Powdered emulsion composition

Abstract

To provide a powder emulsion composition, where an emulsified liquid obtained in a production step is excellent in emulsion stability even if highly containing glycerol succinic acid fatty acid ester as a main component, and after the emulsified liquid is powdered, the powder emulsion composition is excellent in water dispersibility and emulsion stability when dispersed in water and has a good powder quality.SOLUTION: A powder emulsion composition contains 30-60 mass% of glycerol succinic acid fatty acid ester and 2-70 mass% of starch sodium octenylsuccinate.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a powdery emulsion composition. [Background technology]

[0002] Glycerin succinic acid fatty acid esters, a type of food emulsifier, are used in various foods by utilizing their effects on proteins. For example, in bakery products such as bread, they are used to improve the quality of dough by utilizing their effects on wheat gluten, such as improving the extensibility and mechanical resistance of the dough, increasing the volume, and improving the texture. In beverage products, they are also used to suppress protein aggregation and precipitation that occur in beverages containing dairy ingredients.

[0003] As described above, glycerin succinic acid fatty acid esters are used in a variety of foods. However, because they are difficult to disperse or dissolve in water, they are often added to foods in the form of preparations containing glycerin succinic acid fatty acid esters as the main ingredient. Such preparations include liquid or paste-like preparations such as those in which glycerin succinic acid fatty acid esters are dissolved in fats and oils, or emulsified fats and oils in which water-soluble components are further blended and emulsified. However, these preparations have problems such as poor handling and storage stability. Powder-type preparations include (i) preparations in which glycerin succinic acid fatty acid esters themselves are spray-cooled and then mixed with a powdering agent, and (ii) preparations in which an emulsion containing glycerin succinic acid fatty acid esters, a powdered base, etc. is spray-dried. However, the powder-type preparation of (A) simply adjusts the content of glycerin succinic acid fatty acid ester by powder-powder mixing of glycerin succinic acid fatty acid ester and a diluting agent, while the powder-type preparation of (B) has problems such as separation occurring at the emulsion stage even when an attempt is made to increase the content of glycerin succinic acid fatty acid ester as the main component, and the powder quality after spray drying is coarse and water dispersibility is poor. Note that, as the powder-type preparation of (B), there are powdered oils and fats further blended with oils and fats, but the glycerin succinic acid fatty acid ester blended therein is blended in a small amount for the purpose of emulsifying the oil and fat, and does not have a high content of glycerin succinic acid fatty acid ester as the main component. Therefore, there is a demand for a powdery emulsion composition that contains a high content of glycerin succinic acid fatty acid ester as a main component, has good powder quality, and is excellent in water dispersibility.

[0004] Examples of techniques relating to powdery compositions containing glycerin succinic acid fatty acid esters include a powdered emulsifier comprising 20 to 80% by weight of (A) one or more emulsifiers that are paste-like or liquid at room temperature and are selected from the group consisting of glycerin fatty acid esters, sucrose fatty acid esters, sorbitan fatty acid esters, propylene glycol fatty acid esters, and lecithin, and 80 to 20% by weight of (B) a powdering agent consisting of (a) starch or a hydrolyzate thereof and an organic acid glycerin fatty acid ester (weight ratio 100:0.1 to 50), and / or (b) an emulsifying starch derivative or a hydrolyzate thereof (Patent Document 1), and a powdered emulsifier comprising (A) sucrose fatty acid ester, monoglycerin Examples of such a modifier include a batter modifier obtained by spray-drying a dispersion containing one or more emulsifiers selected from the group consisting of fatty acid monoesters, organic acid monoglycerides, and lecithin, and (B) one or more excipients selected from the group consisting of sugars and protein hydrolysates (Patent Document 2); and a modifier for wheat processed foods or starch processed foods obtained by spray-drying an oil-in-water emulsion containing (A) edible oils and / or oil-soluble emulsifiers, (B) a hydrophilic emulsifier, and (C) sugars and / or starch hydrolysates, characterized in that the median particle size of the liquid obtained by emulsifying and dispersing in water is 5 to 120 μm (Patent Document 3).

[0005] However, these patent documents do not provide any specific description of whether a powdery composition having a high content of a glycerin succinic acid fatty acid ester as a main component can be produced, or whether the powder quality and water dispersibility are good. Therefore, there is a need for a technology relating to a powdery composition having a high content of a glycerin succinic acid fatty acid ester as a main component, but having good powder quality and excellent water dispersibility. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 6-245719 [Patent Document 2] Japanese Patent Application Laid-Open No. 2002-65193 [Patent Document 3] Japanese Patent Application Laid-Open No. 2000-316504 Summary of the Invention [Problem to be solved by the invention]

[0007] An object of the present invention is to provide a powdery emulsion composition that, even when it contains a high content of a glycerin succinic acid fatty acid ester as a main component, has good emulsion stability in the emulsion obtained in the production process, and after being powdered, has excellent water dispersibility and emulsion stability when dispersed in water, and has good powder quality. [Means for solving the problem]

[0008] As a result of intensive research into the above-mentioned problems, the present inventors have found that the above-mentioned problems can be solved by a powdery emulsion composition containing a predetermined amount of a glycerin succinic acid fatty acid ester and starch sodium octenylsuccinate, and have completed the present invention based on this finding.

[0009] That is, the present invention provides: (1) A powdery emulsion composition containing 30 to 60% by mass of a glycerin succinic acid fatty acid ester and 2 to 70% by mass of starch sodium octenylsuccinate; (2) A method for producing the powdery emulsion composition according to (1), comprising the steps of obtaining an emulsion containing glycerin succinic acid fatty acid ester, starch sodium octenylsuccinate, and water, and drying and powdering the emulsion; It consists of: [Effects of the Invention]

[0010] Even though the powdery emulsion composition of the present invention contains a high content of glycerin succinic acid fatty acid ester as a main component, the emulsion obtained in the production process has good emulsion stability, and after powderization, it has excellent water dispersibility and emulsion stability when dispersed in water, and has good powder quality. DETAILED DESCRIPTION OF THE INVENTION

[0011] The glycerin succinic acid fatty acid ester used in the present invention is a compound in which at least one succinic acid and one fatty acid are ester-bonded to any of the hydroxy groups of glycerin, and is usually produced by a method known per se, such as a reaction between a glycerin mono-fatty acid ester and succinic anhydride (or succinic acid), or a reaction between glycerin, succinic acid, and a fatty acid.

[0012] In a method for producing the glycerin succinic acid fatty acid ester used in the present invention, for example, a glycerin mono-fatty acid ester and succinic anhydride are charged into a reaction vessel equipped with a stirrer, a heating jacket, a baffle, etc., in a mass ratio of glycerin mono-fatty acid ester to succinic anhydride (glycerin mono-fatty acid ester / succinic anhydride) of preferably 90 / 10 to 70 / 30, and an alkali catalyst is added as necessary. The mixture is heated at a temperature of preferably 90 to 130°C for preferably 10 to 180 minutes to carry out the esterification reaction. Examples of alkali catalysts include potassium hydroxide, sodium hydroxide, potassium carbonate, and sodium carbonate. Furthermore, the atmosphere inside the reaction vessel may be purged with an inert gas during the reaction to prevent coloration and odor of the reaction product.

[0013] The fatty acids constituting the glycerin succinic acid fatty acid ester used in the present invention are not particularly limited as long as they are fatty acids derived from edible animal or vegetable fats and oils, and examples thereof include saturated and unsaturated fatty acids having 6 to 24 carbon atoms. Examples of saturated fatty acids having 6 to 24 carbon atoms include caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, and lignoceric acid. Examples of unsaturated fatty acids having 6 to 24 carbon atoms include palmitoleic acid, oleic acid, elaidic acid, linoleic acid, γ-linolenic acid, α-linolenic acid, arachidonic acid, ricinoleic acid, and condensed ricinoleic acid. Among these, saturated or unsaturated fatty acids having 16 to 18 carbon atoms are preferred, and saturated fatty acids having 16 to 18 carbon atoms are more preferred. The glycerin succinic acid fatty acid ester may contain only one of these fatty acids as the constituent fatty acid, or may contain any two or more of these fatty acids as the constituent fatty acid.

[0014] Examples of glycerin succinic acid fatty acid esters that are commercially available include Poem B-10 (trade name; manufactured by Riken Vitamin Co., Ltd.) and Poem B-30 (trade name; manufactured by Riken Vitamin Co., Ltd.), and these can be used in the present invention.

[0015] The starch sodium octenylsuccinate used in the present invention is a modified starch obtained by esterifying starch with octenylsuccinic anhydride. Examples of starches that can be used as raw materials for starch sodium octenylsuccinate include potato starch, sweet potato starch, corn starch, wheat starch, rice starch, and tapioca starch.

[0016] The starch sodium octenylsuccinate used in the present invention is preferably a starch sodium octenylsuccinate having a viscosity of 10 to 200 mPa·s as measured in a 15% by weight aqueous solution at 30°C using a Brookfield viscometer (hereinafter referred to as the 15% by weight aqueous solution viscosity). The viscosity of a 15% by weight aqueous solution of starch sodium octenylsuccinate can be measured using a Brookfield viscometer (model: TVB10; manufactured by Toki Sangyo Co., Ltd.) at a sample temperature of 30°C and a rotation speed of 60 rpm. The rotor used for measurement is the M1 rotor (rotor No. 20) when the viscosity of the sample is less than 100 mPa·s, or the M2 rotor (rotor No. 21) when the viscosity is 100 mPa·s to 500 mPa·s. In the present invention, starch sodium octenyl succinate may be used alone or in any combination of two or more.

[0017] Examples of commercially available starch sodium octenylsuccinate include N-Creamer 46 (trade name; viscosity of 15% by mass aqueous solution: 130 mPa·s; manufactured by Ingredion), Purity Gum BE (trade name; viscosity of 15% by mass aqueous solution: 25 mPa·s; manufactured by Ingredion), Purity Gum 2000 (trade name; viscosity of 15% by mass aqueous solution: 17 mPa·s; manufactured by Ingredion), and Emulstar 500 (trade name; viscosity of 15% by mass aqueous solution: 28 mPa·s; manufactured by Matsutani Chemical Industry Co., Ltd.), and these can be used in the present invention.

[0018] The powdery emulsion composition of the present invention is prepared by drying an emulsion obtained by emulsifying an oil phase containing glycerin succinate fatty acid ester and the like with an aqueous phase containing starch sodium octenylsuccinate and the like, and then forming it into a powder. The powder form also includes granular forms. Regarding the particle size of the powdery emulsion composition of the present invention, in terms of powder quality and water dispersibility, the proportion of particles passing through a sieve with an opening of 701 μm (24 mesh) is preferably 70% by mass or more, more preferably 80% by mass or more. The water content of the powdery emulsion composition of the present invention is preferably 5% by mass or less, more preferably 3% by mass or less. The water content can be measured, for example, by a normal pressure heat drying method (drying at 105°C for 3 to 5 hours).

[0019] The powdery emulsion composition of the present invention contains a high content of glycerin succinic acid fatty acid ester as a main component. "High content of glycerin succinic acid fatty acid ester" means that the powdery emulsion composition of the present invention contains glycerin succinic acid fatty acid ester in an amount of 30 to 60% by mass, preferably 30 to 50% by mass. The amount of starch sodium octenylsuccinate contained in the powdery emulsion composition of the present invention is 2 to 70% by mass, preferably 5 to 50% by mass, and more preferably 5 to 30% by mass.

[0020] The powdery emulsion composition of the present invention may contain any component within the range that does not impair the effects of the present invention, such as fats and oils, powdered base materials, citrates, phosphates, antioxidants, colorants, emulsifiers other than glycerin succinic acid fatty acid esters, etc.

[0021] Examples of fats and oils include vegetable fats and oils, animal fats and oils, processed fats and oils, and medium-chain fatty acid triglycerides. Examples of vegetable fats and oils include soybean oil, rapeseed oil, cottonseed oil, safflower oil, sunflower oil, rice oil, corn oil, coconut oil, palm oil, palm kernel oil, peanut oil, olive oil, sesame oil, high oleic rapeseed oil, high oleic safflower oil, high oleic corn oil, and high oleic sunflower oil. Examples of animal fats and oils include lard, beef tallow, fish oil, milk fat, and butter. Examples of processed fats and oils include vegetable fats and oils and animal fats that have been subjected to fractionation, hydrogenation, interesterification, or the like, and include hardened fats and oils such as palm hardened fats, coconut hardened fats, soybean hardened fats, and rapeseed hardened fats, as well as fractionated fats and oils such as palm fractionated fats, coconut fractionated fats, soybean fractionated fats, and rapeseed fractionated fats. Examples of medium-chain fatty acid triglycerides include caproic acid triglyceride, caprylic acid triglyceride, capric acid triglyceride, and lauric acid triglyceride.

[0022] When the powdery emulsion composition of the present invention contains fats and oils, the amount of fats and oils is preferably 5 to 25 mass %, more preferably 5 to 15 mass %, and is preferably 15 to 30 mass parts, more preferably 20 to 25 mass parts, per 100 mass parts of the glycerin succinic acid fatty acid ester.

[0023] Examples of powdered base materials include starch, dextrin, sugars, sugar alcohols, stabilizers, proteins, etc. Examples of starch include potato starch, sweet potato starch, corn starch, wheat starch, rice starch, tapioca starch, etc., as well as processed starches (excluding starch sodium octenylsuccinate) obtained by subjecting these starches to acid treatment, alkali treatment, oxidation treatment, esterification treatment, etherification treatment, phosphorylation treatment, cross-linking treatment, heat treatment, gelatinization treatment, pulverization treatment, enzyme treatment, etc.

[0024] Examples of dextrin include maltodextrin, powdered sugar, branched dextrin, cyclic dextrin, and indigestible dextrin.

[0025] Examples of sugars include glucose, fructose, sucrose, granulated sugar, lactose, maltose, trehalose, palatinose, xylose, etc. Examples of sugar alcohols include sorbitol, maltitol, erythritol, xylitol, etc. Examples of stabilizers include agar, gelatin, pectin, carrageenan, curdlan, mannan, alginic acid, alginates, polysaccharides, soybean polysaccharides, cellulose, xanthan gum, locust bean gum, guar gum, tamarind gum, tara gum, tragacanth gum, gellan gum, gum arabic, etc.

[0026] Examples of proteins include milk proteins such as sodium caseinate, soy protein, pea protein, wheat protein, and rice protein. Examples of citrates include trisodium citrate. Examples of phosphates include sodium metaphosphate, sodium pyrophosphate, and sodium polyphosphate. Examples of antioxidants include tocopherol, L-ascorbic acid, L-ascorbate, L-ascorbic acid fatty acid esters, tea extract, bayberry extract, and rosemary extract. Examples of coloring agents include β-carotene, gardenia pigment, and safflower pigment.

[0027] When the powdered emulsion composition of the present invention contains a powdered base material, the powdered base material is preferably contained in an amount of 5 to 65 mass %, more preferably 7 to 60 mass %.

[0028] Examples of emulsifiers other than glycerin succinic acid esters include glycerin fatty acid esters such as glycerin monofatty acid esters, glycerin difatty acid esters, glycerin acetate fatty acid esters, glycerin lactate fatty acid esters, glycerin citrate fatty acid esters, glycerin diacetyltartaric acid fatty acid esters, polyglycerin fatty acid esters, and polyglycerin condensed ricinoleate esters; sorbitan fatty acid esters; sucrose fatty acid esters; propylene glycol fatty acid esters; polyoxyethylene sorbitan fatty acid esters; and lecithin.

[0029] The method for producing the powdery emulsion composition of the present invention includes the steps of obtaining an emulsion containing glycerin succinic acid fatty acid ester, starch sodium octenylsuccinate, and water, and drying the emulsion to form a powder.

[0030] The process for obtaining an emulsion containing glycerin succinate fatty acid ester, starch sodium octenylsuccinate, and water involves, for example, melting the glycerin succinate fatty acid ester at preferably 70 to 85°C to form an oil phase, and mixing starch sodium octenylsuccinate with water, preferably at 65 to 75°C, to form an aqueous phase. When melting the glycerin succinate fatty acid ester, it is preferable to mix it with oil-soluble components such as fats and oils, and emulsifiers other than the glycerin succinate fatty acid ester, and then melting. When dissolving starch sodium octenylsuccinate in water, it may be mixed with and dissolved in water-soluble components such as starch, dextrin, sugars, sugar alcohols, stabilizers, and proteins. Next, the oil phase is added while stirring the aqueous phase, and emulsified using an emulsifier or the like to obtain an emulsion. The emulsifier used may be a high-speed rotary disperser / emulsifier such as TK Homomixer (trade name, manufactured by Primix Corporation) or Clearmix (trade name, manufactured by M Technique Co., Ltd.). Stirring conditions include a rotation speed of preferably 3,000 to 10,000 rpm, more preferably 6,000 to 8,000 rpm, a stirring time of preferably 5 to 20 minutes, more preferably 5 to 10 minutes, and a stirring temperature of preferably 65 to 75°C. The emulsion obtained by stirring can also be further homogenized using a high-pressure homogenizer. The pressure during homogenization is preferably 15 to 25 MPa. The mass ratio of the oil phase to the aqueous phase (oil phase / aqueous phase) during emulsification is preferably 1 / 8 to 1 / 2, more preferably 1 / 6 to 1 / 4.

[0031] The content of glycerin succinic acid fatty acid ester contained in the emulsion thus obtained is preferably 10 to 30% by mass, more preferably 15 to 25% by mass. The content of starch sodium octenyl succinate contained in the emulsion is preferably 0.5 to 20% by mass, more preferably 3 to 15% by mass. The content of water contained in the emulsion is preferably 55 to 80% by mass, more preferably 60 to 70% by mass. The average particle size of the oil phase contained in the emulsion is preferably 15 μm or less, more preferably 10 μm or less, and even more preferably 5 μm or less, in terms of the emulsion stability of the emulsion, water dispersibility after powderization, and emulsion stability when dispersed in water. The average particle size can be calculated by measuring the particle size distribution on a volume basis using a wet particle size distribution analyzer (laser diffraction / scattering particle size distribution analyzer, model: LA-950; manufactured by Horiba, Ltd.) while the emulsion at 70°C is dispersed in ion-exchanged water at room temperature, and then calculating the average value.

[0032] The step of drying and powdering the emulsion can employ a method known per se, including, for example, a method of spray-drying the emulsion to powder, or a method of drying the emulsion by hot air drying, freeze-drying, vacuum drying, or the like, and then physically powdering it using compression crushing, shear crushing, impact crushing, or the like. Among these, the method of spray-drying the emulsion to powder is preferred. There are no particular limitations on the device used to spray-dry the emulsion, and an injection-type spray dryer, a rotating disk-type spray dryer, or the like can be used. As for the spray-drying conditions, for example, the emulsion is sprayed into an apparatus at 120 to 200°C.

[0033] The powdery emulsion composition of the present invention thus obtained has excellent water dispersibility and emulsion stability when dispersed in water, and has good powder quality. The average particle size of the oil phase contained in a dispersion obtained by dispersing the powdery emulsion composition of the present invention in water is preferably 25 μm or less, more preferably 10 μm or less, and even more preferably 5 μm or less. The average particle size can be calculated in the same way as the average particle size of the oil phase contained in the emulsion.

[0034] The powdery emulsion composition of the present invention contains a high content of glycerin succinic acid fatty acid ester as a main component, has excellent water dispersibility and emulsion stability when dispersed in water, and has good powder quality, allowing the glycerin succinic acid fatty acid ester to act more efficiently on food ingredients, thereby improving the quality of foods. There are no particular limitations on the applications, and the composition can be used in, for example, bread, confectionery, noodles, cooked rice, beverages, premixes, etc. Examples of bread include white bread, sweet bread, Danish pastry, pastry, croissant, brioche, French baguette, etc. Examples of confectionery include candy, gummies, chocolate, cookies, biscuits, cakes, pancakes, castella, Baumkuchen, donuts, snacks, rice crackers, ice cream, etc. Examples of noodles include Chinese noodles, udon, soba, somen, pasta, gyoza wrappers, spring roll wrappers, etc., including fresh noodles as well as cooked noodles such as boiled noodles, steamed noodles, instant noodles, refrigerated noodles, and frozen noodles. Examples of cooked rice include seasoned rice, pilaf, dry curry, risotto, fried rice, etc. Examples of beverages include black tea drinks, coffee drinks, milk drinks, lactic acid bacteria drinks, etc. Premixes refer to foods in which some of the ingredients are premixed, and examples thereof include bread premixes, cake premixes, pancake premixes, ice cream premixes, noodle premixes, and batter premixes.

[0035] The method of using the powdered emulsion composition of the present invention is not particularly limited, and examples thereof include adding the composition directly to the food production process, adding the composition in advance to other powdered ingredients, or adding the composition dispersed in water or the like. For example, in the case of foods made from wheat flour, such as bread, cake, and noodles, the powdered emulsion composition of the present invention is preferably added in an amount of 0.05 to 1.0 parts by mass of the glycerin succinic acid fatty acid ester contained in the powdered emulsion composition of the present invention per 100 parts by mass of wheat flour. Furthermore, in the case of beverages made from dairy ingredients, such as black tea, coffee, and milk beverages, the glycerin succinic acid fatty acid ester contained in the powdered emulsion composition of the present invention is preferably added in an amount of 0.005 to 0.3% by mass in the beverage.

[0036] The present invention will be specifically explained below with reference to examples, but the present invention is not limited to these examples. [Example]

[0037] [Preparation of emulsion] (1) Raw materials 1) Glycerin succinic acid fatty acid ester (trade name: Poem B-30; manufactured by Riken Vitamin Co., Ltd.) 2) Starch octenylsuccinate sodium A (trade name: N-Creamer 46; viscosity of 15% by weight aqueous solution: 130 mPa·s; manufactured by Ingredion) 3) Starch Sodium Octenylsuccinate B (trade name: Purity Gum BE; 15% by weight aqueous solution viscosity 25 mPa·s; manufactured by Ingredion) 4) Gum arabic (trade name: CleoGum #4810; manufactured by Willy Benecke GmbH) 5) Sodium caseinate (trade name: Emulac NA; manufactured by Meggle) 6) Hardened palm oil (product name: extremely hardened palm oil; manufactured by Yokoseki Oil & Fat Industries Co., Ltd.) 7) Dextrin (trade name: Pinedic #2; manufactured by Matsutani Chemical Industry Co., Ltd.) 8)Water

[0038] (2) Method for preparing emulsion Each ingredient (parts by weight (g)) listed for the aqueous phase in Table 1 was placed in a 1-L stainless steel beaker and stirred and dissolved at 70°C for 10 minutes to obtain an aqueous phase. Next, each ingredient (parts by weight (g)) listed for the oil phase in Table 1 was placed in a 100-mL beaker and stirred and dissolved at 85°C for 10 minutes to obtain an oil phase. The resulting aqueous phase was stirred at 6000 rpm using a TK Homomixer (trade name; manufactured by Primix Corporation) until the entire oil phase was added to the aqueous phase. The mixture was then emulsified at 8000 rpm for 10 minutes while maintaining the temperature at 70°C to obtain emulsions 1 to 6. Emulsions 7 to 9 gelled and separated, failing to emulsify.

[0039] (3) Measurement of the average particle size of the oil phase contained in the emulsion For each of emulsions 1 to 6, excluding emulsions 7 to 9 in which the emulsions gelled and separated, the emulsions at 70°C immediately after emulsification were dispersed in ion-exchanged water at room temperature, and the average particle size (μm) of the oil phase was measured using a wet particle size distribution analyzer (model: LA-950; manufactured by Horiba, Ltd.). The results are shown in Table 1.

[0040] [Table 1]

[0041] As shown in Table 1, when comparing emulsions 1 to 3 and 5, each containing 30 parts by mass of glycerin succinate fatty acid ester, emulsions 1 to 3, which contained starch sodium octenyl succinate in the aqueous phase, had a smaller average particle size of the oil phase than emulsion 5, which contained gum arabic in the aqueous phase, and the emulsion had better emulsion stability. When comparing emulsions 4 and 6, each containing 50 parts by mass of glycerin succinate fatty acid ester, emulsion 4, which contained starch sodium octenyl succinate in the aqueous phase, had a smaller average particle size of the oil phase than emulsion 6, which contained gum arabic in the aqueous phase, and the emulsion had better emulsion stability. Furthermore, emulsions 7 and 8, which contained sodium caseinate in the aqueous phase, and emulsion 9, which contained only dextrin in the aqueous phase, gelled and separated, making it impossible to produce emulsions.

[0042] [Preparation of powdered emulsion composition] (1) Method for preparing powdered emulsion composition (Examples 1 to 4, Comparative Examples 1 and 2) Using a spray dryer (model: L-8i; manufactured by Okawara Kakoki Co., Ltd.), the inlet temperature of the device was set to 180°C, and emulsions 1 to 6 were each spray-dried using a two-fluid nozzle to evaporate the water added during emulsion preparation, yielding powdered emulsion compositions A to F. The water contents (% by mass) of powdered emulsion compositions A to F were also measured. The mass % and water contents (% by mass) of each raw material added to powdered emulsion compositions A to F are shown in Table 2.

[0043] To confirm the particle size of powdered emulsion compositions A to F, each was passed through a sieve with an opening of 701 μm (24 mesh) and the proportion of particles that passed through was calculated. The proportions for powdered emulsion compositions A to F were 82 mass%, 88 mass%, 89 mass%, 86 mass%, 80 mass%, and 59 mass%, respectively.

[0044] (2) Evaluation of water dispersibility of powdered emulsion composition For each of powdery emulsion compositions A to F, 0.5 g of any of powdery emulsion compositions A to F was added to 200 g of water at room temperature and stirred for 1 minute to form a dispersion. The water dispersibility of the resulting dispersion was evaluated visually and symbolized based on the following evaluation criteria. "◎" and "◯" were deemed to satisfy the effects of the present invention. The results are shown in Table 3. <Evaluation criteria> ◎: No residue is found and the product is very compatible with water. ○: Almost no residue is found, and it blends well with water. △: Some residue is visible and poor compatibility with water ×: A large amount of undissolved material is observed, and the product is not very compatible with water.

[0045] (3) Evaluation of emulsion stability when powdered emulsion composition is dispersed in water For each of the dispersions of powdery emulsion compositions A to F obtained in the evaluation of the water dispersibility of the powdery emulsion compositions, the average particle size (μm) of the oil phase was measured using a wet particle size distribution analyzer (model: LA-950; manufactured by Horiba, Ltd.) in a state where the dispersion at room temperature was dispersed in ion-exchanged water at room temperature. The results are shown in Table 3.

[0046] (4) Evaluation of powder quality of powdered emulsion composition For each of the powdery emulsion compositions A to F, the powder quality was visually evaluated and coded based on the following criteria. "◎" and "◯" were deemed to satisfy the effects of the present invention. The results are shown in Table 3. <Evaluation criteria> ◎: High fluidity, light and smooth powder ○: Fluid, smooth powder △: Slightly low fluidity and rough powder texture ×: Poor fluidity and very rough powder

[0047] [Table 2]

[0048] [Table 3]

[0049] As shown in Table 3, powdery emulsion compositions A to D containing starch sodium octenylsuccinate had good water dispersibility and powder quality. On the other hand, powdery emulsion compositions E and F containing gum arabic had poor water dispersibility and powder quality. Furthermore, when comparing powdery emulsion compositions A to C and E containing 30% by mass of glycerin succinic acid fatty acid ester, powdery emulsion compositions A to C containing starch sodium octenylsuccinate had smaller average particle sizes when dispersed in water than powdery emulsion composition E containing gum arabic, and had better emulsion stability when dispersed in water. Comparing powdered emulsion compositions D and F, each containing 50% by mass of glycerin succinic acid fatty acid ester, powdered emulsion composition D, which contained starch sodium octenylsuccinate, had a smaller average particle size when dispersed in water than powdered emulsion composition F, which contained gum arabic, and exhibited better emulsion stability when dispersed in water.

Claims

1. A powdery emulsion composition containing 30 to 60% by mass of glycerin succinic acid fatty acid ester, 5 to 50% by mass of starch sodium octenylsuccinate, and 5 to 25% by mass of fats and oils.

2. 2. A method for producing the powdery emulsion composition according to claim 1, comprising the steps of: emulsifying an oil phase containing a glycerin succinic acid fatty acid ester and an oil and fat with an aqueous phase containing starch sodium octenylsuccinate and water to obtain an emulsion; and drying the emulsion to form a powder.

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