Solubilizing emulsion based on mogroside as well as preparation method and application of solubilizing emulsion

Abstract

The invention relates to the technical field of food addition, and discloses a solubilizing emulsion based on mogroside as well as a preparation method and application of the solubilizing emulsion based on mogroside, and the solubilizing emulsion comprises the following raw materials: a composite amphiphilic emulsifier, medium-chain triglyceride oily liquid, amphiphilic solubilizing complex fat and mogroside. According to the invention, a compound lipid is adopted, the lipid has the functions of solubilizing and adjusting the density, and the amphiprotic solubilizing emulsifiers such as monoglyceride substances and the like are used, so that the stable dissolution of mogroside in the medium-chain triglyceride oily core liquid is effectively realized; the preparation method of the solubilizing emulsion based on mogroside has the characteristics of simple and convenient process, low cost, safety and harmlessness; according to the method, no organic solvent or special preparation equipment or process is needed, and the solubility of mogroside is remarkably improved on the basis of not changing the composition of the core liquid of the blast bead candy.

Description

Technical Field

[0001] The invention relates to the technical field of food additives, in particular to a mogroside solubilized emulsion and application thereof in food additives. Background Art

[0002] Mogroside, also known as mogroside or monk fruit sweet, is a white or light yellow powder obtained through the process of selecting monk fruit, extraction and filtration. Its melting point is between 197 and 201 degrees Celsius, and it decomposes at this temperature. The substance is naturally sweet and its sweetness is 300 times that of sucrose. Compared with other sweeteners, mogroside shows unparalleled advantages in ingredients, such as zero calories, helping to prevent tooth decay and no toxic side effects. The content of this ingredient in plants is high and has good water solubility. At present, products with a purity of more than 98% are used as food additives and are widely used in industries such as medicine, food, beverages and health products. Given the excellent water solubility of mogroside, it is gradually being used as a natural ingredient in many industries.

[0003] As an emerging functional soft drink, popping beads have gradually won the favor of consumers. Popping beads are mainly composed of inclusions (also known as core liquid) and shell materials. When the popping beads are broken, the core liquid can release liquid components to achieve the release effect of beneficial ingredients. The choice of shell material of the popping beads has a decisive influence on the mechanical properties and permeability of the product. Calcium alginate, as a shell material widely used in the pharmaceutical, food and beverage industries, uses calcium ion solution as a coagulation bath. The popping beads produced by the dripping method have achieved industrial production and have been widely promoted in the market.

[0004] In order to enhance the nutritional value of popping beads and improve their flavor and efficacy, specific ingredients can be added to the popping bead core liquid to prepare popping bead products with different flavors and efficacy. In addition to the drip-made products based on calcium alginate salt, the popping bead candies currently on the market also include products made of wall materials such as gelatin, carrageenan, agar, pectin, and modified starch. The main components of these wall materials are all hydrophilic colloids. Due to their hydrophilic properties, this type of wall material is only suitable for encapsulating oily core liquids and their oil-soluble flavor ingredients. However, many edible flavors are water-soluble or alcohol-soluble, making them difficult to incorporate into existing popping bead products, which significantly limits their scope of application. Summary of the invention

[0005] In view of this, the present invention proposes a mogroside solubilized emulsion and its application in food additives, aiming to solve the problems existing in the prior art, provide a mogroside solubilized emulsion that can effectively solubilize water-soluble or alcohol-soluble edible flavors, and apply it to food additives to expand the flavor and efficacy of popping bead products.

[0006] The present invention provides a method for preparing a solubilized emulsion based on mogroside, the preparation method comprising:

[0007] The composite amphiphilic emulsifier and the medium-chain triglyceride oily liquid are mixed, heated in a water bath and stirred to obtain a binary mixed system;

[0008] Adding an amphiphilic solubilizing complex lipid into the binary mixed system and stirring evenly to obtain a ternary mixed system;

[0009] Adding mogroside to the ternary mixing system, heating in a water bath and stirring, to obtain the mogroside-based solubilized emulsion.

[0010] Preferably, the weight ratio of the composite amphiphilic emulsifier, the medium-chain triglyceride oily liquid, the amphiphilic solubilizing composite lipid and mogroside is 0.5-5:0.3-3:90-98:0.1-2.

[0011] Preferably, the composite amphiphilic emulsifier is composed of a composite lipid substance and an emulsifier;

[0012] The weight ratio of the complex lipid substance to the emulsifier is 0.3-3:0.5-5;

[0013] The complex lipid substance is a monoglyceride compound.

[0014] Preferably, the emulsifier is mono- and di-glycerol fatty acid esters, sucrose fatty acid esters, propylene glycol fatty acid esters, sorbitol fatty acid esters, xylitol monostearate or phospholipids.

[0015] Preferably, the amphiphilic solubilizing complex lipid is monoglyceride.

[0016] Preferably, when the composite amphiphilic emulsifier and the medium-chain triglyceride oily liquid are mixed and heated in a water bath and stirred, the heating temperature is 20-80°C.

[0017] Preferably, when mogroside is added to the ternary mixing system and heated in a water bath with stirring, the heating temperature is 20-50°C.

[0018] The present invention also provides a solubilized emulsion based on mogroside, which is prepared according to the preparation method of the solubilized emulsion based on mogroside.

[0019] The present invention also proposes an application of the solubilized emulsion based on mogroside in food additives.

[0020] The present invention also provides a food additive, the main component of which is the above-mentioned solubilized emulsion based on mogroside.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] By incorporating amphoteric solubilizing emulsifiers such as complex lipids with solubilizing and density regulating functions and monoglycerides with emulsifying effects, the stable solubilization of mogroside in the medium-chain triglyceride oily core liquid was successfully achieved; by adjusting the mogroside solubilized emulsion, while introducing sweeteners, the addition of complex lipids further enhanced the nutritional value and efficacy of this type of core liquid bursting bead products.

[0023] The preparation method of the solubilized emulsion based on mogroside provided by the present invention is simple in process, low in cost, safe and harmless, does not require the use of organic solvents or special preparation equipment and processes, and significantly improves the solubility of mogroside without changing the composition of the core liquid of the popping bead candy. The solubilized emulsion obtained by the preparation method expands the application field of mogroside as a food additive and provides new possibilities for sweetening the oily core liquid. DETAILED DESCRIPTION

[0024] The exemplary embodiments of the present disclosure will be described in more detail below. Although the exemplary embodiments of the present disclosure are shown below, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to be able to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below in conjunction with the embodiments.

[0025] The invention relates to a solubilized emulsion based on mogroside, which comprises by mass 0.3-3 weight percent (wt%) of compound lipids and 0.5-5 weight percent (wt%) of amphoteric solubilizing emulsifiers such as monoglyceride substances, 0.1-2 weight percent (wt%) of mogroside and 90-98 weight percent (wt%) of medium chain triglyceride oily liquid.

[0026] In the implementation of the present invention, when the content of amphoteric solubilizing emulsifiers such as compound lipids and monoglycerides is within the above range, if the content of the compound lipid is less than 0.3 weight percent (wt%), the solubilizing effect on mogroside is poor, resulting in poor fluidity of the emulsified mogroside; if it is higher than 3 weight percent (wt%), the solubilizing effect on mogroside is also poor, the density of the emulsified mogroside is greatly different from that of the system, and it is easy to separate after standing, and the solubilizing effect and stability of the mogroside solubilized emulsion cannot be ensured. For monoglyceride amphoteric solubilizing emulsifiers, if its content is lower than 0.5 weight percent (wt%), the emulsifying effect is poor, the solubilizing effect on mogroside is poor, and undissolved mogroside precipitation is easy to occur; if it is higher than 5 weight percent (wt%), it will lead to over-emulsification, making the system appear paste-like and lose fluidity. Therefore, the content of the amphoteric solubilizing emulsifier is preferably 0.3-3 weight percent (wt%) of complex lipids and 0.5-5 weight percent (wt%) of monoglycerides.

[0027] In the implementation of the present invention, when the dosage of the compound lipid and the amphoteric solubilizing emulsifier such as the monoglyceride substance is within the above range, the dosage of the two needs to be adjusted according to the compounding ratio. When the content ratio of the compound lipid to the monoglyceride substance is less than 0.2 or between 0.25-0.3, it will lead to excessive emulsification and poor system fluidity; when the content ratio of the compound lipid to the monoglyceride substance is greater than 0.3, the amount of the compound lipid is too large, the density difference of the system is large and stratification after emulsification occurs, and the emulsifier cannot completely disperse the mogroside; therefore, the content ratio of the compound lipid to the monoglyceride substance is preferably between 0.2-0.25.

[0028] The technical solution of the present invention is described in detail below through specific embodiments.

[0029] In the following examples, the mogroside (Huacheng Biological, food grade) used was purchased from Hunan Huacheng Biological Resources Co., Ltd.; the amphoteric solubilizing emulsifiers such as the complex lipids and monoglycerides used were all products sold on the market, such as Midaner mono- and diglycerol fatty acid esters (food grade) sold by Zhengzhou Dahe Food Technology Co., Ltd., sugar cabinet sucrose fatty acid esters (food grade) sold by Guangxi Fusai Food Additives Co., Ltd., propylene glycol fatty acid esters (food grade) sold by Henan Honest Food Co., Ltd., Runhua sorbitol fatty acid esters sold by Guangzhou Junxin Chemical Technology Co., Ltd., xylitol anhydride monostearate (food grade) sold by Henan Weiduomei Biotechnology Co., Ltd., and phospholipids sold by Hebei Meiye Siwei Biotechnology Co., Ltd.

[0030] Example 1

[0031] A solubilized emulsion based on mogroside and a preparation method thereof, involving the following components in mass ratio: 0.50wt% mogroside, 1.00wt% amphiphilic solubilizing compound lipid, 4.00wt% monoglyceride amphiphilic emulsifier (mono- and diglyceride fatty acid esters), and 94.50wt% medium-chain triglyceride oily liquid. When mixing the components, a specific order must be followed. The preparation steps are described in detail as follows:

[0032] First, 4.00 wt% of mono- and di-glycerol fatty acid esters of amphiphilic emulsifiers were mixed with 94.50 wt% of medium-chain triglyceride oily liquid and stirred in a 50° C. water bath to form a transparent and uniform binary mixed system;

[0033] Next, under the condition of heating and stirring in a water bath, 1.00 wt% of the amphiphilic solubilizing complex lipid is added to the above clear and uniform binary mixed system, and after sufficient stirring, a brown-yellow transparent and uniform ternary mixed system is obtained;

[0034] Then, after the ternary system is uniform, 0.50 wt% of mogroside is added, and the mixture is heated and stirred in a water bath until it is completely dissolved, thereby obtaining a uniform solubilized emulsion (no precipitation is produced after standing in a water bath or at room temperature);

[0035] Finally, the prepared solubilized emulsion was subjected to ultrasonic treatment to achieve a more uniform dispersion of the system, and no obvious precipitation was observed after being placed for a long time.

[0036] Example 2

[0037] A solubilized emulsion based on mogroside and a preparation method thereof, involving the following components in mass ratio: 0.50wt% mogroside, 0.99wt% amphiphilic solubilizing compound lipid, 4.28wt% compound amphiphilic emulsifier (mono- and diglycerol fatty acid esters and sucrose fatty acid esters in a ratio of 2:1), and 94.23wt% medium-chain triglyceride oily liquid. When mixing the components, a specific order must be followed. The specific preparation steps are as follows:

[0038] First, 4.28 wt % of a composite amphiphilic emulsifier (mono- and diglycerol fatty acid esters and sucrose fatty acid esters in a ratio of 2:1) was mixed with 94.23 wt % of a medium-chain triglyceride oily liquid and stirred in a 60° C. water bath to obtain a transparent and uniform binary mixed system;

[0039] Next, under the condition of heating and stirring in a water bath, the monoglyceride and medium-chain triglyceride oily liquid are mixed until transparent and uniform, and then 0.99 wt% of the amphiphilic solubilizing complex lipid is added and stirred sufficiently to form a brown-yellow, transparent and uniform ternary mixed system;

[0040] Then, 0.50 wt% of mogroside is added to the ternary system, and the mixture is heated and stirred in a water bath until it is completely dissolved, thereby obtaining a solubilized emulsion with uniform properties (no precipitation is produced after standing in a water bath or at room temperature);

[0041] Finally, the prepared solubilized emulsion was subjected to ultrasonic treatment to achieve a more uniform dispersion of the system, and no obvious precipitation was observed after being placed for a long time.

[0042] Example 3

[0043] A solubilized emulsion based on mogroside and a preparation method thereof, comprising the following components in mass ratio: 0.50wt% of mogroside, 1.00wt% of amphiphilic solubilizing compound lipid, 5.00wt% of monoglyceride amphiphilic emulsifier (propylene glycol fatty acid ester), and 93.50wt% of medium-chain triglyceride oily liquid. When mixing the components, the mixing order must be strictly followed, and the specific preparation steps are as follows:

[0044] First, 5.00 wt% of monoglyceride amphiphilic emulsifier (propylene glycol fatty acid ester) was mixed with 94.50 wt% of medium chain triglyceride oily liquid and stirred in a 50° C. water bath to form a transparent and uniform binary mixed system;

[0045] Next, under the condition of heating and stirring in a water bath, the mixture of monoglyceride and medium-chain triglyceride oily liquid is clarified and uniformly mixed, and then 1.00wt% of amphiphilic solubilizing complex lipid is added, and after sufficient stirring, a brown-yellow transparent and uniform ternary mixed system is obtained;

[0046] Then, after the ternary system is uniform, 0.50 wt% of mogroside is added, and the mixture is heated and stirred in a water bath until it is completely dissolved, thereby obtaining a uniform solubilized emulsion (no precipitation is produced after standing in a water bath or at room temperature);

[0047] Finally, the prepared solubilized emulsion was subjected to ultrasonic treatment to make the system more evenly dispersed, and no obvious precipitation was observed after being placed for a long time.

[0048] Example 4

[0049] A solubilized emulsion based on mogroside and a preparation method thereof, involving the following components in mass ratio: 0.52% mogroside, 1.01% amphiphilic solubilizing compound lipid, 4.40% compound amphiphilic emulsifier (mono- and diglycerol fatty acid esters and sorbitol fatty acid esters in a ratio of 2:1), and 94.07% medium-chain triglyceride oily liquid. When mixing the components, a specific order must be followed, and the preparation steps are detailed as follows:

[0050] First, 4.40% of a composite amphiphilic emulsifier (mono- and diglycerol fatty acid esters and sorbitol fatty acid esters in a ratio of 2:1) was mixed with 94.07% of a medium-chain triglyceride oily liquid and stirred in a 60° C. water bath to form a transparent and uniform binary mixed system;

[0051] Next, the monoglyceride and medium-chain triglyceride oily liquids were mixed until transparent and uniform, and then 1.01% of the amphiphilic solubilizing complex lipid was added thereto under heating and stirring in a water bath, and after sufficient stirring, a brown-yellow, transparent and uniform ternary mixed system was obtained;

[0052] Then, 0.52% of mogroside was added to the ternary system, and the mixture was heated in a water bath and stirred until it was completely dissolved, thereby obtaining a solubilized emulsion (precipitation may occur after standing in a water bath or at room temperature for a long time);

[0053] Finally, the prepared solubilized emulsion is subjected to ultrasonic treatment to disperse the system. After standing for a long time, the system will separate into layers to form an upper brown-yellow transparent liquid phase and a lower emulsion.

[0054] Example 5

[0055] A solubilized emulsion based on mogroside and a preparation method thereof, comprising the following components in the following mass ratios: 0.58% of mogroside, 3.22% of amphiphilic solubilizing compound lipid, 4.07% of monoglyceride amphiphilic emulsifier (xylitol anhydride monostearate), and 92.13% of medium chain triglyceride oily liquid. When mixing the components, the mixing order must be strictly followed, and the specific preparation steps are as follows:

[0056] First, 4.07% of monoglyceride amphiphilic emulsifier (xylitol anhydride monostearate) was mixed with 92.13% of medium chain triglyceride oily liquid and stirred in a 60°C water bath until a transparent and uniform binary mixed system was formed;

[0057] Next, the mixture of monoglyceride and medium-chain triglyceride oily liquid was clarified and uniformly mixed under the conditions of heating and stirring in a water bath, and then 3.22% of amphiphilic solubilizing complex lipid was added thereto, and after sufficient stirring, a brown-yellow transparent and uniform ternary mixed system was obtained;

[0058] Then, after the ternary system is uniform, 0.58% of mogroside is added, and the mixture is heated and stirred in a water bath until it is completely dissolved, thereby obtaining a solubilized emulsion (precipitation may occur after standing for a long time in a water bath or at room temperature);

[0059] Finally, the prepared solubilized emulsion is subjected to ultrasonic treatment to disperse the system. After standing for a long time, stratification may occur, with the upper layer being a brown-yellow transparent liquid phase and the lower layer being an emulsion.

[0060] Example 6

[0061] A solubilized emulsion based on mogroside and a preparation method thereof, involving the following components in mass ratio: 0.50wt% mogroside, 1.11wt% amphiphilic solubilizing compound lipid, 3.71wt% compound amphiphilic emulsifier (mono- and diglycerol fatty acid esters and sucrose fatty acid esters in a ratio of 2:1), and 94.68wt% medium-chain triglyceride oily liquid. When mixing the components, a specific order must be followed, and the preparation steps are detailed as follows:

[0062] First, 3.71 wt % of a composite amphiphilic emulsifier (mono- and diglycerol fatty acid esters and sucrose fatty acid esters in a ratio of 2:1) was mixed with 94.68 wt % of a medium-chain triglyceride oily liquid and stirred in a 50° C. water bath to form a transparent and uniform binary mixed system;

[0063] Next, under the condition of heating and stirring in a water bath, the monoglyceride and medium-chain triglyceride oily liquid were mixed until transparent and uniform, and then 1.11 wt% of the amphiphilic solubilizing complex lipid was added and stirred thoroughly to form a brown-yellow, transparent and uniform ternary mixed system;

[0064] Then, 0.50 wt% of mogroside is added to the ternary system, and the mixture is heated in a water bath and stirred until it is completely dissolved, thereby obtaining a solubilized emulsion (precipitation may occur after standing for a long time in a water bath or at room temperature);

[0065] Finally, the prepared solubilized emulsion is subjected to ultrasonic treatment to disperse the system. After standing, stratification may occur, with the upper layer being a brown-yellow transparent liquid phase and the lower layer being an emulsion.

[0066] Example 7

[0067] A solubilized emulsion based on mogroside and a preparation method thereof, comprising the following components in the following mass ratios: 0.52wt% of mogroside, 1.14wt% of amphiphilic solubilizing compound lipid, 4.53wt% of monoglyceride amphiphilic emulsifier (phospholipid), and 93.81wt% of medium-chain triglyceride oily liquid. When mixing the components, attention must be paid to the mixing order. The specific preparation steps are as follows:

[0068] First, 4.53 wt% of monoglyceride amphiphilic emulsifier (phospholipid) was mixed with 93.81 wt% of medium chain triglyceride oily liquid, and stirred in a water bath at 60° C. to obtain a clear and uniform binary mixed system;

[0069] Next, 1.14 wt% of an amphiphilic solubilizing complex lipid was added to a clear and uniform mixed solution obtained by mixing the monoglyceride and the medium-chain triglyceride oily liquid, and the mixture was fully mixed under heating and stirring in a water bath, thereby obtaining a brown-yellow, clear and uniform ternary mixed system;

[0070] Then, after the ternary system is homogenized, 0.52 wt% of mogroside is added, heated in a water bath and stirred until completely dissolved, to obtain a solubilized emulsion (no precipitation is observed after standing in a water bath or at room temperature, but the fluidity is poor);

[0071] Finally, the prepared solubilized emulsion was subjected to ultrasonic treatment to achieve a more uniform dispersion of the system. No obvious precipitation was observed after long-term storage, although its fluidity was still poor.

[0072] Example 8

[0073] A solubilized emulsion based on mogroside and a preparation method thereof, involving the following components in mass ratio: 0.50wt% mogroside, 1.00wt% amphiphilic solubilizing compound lipid, 3.00wt% monoglyceride amphiphilic emulsifier (sucrose fatty acid ester), and 95.50wt% medium chain triglyceride oily liquid. When mixing the components, a specific order must be followed. The specific preparation steps are as follows:

[0074] First, a component containing 3.00 wt% of monoglyceride amphiphilic emulsifier (sucrose fatty acid ester) and 95.50 wt% of medium chain triglyceride oily liquid were mixed and stirred in a 50° C. water bath to obtain a clear and uniform binary mixed system;

[0075] Next, after the binary mixed system is clear and uniform, a component containing 1.00 wt% of an amphiphilic solubilizing complex lipid is added thereto while continuing to heat and stir in a water bath, and after sufficient stirring, a brown-yellow, clear and uniform ternary mixed system is obtained;

[0076] Then, after the ternary system is uniform, a component containing 0.50 wt% of mogroside is added, heated in a water bath and stirred until completely dissolved, thereby preparing a solubilized emulsion (if the emulsification effect is not good, the mogroside may be stratified after standing in a water bath or at room temperature);

[0077] Finally, the prepared solubilized emulsion is subjected to ultrasonic treatment to disperse the system, and stratification may occur after standing for a long time.

[0078] Example 9

[0079] A solubilized emulsion with mogroside as a sweetener and a preparation method thereof, comprising the following components in mass ratio: 0.58% of mogroside, 4.07% of monoglyceride amphiphilic emulsifier (propylene glycol fatty acid ester), and 95.35% of medium-chain triglyceride oily liquid. When mixing the components, a specific order must be followed. The specific preparation steps are as follows:

[0080] First, 4.07% of monoglyceride amphiphilic emulsifier (propylene glycol fatty acid ester) and 95.35% of medium chain triglyceride oil liquid were mixed according to the proportion, and stirred in a 60° C. water bath until a transparent and uniform binary mixed system was formed;

[0081] Next, 0.58% of mogroside was added to the binary system, and the mixture was heated and stirred in a water bath until the mogroside was completely dissolved. At this point, the obtained solubilized emulsion was in a paste-like state and had no fluidity.

[0082] Finally, the prepared solubilized emulsion is subjected to ultrasonic treatment, and the product after treatment still remains in a paste state and has no fluidity.

[0083] Example 10

[0084] A solubilized emulsion based on mogroside and a preparation method thereof, involving the following components in mass ratio: 0.10wt% mogroside, 2.35wt% amphiphilic solubilizing compound lipid, and 97.55wt% medium-chain triglyceride oily liquid. When mixing the components, the mixing order must be strictly followed, and the specific preparation steps are as follows:

[0085] First, 2.35 wt% of an amphiphilic solubilizing complex lipid and 97.55 wt% of a medium-chain triglyceride oily liquid were mixed according to a ratio, and stirred in a 50° C. water bath until a transparent and uniform binary mixed system was formed;

[0086] Next, 0.10 wt % of mogroside is added to the binary system, and the mixture is heated and stirred in a water bath until it is completely dissolved, thereby obtaining a uniform mogroside sweetener solution (no precipitation occurs after standing in a water bath or at room temperature);

[0087] Finally, the prepared solubilized emulsion was subjected to ultrasonic treatment to ensure that the system was more evenly dispersed, and no obvious precipitation was observed after being placed for a long time.

[0088] Embodiment 11

[0089] A solubilized emulsion based on mogroside and a preparation method thereof, involving the following components in mass ratio: 1.94% mogroside, 3.97% amphiphilic solubilizing compound lipid, 15.98% monoglyceride amphiphilic emulsifier (phospholipid), and 78.11% medium chain triglyceride oily liquid. When mixing the components, a specific order must be followed. The specific preparation steps are as follows:

[0090] First, a component containing 15.98% monoglyceride amphiphilic emulsifier (phospholipid) and a component containing 78.11% medium chain triglyceride oil liquid were mixed and stirred in a 60° C. water bath to form a transparent and uniform binary mixed system;

[0091] Next, under the condition of heating and stirring in a water bath, a 3.97% amphiphilic solubilizing compound lipid is added to the clear and uniform oily mixture of monoglycerides and medium-chain triglycerides, and after sufficient stirring, a brown-yellow transparent and uniform ternary mixed system is obtained;

[0092] Then, 1.94% mogroside was added to the ternary system, and the mixture was heated and stirred in a water bath until it was completely dissolved, thereby obtaining a uniform solubilized emulsion (no precipitation was observed after standing in a water bath or at room temperature);

[0093] Finally, the prepared solubilized emulsion was subjected to ultrasonic treatment to achieve a more uniform dispersion of the system, and no obvious precipitation was observed after being placed for a long time.

[0094] Example 12

[0095] A solubilized emulsion based on mogroside and a preparation method thereof, involving the following components in mass ratio: 0.51% mogroside, 1.02% amphiphilic solubilizing compound lipid, 4.11% compound amphiphilic emulsifier (mono- and diglycerol fatty acid esters and xylitol monostearate in a ratio of 2:1), and 94.36% medium-chain triglyceride oily liquid. When mixing the components, a specific order must be followed, and the preparation steps are detailed as follows:

[0096] First, 4.11% of a composite amphiphilic emulsifier (mono- and diglycerol fatty acid esters and xylitol monostearate in a ratio of 2:1) was mixed with 94.36% of a medium-chain triglyceride oily liquid and stirred in a 60°C water bath to form a transparent and uniform binary mixed system;

[0097] Next, under the condition of heating and stirring in a water bath, the monoglyceride and medium-chain triglyceride oily liquid were mixed until transparent and uniform, and then 1.02% of the amphiphilic solubilizing compound lipid was added and fully stirred to form a brown-yellow, transparent and uniform ternary mixed system;

[0098] Then, 0.51% of mogroside was added to the ternary system, and the mixture was heated and stirred in a water bath until it was completely dissolved, thereby obtaining a solubilized emulsion (precipitation may occur after standing for a long time in a water bath or at room temperature);

[0099] Finally, the prepared solubilized emulsion is subjected to ultrasonic treatment to disperse the system. After standing for a long time, the system will be separated into layers to form an upper brown-yellow transparent liquid phase and a lower emulsion.

[0100] Test Example 1

[0101] The solubilized emulsions of mogroside prepared in the above Examples 1-4 and 11-12 exhibit uniform properties and good fluidity, and will not stratify or precipitate even if left for a long time; Examples 5-9 show comparative cases where the proportion of a single or compounded emulsifier is exceeded; and Example 10 is a comparative example in which only a large amount of compound lipid is used without using an emulsifier, and the dissolution effect of the compound lipid is still satisfactory. Specific results and comparative examples are shown in Table 1 below.

[0102] Table 1

[0103]

[0104]

[0105] The present invention utilizes the physical properties of medium-chain triglyceride oily liquid, and combines the properties of mogroside, and adds amphiphilic substances to promote dissolution, thereby improving the solubility of mogroside in medium-chain triglyceride oily liquid. However, in view of the high polarity of mogroside, it is incompatible with the non-polar medium-chain triglyceride oily liquid. To solve this problem, on the basis of solubilization and solubilization, the present invention further introduces a single or composite amphoteric emulsifier to enhance the dissolution effect and prepare an emulsion. This method ensures that the incompletely dissolved mogroside can be evenly dispersed in the mixed liquid, and finally forms a stable mogroside solubilized emulsion, ensuring that mogroside will not precipitate. Through water bath or ultrasonic treatment, the finally obtained mogroside solubilized emulsion is evenly dispersed, has consistent properties, and has no obvious changes after standing for a long time.

[0106] In summary, the inventive principle and mechanism of the present invention is a mogroside solubilized emulsion, the mass content of which includes 0.3-3 weight percent of compound fat and 0.5-5 weight percent of monoglyceride substances and other amphoteric solubilizing emulsifiers, as well as 0.1-2 weight percent of mogroside and 90-98 weight percent of medium chain triglyceride oily liquid. In the implementation of the present invention, when the content of compound fat and monoglyceride substances and other amphoteric solubilizing emulsifiers is within the above range, if the content of compound fat is lower than 0.3 weight percent, the solubilization effect of mogroside is not good, resulting in poor fluidity of emulsified mogroside; if it is higher than 3 weight percent, the solubilization effect of mogroside is also not good, the density of emulsified mogroside is greatly different from that of the system, and it is easy to stratify after standing, and the solubilization effect and stability of the mogroside solubilized emulsion cannot be ensured. For monoglyceride-based amphoteric solubilizing emulsifiers, if their content is less than 0.5 weight percent, the emulsification effect is poor, the solubilization effect on mogroside is poor, and undissolved mogroside precipitation is easily generated; if it is higher than 5 weight percent, it will lead to over-emulsification, making the system paste-like and losing fluidity. Therefore, the content of the amphoteric solubilizing emulsifier is preferably 0.3-3 weight percent of the composite lipid and 0.5-5 weight percent of the monoglyceride-based substances. In the implementation of the present invention, when the amount of amphoteric solubilizing emulsifiers such as the composite lipid and the monoglyceride-based substances is within the above range, the amounts of the two need to be adjusted according to the compounding ratio. When the content ratio of the compound lipid to the monoglyceride substances is less than 0.2 or between 0.25-0.3, it will lead to excessive emulsification and poor fluidity of the system; when the content ratio of the compound lipid to the monoglyceride substances is greater than 0.3, the amount of the compound lipid is too large, the density difference of the system is large and stratification after emulsification occurs, and the emulsifier cannot completely disperse the mogroside; therefore, the content ratio of the compound lipid to the monoglyceride substances is preferably between 0.2-0.25.

[0107] From a microscopic perspective, the experimental principle of the present invention is based on the adsorption and arrangement behavior of emulsifiers at the oil-water interface. As a hydrophilic substance, mogroside has a low solubility in oily media, so it is necessary to improve its dispersibility in the oil phase through the action of emulsifiers. Complex lipids and monoglycerides, as amphoteric solubilizing emulsifiers, can form a stable interfacial film at the oil-water interface, thereby promoting the uniform dispersion of mogroside in the oil phase.

[0108] The adsorption process of compound lipids and monoglycerides at the oil-water interface involves intermolecular van der Waals forces, hydrogen bonds, and hydrophobic interactions. Compound lipid molecules usually have longer carbon chains and can form good hydrophobic interactions with medium-chain triglycerides in the oil phase, while monoglycerides can form hydrogen bonds with mogroside molecules due to their hydrophilic groups, thereby forming a stable interfacial film at the oil-water interface. When the content ratio of compound lipids to monoglycerides is between 0.2-0.25, the two can work synergistically to form an interfacial film that is both sufficiently hydrophobic and sufficiently hydrophilic, thereby ensuring the stable dispersion of mogroside in the oil phase.

[0109] In addition, the dispersion state of mogroside molecules in the oil phase is also related to its own molecular structure. Mogroside molecules have certain hydrophilicity and hydrophobicity, so they can form hydrogen bonds with monoglycerides through their hydrophilic groups at the oil-water interface, while the hydrophobic groups face the oil phase, thereby achieving stable dispersion. When the content ratio of complex lipids to monoglycerides is appropriate, a stable interfacial film can be formed, so that the mogroside molecules are evenly dispersed in the oil phase, avoiding aggregation and precipitation, thereby improving the stability and solubilization effect of the emulsion.

[0110] In summary, the present invention successfully achieves efficient solubilization and stable dispersion of mogroside in the oil phase by precisely controlling the content ratio of complex lipids and monoglycerides, as well as their adsorption and arrangement behaviors at the oil-water interface, providing a scientific basis for preparing high-quality mogroside solubilized emulsion.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for preparing a solubilized emulsion based on mogroside, characterized in that: The preparation method comprises: The composite amphiphilic emulsifier and the medium-chain triglyceride oily liquid are mixed, heated in a water bath and stirred to obtain a binary mixed system; Adding an amphiphilic solubilizing complex lipid into the binary mixed system and stirring evenly to obtain a ternary mixed system; Adding mogroside to the ternary mixing system, heating in a water bath and stirring, to obtain the mogroside-based solubilized emulsion.

2. The method for preparing the solubilized emulsion based on mogroside according to claim 1, characterized in that: The weight ratio of the composite amphiphilic emulsifier, the medium-chain triglyceride oily liquid, the amphiphilic solubilizing composite lipid and mogroside is 0.5-5:0.3-3:90-98:0.1-2.

3. The method for preparing the solubilized emulsion based on mogroside according to claim 1, characterized in that: The composite amphiphilic emulsifier is composed of a composite lipid substance and an emulsifier; The weight ratio of the complex lipid substance to the emulsifier is 0.3-3:0.5-5; The complex lipid substance is a monoglyceride compound.

4. The method for preparing the solubilized emulsion based on mogroside according to claim 3, characterized in that: The emulsifier is mono- and di-glycerol fatty acid ester, sucrose fatty acid ester, propylene glycol fatty acid ester, sorbitol fatty acid ester, xylitol monostearate or phospholipid.

5. The method for preparing the solubilized emulsion based on mogroside according to claim 1, characterized in that: The amphiphilic solubilizing complex lipid is monoglyceride of fatty acid.

6. The method for preparing the solubilized emulsion based on mogroside according to claim 1, characterized in that: When the composite amphiphilic emulsifier and the medium-chain triglyceride oily liquid are mixed and heated in a water bath and stirred, the heating temperature is 20-80°C.

7. The method for preparing the solubilized emulsion based on mogroside according to claim 1, characterized in that: Add mogroside to the ternary mixed system, heat in a water bath and stir at a heating temperature of 20-50°C.

8. A solubilized emulsion based on mogroside, characterized in that: The method for preparing the solubilized emulsion based on mogroside according to any one of claims 1 to 7 is used.

9. Use of the solubilized emulsion based on mogroside according to claim 8 in food additives.

10. A food additive, characterized in that: The main component of the food additive is the solubilized emulsion based on mogroside as claimed in claim 8.

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