, more preferably 2 to 8 N.

[0200] The burst strength of the capsule was measured using a creep tester.

[0201] Specifically, the capsule is placed on the sample stage of the creep tester and compressed from above by a plunger until the capsule height reaches 0.8H (a 20% reduction) from the initial height H. The burst strength of the capsule is then measured.

[0202] The height before compression is the height at which the plunger contacts the capsule and begins to sense pressure.

[0203] Creep meter: Made by Yamaden Co., Ltd. RE2-33005 C • Plunger: Disc-shaped (4cm) ) • Load sensor: 20 N • Speed: 10 mm / second (Other steps) The method of producing this disclosed text may include other steps besides those described above.

[0204] For example, it may include the step of applying sugar, dried fruit powder, chocolate powder, etc., to the surface of the film or coating.

[0205] In addition, the solidified contents in the capsule can be melted by performing treatments such as storing the capsule at room temperature or heating.

[0206] [capsule] The capsule disclosed herein comprises: at least one of a contents containing a core material and a solidified contents containing a core material; a membrane comprising the contents and the solidified contents; and a coating covering the membrane and comprising at least one of agar and gelatin. The total amount of the contents and the solidified contents is 1 ml or more.

[0207] In a second embodiment, the capsule of this disclosure comprises a solidified content containing a core material, and a membrane containing both the contents and the solidified content, wherein the solidified content is a frozen content. In the second embodiment, the membrane may encapsulate the contents containing the core material. Furthermore, a coating may be included that covers the membrane and contains at least one of agar and gelatin.

[0208] The contents and solidified contents may contain curing agents, special materials, additives, etc.

[0209] The membrane can encapsulate two or more solidified contents, or it can encapsulate two or more contents.

[0210] The types and proportions of the contents, cured contents, curing agents, special materials, additives, etc., are the same as those described in the manufacturing method of this disclosure, and therefore their description is omitted here.

[0211] The film and coating are similar to those described in the manufacturing method of this disclosure, so their description is omitted here.

[0212] The total amount of contents contained in the membrane and the solidified contents can be 1 ml or more, 3 ml or more, or 5 ml or more. There is no particular upper limit to the total amount; for example, it can be 1000 ml or less, 700 ml or less, or 600 ml or less.

[0213] From the perspective of improving capsule design, the membrane is preferably designed to seamlessly encapsulate and solidify the contents.

[0214] The bursting load of the capsule in this disclosure is preferably 1 to 10 N, more preferably 2 to 8 N.

[0215] The capsule of this disclosure can be manufactured by the manufacturing method described above, or by different methods.

[0216] One embodiment of this disclosed text capsule is as follows: Figures 23 to 25 As shown, but not limited to.

[0217] Figure 23 The capsule 100 shown includes: a membrane 101; and contents containing a core material and / or solidified contents containing a core material encapsulated in the membrane 101.

[0218] Figure 24 The capsule 200 shown comprises: a membrane 201; and contents containing a core material encapsulated within the membrane 201 and / or solidified contents 202 containing a core material. The contents containing the core material and / or the solidified contents containing the core material 202 include the second capsule 200 as a solid material.

[0219] Figure 25 The capsule 400 shown includes a membrane 401 and contents containing a core material encapsulated in the membrane 401 and / or solidified contents containing a core material 402 and 403. Figure 25 The capsule shown contains a solidified contents consisting of two contents and / or a core material encapsulated in a membrane.

[0220] [Contents] The contents of this disclosure include a core material and a curing agent, and are used in the manufacturing method of this disclosure described above.

[0221] The contents of this public document may contain special materials, additives, etc.

[0222] The types and proportions of core materials, curing agents, special materials, and additives have been described above, so their descriptions are omitted here.

[0223] [Solidated contents] The solidified content of this disclosure is obtained by solidifying the aforementioned content of this disclosure.

[0224] The solidified contents have been described in the manufacturing method described in the above disclosure, and therefore their description is omitted here.

[0225] [Composition] The composition of this disclosure contains the cured contents of this disclosure and a contact solution containing a film-forming agent.

[0226] The compositions disclosed herein may contain a film encapsulating solidified contents and a capsule containing solidified contents.

[0227] The contact solution and capsules have been described above, so their description is omitted here. Attached Figure Description

[0228] Figure 1 This is a schematic diagram illustrating one embodiment of the mold.

[0229] Figure 2 This is a schematic diagram illustrating one embodiment of the mold.

[0230] Figure 3 This is a schematic diagram illustrating one embodiment of the mold.

[0231] Figure 4 A photograph of the capsule is shown (Example 1).

[0232] Figure 5 A photograph of the capsule is shown (Example 2).

[0233] Figure 6 This is a photograph showing the effect of contact solution temperature on the appearance of the capsule.

[0234] Figure 7 This is a photograph showing the effect of contact solution temperature on the appearance of the capsule.

[0235] Figure 8 This is a photograph showing the effect of contact solution temperature on the appearance of the capsule.

[0236] Figure 9 This is a graph showing the effect of contact solution temperature on capsule formation rate.

[0237] Figure 10 This is a graph showing the effect of contact solution temperature on capsule formation rate.

[0238] Figure 11 This is a graph showing the effect of contact solution temperature on capsule formation rate.

[0239] Figure 12 This is a graph showing the burst load of the capsules manufactured in Examples 5a and 6a.

[0240] Figure 13 The initial capsule heights of the capsules manufactured in Examples 5a and 6a are shown.

[0241] Figure 14 This is a graph showing an example of the analysis of capsule strength.

[0242] Figure 15 The initial capsule heights of the capsules manufactured in Examples 6b and 9b are shown.

[0243] Figure 16 This is a photograph showing the capsule of Example 10.

[0244] Figure 17 This is a graph showing the fracture load and sample height in Example 14.

[0245] Figure 18 This is a graph illustrating the effect of the fracture load in Example 15.

[0246] Figure 19 This is a graph showing the effect on sample height in Example 15.

[0247] Figure 20 This is a graph illustrating the effect of the fracture load in Example 15.

[0248] Figure 21 This is a graph showing the effect on sample height in Example 15. Figure 22 This is a graph showing the concentration of the core material solution in the liquid encapsulated within the capsule.

[0249] Figure 23 This is a schematic cross-sectional view illustrating one embodiment of the text capsule of this disclosure.

[0250] Figure 24 This is a schematic cross-sectional view illustrating one embodiment of the text capsule of this disclosure.

[0251] Figure 25 This is a schematic cross-sectional view illustrating one embodiment of the text capsule of this disclosure.

[0252] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, the present disclosure is not limited to these embodiments.

[0253] Example [Preparation of contents] As core materials, commercially available tequila (40% ethanol (by volume), product name: Silver Tequila, manufacturer: Souza Tequila Import Company (Mexico), importer: Suntory Holdings Limited) and commercially available orange juice (product name: POM Pon Juice, name: Mixed Fruit Juice (Concentrated), ingredient name: Fruit (Orange (Brazil), Wenzhou Mandarin Orange (Japan)) / Flavor) were prepared.

[0254] As a curing agent, a 4% aqueous solution of calcium lactate was prepared (reagent name: calcium lactate (powder), mass standard, manufactured by Junsei Chemical Co., Ltd.).

[0255] In addition, commercially available xanthan gum (product name: xanthan gum standard (powder), manufactured by UnitecFoods Co., Ltd.) was prepared as a thickener, and 0.2% and 0.5% (mass basis) xanthan gum aqueous solutions were prepared respectively using deionized water.

[0256] In addition, commercially available methylcellulose (product name: Methylcellulose H (powder), manufactured by Unitec Foods Co., Ltd.) was prepared, and a 0.2% (mass basis) aqueous solution of methylcellulose was prepared using deionized water. Furthermore, commercially available crystalline cellulose (product name: Domestically Produced Microcrystalline Cellulose, manufactured by Nippon Garlic Corporation) was prepared, and a 0.2% (mass basis) aqueous solution of crystalline cellulose was also prepared.

[0257] In addition, purple sweet potato dye (product name: KC Red SL-9 (aqueous liquid), manufactured by Kobe Chemical Co., Ltd.), gardenia red dye (product name: KC Red KL-7 (aqueous liquid), manufactured by Kobe Chemical Co., Ltd.) and chili dye (product name: KC Orange PE-EN (chili dye emulsion), manufactured by Kobe Chemical Co., Ltd.) were prepared.

[0258] In addition, I prepared commercially available lemons (purchased from a supermarket).

[0259] (Example 1) The contents are provided by mixing equal volumes (by volume) of tequila and a 4% calcium lactate aqueous solution.

[0260] At 25°C, the content of calcium lactate relative to the total mass of the contents is 2% by mass.

[0261] At 25°C, the ethanol (including tequila) content in the contents is 20% by volume (the tequila content is 50% by volume).

[0262] (Example 2) The contents are prepared by mixing equal volumes (by volume) of orange juice and a 4% calcium lactate aqueous solution. At 25°C, the calcium lactate content relative to the total mass of the contents is 2% by mass.

[0263] (Example 3) The contents are prepared by mixing equal volumes (by volume) of distilled water and a 4% calcium lactate aqueous solution. At 25°C, the calcium lactate content relative to the total mass of the contents is 2% by mass.

[0264] (Example 4) The contents are prepared by mixing equal volumes (by volume) of tequila, a 4% calcium lactate aqueous solution, and a 0.5% xanthan gum aqueous solution. At 25°C, the calcium lactate content relative to the total mass of the contents is 2% by mass. At 25°C, the ethanol content (including tequila) in the contents is 20% by volume (tequila content is 50% by volume). At 25°C, the xanthan gum content relative to the total mass of the contents is 0.25% by mass.

[0265] (Example 5) The contents are prepared by mixing equal volumes (by volume) of tequila, a 4% calcium lactate aqueous solution, and a 0.2% xanthan gum aqueous solution. At 25°C, the calcium lactate content relative to the total mass of the contents is 2% by mass. At 25°C, the ethanol (containing tequila) content in the contents is 20% by volume (tequila content is 50% by volume). At 25°C, the xanthan gum content relative to the total mass of the contents is 0.1% by mass.

[0266] (Example 6) The contents are prepared by mixing equal volumes (by volume) of tequila, a 4% aqueous solution of calcium lactate, and 0.2% methylcellulose. At 25°C, the calcium lactate content relative to the total mass of the contents is 2% by mass. At 25°C, the ethanol (containing tequila) content in the contents is 20% by volume (tequila content is 50% by volume). At 25°C, the methylcellulose content relative to the total mass of the contents is 0.1% by mass.

[0267] (Example 7) The contents are prepared by mixing equal volumes (by volume) of orange juice, a 4% aqueous solution of calcium lactate, and an aqueous solution of xanthan gum. At 25°C, the calcium lactate content relative to the total mass of the contents is 2% by mass. At 25°C, the xanthan gum content relative to the total mass of the contents is 0.25% by mass.

[0268] (Example 8) The contents are prepared by mixing equal volumes (by volume) of distilled water, a 4% calcium lactate aqueous solution, and a 0.5% xanthan gum aqueous solution. At 25°C, the calcium lactate content relative to the total mass of the contents is 2% by mass. At 25°C, the xanthan gum content relative to the total mass of the contents is 0.25% by mass.

[0269] (Example 9) The contents are prepared by mixing equal volumes (by volume) of tequila, a 4% aqueous solution of calcium lactate, and 0.2% crystalline cellulose. At 25°C, the calcium lactate content relative to the total mass of the contents is 2% by mass. At 25°C, the ethanol (containing tequila) content in the contents is 20% by volume (tequila content is 50% by volume). At 25°C, the crystalline cellulose content relative to the total mass of the contents is 0.1% by mass.

[0270] (Example 10) The contents are prepared by mixing equal volumes (by volume) of orange juice, a 4% aqueous solution of calcium lactate, and 0.2% methylcellulose. At 25°C, the calcium lactate content relative to the total mass of the contents is 2% by mass. At 25°C, the methylcellulose content relative to the total mass of the contents is 0.1% by mass.

[0271] [Freezing of contents] In the above embodiments, 7 ml of each of the contents (mixed solutions) was placed in a hemispherical mold and frozen to provide frozen contents. The freezing temperature was -40°C and the freezing time was 1 hour.

[0272] The surface temperature of the frozen contents is -5°C.

[0273] [Preparation of contact solution] Commercially available sodium alginate (product name: sodium alginate (powder), manufactured by Marugo Corporation) was prepared, and a 0.5% (mass basis) sodium alginate aqueous solution was prepared using deionized water.

[0274] [Contact with the solution] 50 ml of a 0.5% sodium alginate aqueous solution was placed in a beaker and heated with a heater to provide a contact solution made of the 0.5% sodium alginate aqueous solution at approximately 70°C. A film was formed by adding, one by one, the frozen contents obtained from Examples 1 to 10, to the contact solution, thereby providing a hemispherical capsule with a diameter of approximately 3 cm.

[0275] At this point, the temperature of the solution in contact with the solution dropped by about 10°C.

[0276] [Separation from contact solution] The resulting hemispherical capsules, approximately 3 cm in diameter, were scooped up using a wire mesh and separated from the contact solution. The wire mesh was then washed with running water made from distilled water.

[0277] The frozen contents and the contents obtained by thawing the frozen contents were encapsulated in the membrane of the resulting capsule, and no liquid leakage was confirmed.

[0278] Furthermore, the resulting capsules were all seamless and had an excellent appearance.

[0279] In addition, the obtained capsules were placed in a container with a screw cap and stored at 4°C for one month. After storage, the capsules were cut open to check the contents, and no gelation was observed.

[0280] Figure 4 and Figure 5 Photographs of the capsules of Example 1 and Example 2 obtained at this time are shown.

[0281] (Examples 1a to 4a, Examples 7a and 8a: Changes in contact solution temperature) In addition, the temperature of the contact solution was changed to 4°C, 25°C, 40°C, 60°C or 80°C. Otherwise, the capsules were manufactured in the same manner as those manufactured using the frozen contents of Examples 1 to 4, 7 and 8.

[0282] The frozen contents and the contents obtained by thawing the frozen contents were encapsulated in the membrane of the resulting capsule, and no liquid leakage was confirmed.

[0283] Furthermore, the resulting capsules were all seamless and had an excellent appearance.

[0284] In addition, the obtained capsules were placed in a container with a screw cap and stored at 4°C for one month. After storage, the capsules were cut open to check the contents, and no gelation was observed.

[0285] Show the photo of the obtained capsule Figures 6 to 8 .

[0286] Figure 6 The upper part shows a variation of Embodiment 1.

[0287] Figure 6 The lower part shows a variation of Example 4.

[0288] Figure 7 The upper part shows a variation of Embodiment 2.

[0289] Figure 7 The lower part shows a variation of embodiment 7.

[0290] Figure 8 The upper part shows a variation of embodiment 3.

[0291] Figure 8 The lower part shows a variation of embodiment 8.

[0292] These figures show that when the temperature of the contact solution is 40°C or higher, the capsule surface becomes smooth, resulting in a superior capsule appearance and further improved design.

[0293] also, Figures 9 to 11 The yield of the capsules is shown.

[0294] The horizontal axis represents the temperature of contact with the solution (denoted as the capsule dissolution temperature in the figure), and the vertical axis represents the capsule formation rate.

[0295] Capsule formation rate refers to the number of capsules with undamaged membranes when 10 capsules are manufactured using the above method.

[0296] Figure 9 Xanthan gum (-) in the text indicates a variation of Example 1.

[0297] Figure 9 Xanthan gum (+) in the text indicates a variation of Example 4.

[0298] Figure 10 Xanthan gum (-) in the text indicates a variation of Example 2.

[0299] Figure 10 The xanthan gum (+) in the text indicates a variation of Example 7.

[0300] Figure 11 Xanthan gum (-) in the text indicates a variation of Example 3.

[0301] Figure 11 The xanthan gum (+) in the text indicates a variation of Example 8.

[0302] Figure 11 In the middle, the solid lines and dashed lines overlap each other.

[0303] (Examples 5a and 6a: Use of methylcellulose) (Example 5a) Except that xanthan gum was replaced with methylcellulose in Example 5, the capsules were manufactured in the same manner as described above.

[0304] (Example 6a) Except that in Example 6, methylcellulose was replaced with xanthan gum, the capsules were manufactured in the same manner as described above.

[0305] The frozen contents and the contents obtained by thawing the frozen contents were encapsulated in the membrane of the resulting capsule, and no liquid leakage was confirmed.

[0306] Furthermore, the resulting capsules were all seamless and had an excellent appearance.

[0307] In addition, the obtained capsules were placed in a container with a screw cap and stored at 4°C for one month. After storage, the capsules were cut open to check the contents, and no gelation was observed.

[0308] The bursting load and capsule height before compression (hereinafter also referred to as initial capsule height, denoted as sample height in the figure) of the capsules manufactured in Examples 5a and 6a are shown in the figure. Figure 12 and Figure 13 .

[0309] exist Figure 12 and Figure 13 In the figure, the bar containing 0.1% xanthan gum shows the results of Example 6a, and the bar containing 0.1% methylcellulose shows the results of Example 5a.

[0310] The bursting load is measured using a creep apparatus under the following conditions. Specifically, the capsule is placed with its hemispherical base in contact with the sample stage of the creep apparatus, and the capsule is compressed from above by a plunger until the capsule height reaches 0.8H (a 20% reduction) from its initial height H. The capsule bursts before reaching the compression ratio. The load at which it bursts is the bursting load.

[0311] Set the initial compression height to the height at which the plunger contacts the capsule and begins sensing pressure.

[0312] Creep meter: Made by Yamaden Co., Ltd. RE2-33005 C • Plunger: Disc-shaped (4cm) ) • Load sensor: 20 N • Speed: 10 mm / second Figure 14An example analysis of capsule strength is shown. The vertical axis represents the load (N), and the horizontal axis represents the distortion ratio (%) based on height. In this graph, the load increases in a roughly linear manner until the distortion ratio approaches 40%, reaches its maximum at approximately 40%, and then rapidly decreases. This point is taken as the breakage point, and the load is taken as the breakage load, and interpreted as the capsule's stiffness. The breakage measurement corresponds to the chewing operation, so the compression rate setting was determined by conducting preliminary experiments. Here, the distortion ratio is considered as a characteristic felt as capsule elasticity, while the breakage load is considered as a characteristic felt as ease of breakage (chewing resistance). As a preliminary test, sensory tests were conducted based on five subjects to investigate the correlation of these characteristics. A variety of samples were prepared so that the distortion ratio until breakage was approximately 30% to approximately 60%, and the elasticity was assessed by the subjects. This time, samples were prepared under essentially the same conditions as in Example 1, with the film thickness adjusted by varying the concentration, temperature, and immersion time of the sodium alginate aqueous solution to achieve different distortion ratios. Ultimately, approximately more than 50 samples broke, with most reporting a soft feel. On the other hand, among samples with a deformation rate of 43% to 45%, most people reported moderate elasticity and a comfortable bursting sensation. Conversely, samples with extremely thin coatings burst upon pinching alone. Furthermore, sensory evaluations were performed on the coated samples. For coated samples with nearly the same deformation rate (43% to 48%) as the uncoated samples, most people reported a greater sense of elasticity. Therefore, samples with a deformation rate of approximately 30% or higher, approximately 35% or higher, or approximately 40% or higher were considered superior in terms of mouthfeel. Additionally, samples with a deformation rate of approximately 80% or lower, approximately 70% or lower, or approximately 60% or lower were considered superior in terms of mouthfeel. Even at the same deformation rate, the coated samples appeared to have a superior mouthfeel.

[0313] According to experiments, the thickness corresponding to a deformation rate of about 30% is about 4.5 mm to about 5.7 mm, the thickness corresponding to a deformation rate of about 40% is about 6.0 mm to about 7.6 mm, and the thickness corresponding to a deformation rate of about 50% is about 7.5 mm to about 9.0 mm.

[0314] [The formation of wrinkles on the capsule surface] (Examples 6b and 9a) In addition to changing the cellulose used in Examples 6 and 9 to, as shown in Figure 15 Except as shown, capsules are manufactured in the same manner.

[0315] The frozen contents and the contents obtained by thawing the frozen contents were encapsulated in the membrane of the resulting capsule, and no liquid leakage was confirmed.

[0316] Furthermore, the resulting capsules were all seamless and had an excellent appearance.

[0317] In addition, the obtained capsules were placed in a container with a screw cap and stored at 4°C for one month. After storage, the capsules were cut open to check the contents, and no gelation was observed.

[0318] The initial capsule heights (represented as sample heights in the figure) of each manufactured capsule are shown below. Figure 15 The initial capsule height was measured using the method described above. Furthermore, Figure 15 The left side shows a variation of embodiment 6. Figure 15 The right side shows a variation of Example 9.

[0319] according to Figure 15 The results showed that capsules made using water-soluble cellulose derivatives had a greater initial capsule height compared to capsules not using water-soluble cellulose derivatives, and no wrinkles were formed on the membrane surface.

[0320] A photograph of the capsules made using the frozen contents of Example 10 is shown. Figure 16 Water-soluble cellulose was used here, so the capsule surface is wrinkle-free.

[0321] (Example 11) The contents were prepared by mixing equal volumes of tequila with 0.5% (volume basis) gardenia red dye and a 4% calcium lactate aqueous solution. At 25°C, the gardenia red dye content relative to the total mass of the contents was 0.25% by mass. At 25°C, the calcium lactate content relative to the total mass of the contents was 2% by mass. At 25°C, the ethanol (containing tequila) content in the contents was 20% by volume (the tequila content was 50% by volume).

[0322] (Example 12) The contents were prepared by mixing equal volumes of tequila with 0.5% (volume basis) of the above-mentioned capsicum dye added with a 4% calcium lactate aqueous solution. At 25°C, the capsicum dye content relative to the total mass of the contents was 0.25% by mass. At 25°C, the calcium lactate content relative to the total mass of the contents was 2% by mass. At 25°C, the ethanol (containing tequila) content in the contents was 20% by volume (the tequila content was 50% by volume).

[0323] Capsules were manufactured using the methods described above for the contents of Examples 11 and 12.

[0324] The frozen contents and the contents obtained by thawing the frozen contents were encapsulated in the membrane of the resulting capsule, and no liquid leakage was confirmed.

[0325] Furthermore, the resulting capsules were all seamless and had an excellent appearance.

[0326] In addition, the obtained capsules were placed in a container with a screw cap and stored at 4°C for one month. After storage, the capsules were cut open to check the contents, and no gelation was observed.

[0327] It was found that including dyes in the contents could improve the designability of the resulting capsules.

[0328] (Example 13) The contents are prepared by mixing equal volumes (by volume) of tequila and a 4% calcium lactate aqueous solution, and adding approximately 15% by weight of lemon pulp (or other solid material). At 25°C, the calcium lactate content relative to the total mass of the contents is 2% by weight. At 25°C, the ethanol (including tequila) content in the contents is 20% by volume (tequila content is 50% by volume). At 25°C, the calcium lactate content relative to the total mass of the contents is 2% by weight.

[0329] In addition to using the contents described above, the capsules are manufactured in the same manner as described above.

[0330] The frozen contents and the contents obtained by thawing the frozen contents were encapsulated in the membrane of the resulting capsule, and no liquid leakage was confirmed.

[0331] Furthermore, the resulting capsules were all seamless and had an excellent appearance.

[0332] In addition, the obtained capsules were placed in a container with a screw cap and stored at 4°C for one month. After storage, the capsules were cut open to check the contents, and no gelation was observed.

[0333] The above embodiments can encapsulate solid materials.

[0334] [Enhancing the capsule membrane (coating treatment)] (Example 14) Except that xanthan gum is not used, or the content of xanthan gum relative to the total mass of the contents is changed to 0.1% or 0.25%, the capsules are manufactured in the same manner as in Example 4, and the capsules are immersed in the cationic solution and left to stand at room temperature (25°C) for about 10 minutes.

[0335] The cation-donating solution at this time contains 0.1% (by mass) of poly-L-lysine (product name: SALAD KEEP, manufactured by Okuno Chemical Industries Co., Ltd.).

[0336] Then, the capsules used for immersion are scooped up with a wire mesh and separated from the cation-giving solution.

[0337] The capsules are then immersed in a coating solution containing a coating agent and left to stand at room temperature (25°C) for approximately 30 minutes, thereby forming a coating on the surface of the membrane. The coating solution contains 0.5% (by weight) agar (agarose) (product name: hot water soluble powdered agar, manufactured by Ina Food Industry Co., Ltd.).

[0338] Next, the capsules were scooped up with a wire mesh, separated, and washed with distilled water.

[0339] The frozen contents and the contents obtained by thawing the frozen contents were encapsulated in the membrane of the resulting capsule, and no liquid leakage was confirmed.

[0340] Furthermore, the resulting capsules were all seamless and had an excellent appearance.

[0341] In addition, the obtained capsules were placed in a container with a screw cap and stored at 4°C for one month. After storage, the capsules were cut open to check the contents, and no gelation was observed.

[0342] As a comparison, capsules that were not treated with the cation-donating solution and the coating treatment solution were prepared separately (untreated capsules).

[0343] [Measurement of capsule strength] The bursting load and capsule height of capsules treated with cation-addition solution and coating solution, and untreated capsules were measured at 1 day and 4 days after capsule manufacturing, respectively, and are shown in the figure. Figure 17 .

[0344] (Example 15) The capsules were manufactured in the same manner as in Example 7, except that xanthan gum was not used, or the content of xanthan gum relative to the total mass of the contents was changed to 0.1% or 0.25%.

[0345] The capsules were treated with a cation-donating solution and a coating treatment solution in the same manner as in Example 14.

[0346] Next, the capsules were scooped up with a wire mesh, separated, and washed with distilled water.

[0347] The frozen contents and the contents obtained by thawing the frozen contents were encapsulated in the membrane of the resulting capsule, and no liquid leakage was confirmed.

[0348] Furthermore, the resulting capsules were all seamless and had an excellent appearance.

[0349] In addition, the obtained capsules were placed in a container with a screw cap and stored at 4°C for one month. After storage, the capsules were cut open to check the contents, and no gelation was observed.

[0350] As a comparison, capsules that were not treated with the cation-donating solution and the coating treatment solution were prepared separately (untreated capsules).

[0351] The bursting load and capsule height (referred to as capsule height in the figure) of capsules treated with cation-donating solution and coating solution, and untreated capsules were measured at 1 day and 4 days after capsule manufacturing, respectively. Figures 18 to 21 .

[0352] (Example 16) Capsules made using the contents of Example 1 were immersed in a tequila stock solution, a tequila solution containing calcium chloride, or a tequila solution containing calcium lactate for 42 hours. The ethanol content relative to the mass of the solidified contents encapsulated in the capsule membrane and the total mass of the contents was measured at 2 hours, 6 hours, 12 hours, 18 hours, 30 hours, and 42 hours, respectively.

[0353] The calcium chloride content relative to the total mass of the tequila solution containing calcium chloride, and the calcium lactate content relative to the total mass of the tequila solution containing calcium lactate, are both 2% by mass.

[0354] The tequila content relative to the total mass of the tequila solution containing calcium chloride is 98% by volume, and the tequila content relative to the tequila solution containing calcium lactate is 50% by volume.

[0355] The results are shown in Figure 22 .

[0356] exist Figure 22 In the graph, the line graph connecting black dots represents the change in ethanol content of capsules left to stand in air over time; the line graph connecting black squares represents the change in ethanol content of capsules left to stand in tequila storage solution over time; the line graph connecting white triangles represents the change in ethanol content of capsules left to stand in tequila solution containing calcium chloride over time; and the line graph connecting white diamonds represents the change in ethanol content of capsules left to stand in tequila solution containing calcium lactate over time.

[0357] Based on the above results, it was found that by immersing the capsule in a tequila reserve solution, tequila is transferred to the solidified contents in the capsule, thereby enhancing the taste and aroma when the capsule is consumed.

[0358] (Example 17) For capsules manufactured using the contents obtained in Example 3, a coating is formed on the surface by treating them with a cation-attributing solution and a coating treatment solution in the same manner as described above.

[0359] The frozen contents and the contents obtained by thawing the frozen contents were encapsulated in the membrane of the resulting capsule, and no liquid leakage was confirmed.

[0360] Furthermore, the resulting capsules were all seamless and had an excellent appearance.

[0361] In addition, the obtained capsules were placed in a container with a screw cap and stored at 4°C for one month. After storage, the capsules were cut open to check the contents, and no gelation was observed.

[0362] (Example 18) The 0.5% sodium alginate aqueous solution in the contact solution was changed to a 1.0% sodium alginate aqueous solution, and the capsules were manufactured using the contents obtained in Example 3 in the same manner as described above.

[0363] The frozen contents and the contents obtained by thawing the frozen contents were encapsulated in the membrane of the resulting capsule, and no liquid leakage was confirmed.

[0364] Furthermore, the resulting capsules were all seamless and had an excellent appearance.

[0365] In addition, the obtained capsules were placed in a container with a screw cap and stored at 4°C for one month. After storage, the capsules were cut open to check the contents, and no gelation was observed.

[0366] (Example 19) The capsules obtained in Example 18 were treated with a cation-donating solution and a coating treatment solution in the same manner as described above, thereby forming a coating on the surface.

[0367] The frozen contents and the contents obtained by thawing the frozen contents were encapsulated in the membrane of the resulting capsule, and no liquid leakage was confirmed.

[0368] Furthermore, the resulting capsules were all seamless and had an excellent appearance.

[0369] In addition, the obtained capsules were placed in a container with a screw cap and stored at 4°C for one month. After storage, the capsules were cut open to check the contents, and no gelation was observed.

[0370] (Example 20) The hemispherical mold containing the contents was changed to a spherical mold, and the capsule was manufactured using the contents obtained in Example 3 in the same manner as described above.

[0371] The volume of the contents is 100 ml.

[0372] The frozen contents and the contents obtained by thawing the frozen contents were encapsulated in the membrane of the resulting capsule, and no liquid leakage was confirmed.

[0373] Furthermore, the resulting capsules were all seamless and had an excellent appearance.

[0374] In addition, the obtained capsules were placed in a container with a screw cap and stored at 4°C for one month. After storage, the capsules were cut open to check the contents, and no gelation was observed.

[0375] (Example 21) The hemispherical mold containing the contents was changed to a spherical mold, and the capsule was manufactured using the contents obtained in Example 3 in the same manner as described above.

[0376] The volume of the contents is 600 ml.

[0377] The frozen contents and the contents obtained by thawing the frozen contents were encapsulated in the membrane of the resulting capsule, and no liquid leakage was confirmed.

[0378] Furthermore, the resulting capsules were all seamless and had an excellent appearance.

[0379] In addition, the obtained capsules were placed in a container with a screw cap and stored at 4°C for one month. After storage, the capsules were cut open to check the contents, and no gelation was observed.

[0380] <Measurement of average thickness> The average thickness of the capsule membranes obtained in Examples 3 and 17 to 21 (in the case of a coating, the sum of the average thicknesses of the membrane and the coating) was measured and summarized in Table 1.

[0381] [Table 1]

Claims

1. A method for manufacturing capsules, comprising: The step of curing the contents, which include a core material and a curing agent, to provide cured contents; and The step of contacting the solidified contents with a contact solution containing a film-forming agent to provide a capsule containing the solidified contents and a film encapsulating the solidified contents.

2. The method according to claim 1, wherein, The solidified contents are obtained by freezing the contents.

3. The method according to claim 1 or 2, further comprising the step of separating the capsule from the contact solution.

4. The method of claim 1 or 2, further comprising the step of immersing the capsule in a solution containing 35% or more of the core material by volume.

5. The method according to claim 1 or 2, wherein, The contents contain ethanol.

6. The manufacturing method according to claim 1 or 2, wherein, The contents contain a thickener.

7. The method according to claim 1 or 2, wherein, The contents include at least one of xanthan gum and a water-soluble cellulose derivative.

8. The method according to claim 1 or 2, wherein, The temperature of the contact solution is 40°C or higher.

9. The method according to claim 1 or 2, wherein, The contents contain solid materials.

10. The method according to claim 7, wherein, The solid material is a second capsule containing a second content, or fruit pulp.

11. The method according to claim 1 or 2, further comprising the step of contacting the capsule with a cation-converting solution to charge the surface of the capsule using cations.

12. The method according to claim 1 or 2, further comprising the step of coating the surface of the capsule.

13. The method according to claim 1 or 2, wherein, The amount of the solidified contents encapsulated in the capsule is 1 ml or more.

14. The method according to claim 1 or 2, wherein, The bursting load of the capsule is 1 to 10 N.

15. The method according to claim 1 or 2, wherein, The average thickness of the membrane is 10 μm to 10 mm.

16. A capsule comprising: At least one of the contents containing the core material and the cured contents containing the core material; A membrane that encapsulates the contents and the solidified contents; and A coating that covers the membrane and comprises at least one of agar and gelatin. in, The total amount of the contents and the solidified contents is 1 ml or more.

17. The capsule according to claim 16, wherein, The contents contain ethanol.

18. The capsule according to claim 16 or 17, wherein, The contents and the solidified contents contain a thickener.

19. The capsule according to claim 16 or 17, wherein, The contents and the solidified contents comprise at least one of xanthan gum and a water-soluble cellulose derivative.

20. The capsule according to claim 16 or 17, wherein, The membrane seamlessly encapsulates the contents and the solidified contents.

21. The capsule according to claim 16 or 17, wherein, The contents contain solid materials.

22. The capsule according to claim 21, wherein, The solid material is a second capsule containing a second content, or fruit pulp.

23. A content comprising a core material and a curing agent, said content being used in the manufacturing method according to claim 1 or 2.

24. A solidified content obtained by solidifying the content according to claim 23.

25. A composition comprising: the solidified contents according to claim 24; and a contact solution comprising a film-forming agent.

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