阅读说明：本技术 乳浊剂及其制备方法和应用 (Opacifier and preparation method and application thereof ) 是由 韦仕静 李靖娥 朱晖 林喆 于 2020-07-30 设计创作，主要内容包括：本发明涉及一种乳浊剂及其制备方法和应用。以质量份数计,制备该乳浊剂的原料包括：20份～30份的食用油、40份～50份的辛葵酸甘油酯、5份～10份的奶香基料、40份～70份的增重剂、5份～10份的油性乳化剂、110份～150份的水性乳化剂、100份～200份的助乳剂和490份～650份的水,奶香基料由保藏号为GDMCC NO:60815的凝结芽孢杆菌在含有酶解物的培养基中发酵培养后经纯化得到,其中,酶解物为无水奶油、稀奶油及黄油中的至少一种经脂肪酶酶解得到。上述乳浊剂应用于饮料时具有轻芝士的香气及口感,且能提高饮料浊度的稳定性。(The invention relates to an opacifier and a preparation method and application thereof. The opacifier is prepared from the following raw materials in parts by mass: 20-30 parts of edible oil, 40-50 parts of caprylic capric glyceride, 5-10 parts of milk flavor base material, 40-70 parts of weighting agent, 5-10 parts of oily emulsifier, 110-150 parts of aqueous emulsifier, 100-200 parts of co-emulsion and 490-650 parts of water, wherein the milk flavor base material is obtained by fermenting and culturing bacillus coagulans with the deposition number of GDMCC NO:60815 in a culture medium containing zymolyte and then purifying, and the zymolyte is obtained by carrying out enzymolysis on at least one of anhydrous cream, cream and butter by using lipase. The opacifier has fragrance and taste of light cheese when applied to beverage, and can improve turbidity stability of beverage.)

1. The opacifier is characterized by comprising the following raw materials in parts by weight: 20-30 parts of edible oil, 40-50 parts of caprylic capric glyceride, 5-10 parts of milk flavor base material, 40-70 parts of weighting agent, 5-10 parts of oily emulsifier, 110-150 parts of aqueous emulsifier, 100-200 parts of co-emulsion and 490-650 parts of water, wherein the milk flavor base material is obtained by fermenting and culturing bacillus coagulans with the deposition number of GDMCC NO:60815 in a culture medium containing zymolyte and then purifying, and the zymolyte is obtained by carrying out enzymolysis on at least one of anhydrous cream, cream and butter by using lipase.

2. The opacifying agent of claim 1 wherein said edible oil is selected from at least one of palm oil, sunflower oil, soybean oil and corn oil.

3. The opacifying agent of claim 1 wherein said weighting agent is selected from at least one of sucrose acetate isobutyrate, glycerol rosin ester and glycerol hydrogenated rosin ester.

4. The opacifier according to claim 1 wherein said oily emulsifier is selected from at least one of acetylated monoglyceride, soybean lecithin, polyglycerin fatty acid ester and sucrose ester;

and/or the aqueous emulsifier is at least one selected from citric acid monoglyceride, modified starch, propylene glycol alginate and sodium caseinate;

and/or the auxiliary emulsion is at least one of propylene glycol, glycerol and a sorbitol aqueous solution with the mass percentage of 70%.

5. The opacifier according to claim 1, wherein the raw materials for preparing the opacifier further comprise 2 to 5 parts by mass of a preservative.

6. The opacifier according to any one of claims 1 to 5, wherein the water phase in the opacifier is 82 to 89 mass%.

7. The opacifier according to claim 1, wherein the raw materials for preparing the opacifier comprise, in parts by mass: 20 to 30 parts of palm oil, 40 to 50 parts of caprylic capric glyceride, 5 to 10 parts of milk flavor base material, 40 to 70 parts of sucrose acetate isobutyrate, 5 to 10 parts of acetylated monoglyceride, 50 to 70 parts of citric monoglyceride, 60 to 80 parts of modified starch, 100 to 200 parts of sorbitol aqueous solution with the mass percentage of 70 percent and 490 to 650 parts of water.

8. The opacifier according to claim 1, wherein the raw materials for preparing the opacifier comprise, in parts by mass: 20 to 25 parts of palm oil, 40 to 50 parts of caprylic capric glyceride, 8 to 10 parts of milk flavor base material, 55 to 70 parts of sucrose acetate isobutyrate, 7 to 10 parts of acetylated monoglyceride, 60 to 70 parts of citric monoglyceride, 60 to 70 parts of modified starch, 150 to 200 parts of sorbitol aqueous solution with the mass percentage of 70 percent and 490 to 600 parts of water.

9. The preparation method of the opacifier is characterized by comprising the following steps:

mixing 20-30 parts of edible oil, 40-50 parts of caprylic capric glyceride and 5-10 parts of milk flavor base material, heating to melt, adding 40-70 parts of weighting agent and 5-10 parts of oily emulsifier, mixing, and heating to melt to prepare a first mixture;

mixing 110 to 150 parts of aqueous emulsifier, 490 to 650 parts of water and 100 to 200 parts of co-emulsion to prepare a second mixture; and

and mixing the first mixture and the second mixture, and emulsifying to prepare the opacifier.

10. Use of the opacifying agent of any one of claims 1 to 8 or of the opacifying agent of claim 9 in the preparation of a food product.

Technical Field

The invention relates to the technical field of food, in particular to an opacifier and a preparation method and application thereof.

Background

With the development of global economy, consumer demands for beverage flavor, state and nutritional value are gradually increased, and beverage types are gradually changed from transparent clear beverages to turbid juice beverages.

At present, various turbid beverages are in endless in the market, and especially some fruit juices containing fruit pulp are deeply popular with consumers because of the fruit pulp particles. Cloudy beverages give the consumer the impression that the product is natural, rich in contents, or has contents. Therefore, opacifiers are often added to beverages to enhance visual appeal, impart a good cloudy feel to the beverage, and impart a natural feel and richness to the beverage. In addition, in the fruit juice beverage, the opacifier is added to improve the turbidity of the beverage, so that the dosage of the fruit juice can be reduced, and the cost of the beverage can be reduced.

However, currently, opacifiers are of a single type, often have unpleasant odors that are difficult to mask, and are prone to produce off-flavors in beverages, thereby affecting overall mouthfeel.

Disclosure of Invention

Accordingly, there is a need for an opacifier which can improve the mouthfeel of beverages and has high stability.

An opacifier is prepared from the following raw materials in parts by weight: 20-30 parts of edible oil, 40-50 parts of caprylic capric glyceride, 5-10 parts of milk flavor base material, 40-70 parts of weighting agent, 55-80 parts of emulsifier, 60-80 parts of thickener and 100-200 parts of co-emulsion, wherein the milk flavor base material is obtained by fermenting and culturing bacillus coagulans with the deposition number of GDMCCNO:60815 in a culture medium containing zymolyte and then purifying, and the zymolyte is obtained by carrying out enzymolysis on at least one of anhydrous cream, cream and butter by using lipase.

The milk flavor base material is obtained by purifying the bacillus coagulans with the deposition number of GDMCC NO:60815 after fermentation culture in a culture medium containing zymolyte, compared with the traditional opacifier, the milk flavor base material in the opacifier can improve the relationship among edible oil, caprylic acid glyceride, milk flavor base material, weighting agent, emulsifier, thickener and co-emulsion, so that the opacifier has the fragrance and mouthfeel of light cheese when being applied to beverages, and can improve the turbidity stability of the beverages.

In one embodiment, the edible oil is selected from at least one of palm oil, sunflower oil, soybean oil and corn oil.

In one embodiment, the weighting agent is selected from at least one of sucrose acetate isobutyrate, glycerol rosin ester, and glycerol hydrogenated rosin ester.

In one embodiment, the oily emulsifier is selected from at least one of acetylated monoglyceride, soybean lecithin, polyglycerin fatty acid ester and sucrose ester.

In one embodiment, the aqueous emulsifier is at least one selected from the group consisting of monoglycerides of citric acid, modified starch, propylene glycol alginate, and sodium caseinate.

In one embodiment, the auxiliary emulsion is at least one selected from propylene glycol, glycerin and sorbitol aqueous solution with the mass percentage of 70%.

In one embodiment, the raw materials for preparing the opacifier further comprise 2-5 parts by mass of a preservative.

In one embodiment, the water phase in the opacifier is 82-89% by mass.

In one embodiment, the raw materials for preparing the opacifier comprise, by mass: 20 to 30 parts of palm oil, 40 to 50 parts of caprylic capric glyceride, 5 to 10 parts of milk flavor base material, 40 to 70 parts of sucrose acetate isobutyrate, 5 to 10 parts of acetylated monoglyceride, 50 to 70 parts of citric monoglyceride, 60 to 80 parts of modified starch, 100 to 200 parts of sorbitol aqueous solution with the mass percentage of 70 percent and 490 to 650 parts of water.

In one embodiment, the raw materials for preparing the opacifier comprise, by mass: 20 to 25 parts of palm oil, 40 to 50 parts of caprylic capric glyceride, 8 to 10 parts of milk flavor base material, 55 to 70 parts of sucrose acetate isobutyrate, 7 to 10 parts of acetylated monoglyceride, 60 to 70 parts of citric monoglyceride, 60 to 70 parts of modified starch, 150 to 200 parts of sorbitol aqueous solution with the mass percentage of 70 percent and 490 to 600 parts of water.

A preparation method of an opacifier comprises the following steps:

mixing 20-30 parts of edible oil, 40-50 parts of caprylic capric glyceride and 5-10 parts of milk flavor base material, heating to melt, adding 40-70 parts of weighting agent and 5-10 parts of oily emulsifier, mixing, and heating to melt to prepare a first mixture;

mixing 110 to 150 parts of aqueous emulsifier, 490 to 650 parts of water and 100 to 200 parts of co-emulsion to prepare a second mixture; and

and mixing the first mixture and the second mixture, and emulsifying to prepare the opacifier.

The use of the opacifying agent or the opacifying agent made by the method of making the opacifying agent in the preparation of food.

Detailed Description

In order that the invention may be more fully understood, reference will now be made to the following description. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

One embodiment of the present invention provides an opacifier which not only increases the turbidity stability of food, but also brings the aroma and taste of light cheese. Specifically, the raw materials for preparing the opacifier comprise the following components in parts by mass: 20 to 30 portions of edible oil, 40 to 50 portions of caprylic capric glyceride, 5 to 10 portions of milk flavor base material, 40 to 70 portions of weighting agent, 5 to 10 portions of oily emulsifier, 110 to 150 portions of aqueous emulsifier, 100 to 200 portions of co-emulsion and 490 to 650 portions of water.

Opacifiers are relatively stable oil-in-water systems formed by dispersing oil in an aqueous phase in the form of droplets. The edible oil is used as one of the oil phase components of the opacifier. Specifically, the edible oil is at least one selected from palm oil, sunflower oil, soybean oil and corn oil. In an alternative specific example, the edible oil is palm oil. Palm oil contains balanced saturated and unsaturated fatty acid esters (50% saturated fatty acids, 40% monounsaturated fatty acids and 10% polyunsaturated fatty acids), has a digestion and absorption rate of over 97% by humans, and, like all other vegetable edible oils, does not contain cholesterol itself. Of course, in other embodiments, the edible oil is not limited to the above, and may be other common edible oils.

In an alternative specific example, the edible oil is 20 parts, 22 parts, 25 parts or 30 parts by mass. Furthermore, the edible oil is 20 to 25 parts by weight.

The caprylic capric glyceride is used as one of the oil phase components of the opacifier. In an alternative specific example, the mass part of the caprylic capric glyceride is 40 parts, 44 parts, 48 parts or 50 parts. Furthermore, the weight portion of the caprylic capric acid glyceride is 45 to 50.

The milk essence base material is used as one of oil phase components in the opacifier and is matched with other components in the opacifier, so that the product containing the opacifier has the fragrance of light cheese and pleasant mouthfeel, the stability of the opacifying effect of the opacifier can be improved, and the turbidity of the product containing the opacifier is stable. In the embodiment, the milk flavor base material is obtained by fermenting bacillus coagulans with the deposition number of GDMCC NO:60815 in a culture medium containing zymolyte, wherein the zymolyte is obtained by the enzymolysis of at least one of anhydrous cream, cream and butter through lipase. Specifically, the preparation method of the milk-flavored base material comprises the steps of S110 to S120. Specifically, the method comprises the following steps:

step S110: and (3) preparing zymolyte. Specifically, at least one of anhydrous cream, cream and butter is mixed with water to obtain a mixture; and then adding lipase into the mixture for enzymolysis reaction to prepare zymolyte. Lipase enzymolyzes anhydrous cream, cream and butter to produce short-chain fatty acid with special oil smell. Wherein the moisture of the anhydrous butter is less than or equal to 0.1 percent. The ratio of the mass of the oil layer in the mixture to the mass of water in the mixture is 1:1 to 5. The mixture is a sterile mixture. The aseptic mixture can be obtained by sterilizing at least one of anhydrous cream, cream and butter and water, respectively, and mixing at least one of sterilized anhydrous cream, cream and butter with water under aseptic condition; at least one of anhydrous butter, cream and butter may be mixed with water and then subjected to sterilization treatment. Further, the sterilization conditions were: 90-120 ℃ for 10-30 min.

In an alternative specific example, the temperature of the enzymolysis reaction is 25 ℃ to 50 ℃; the enzymolysis time is 0.5-4 days. The addition amount of the lipase is 0.01-0.5% of the mass of water in the mixture. Further, the temperature of the enzymolysis reaction is 35-45 ℃; the enzymolysis time is 1 d-3 d. The addition amount of the lipase is 0.01-0.1 percent of the mass of the water. The lipase is at least one selected from the group consisting OF lipase OF-360, lipase AY and lipase DF. Further, the lipase is a lipase OF-360. When the lipase is the lipase OF-360, the enzymolysis is complete, and the fragrance after fermentation is coordinated.

Of course, in some embodiments, the enzymatic reaction is performed after adding the lipase to the mixture, and after the enzymatic reaction is completed, the step of removing the aqueous layer is further included. It will be appreciated that in some embodiments, the enzymatic reaction is carried out under shaking conditions to accelerate the reaction. Furthermore, the oscillation speed is 100 r/min-180 r/min. Of course, after the enzymolysis reaction is finished, a step of inactivating the lipase is also included. The lipase is inactivated to control the degree of enzymatic hydrolysis.

Step S120: the Bacillus coagulans with the deposition number of GDMCC NO:60815 is inoculated into the culture medium containing the zymolyte prepared in the step S110 for fermentation culture to prepare the milk flavor base material.

Specifically, after the zymolyte prepared in step S110 is mixed with a culture medium, the bacillus coagulans is inoculated to the culture medium added with the zymolyte and is subjected to fermentation culture to obtain a fermentation product; then, crushing the fermentation product to obtain a crude product containing an oil layer; subsequently, the non-oil layer in the crude product was removed to prepare a milk-flavored base.

In one embodiment, the concentration of Bacillus coagulans in the Bacillus coagulans solution at the time of inoculation is 10⁷cfu/mL～10⁸cfu/mL. The inoculation amount of the bacillus coagulans is 0.1-5%. Furthermore, the inoculation amount of the bacillus coagulans is 1-5%. Inoculating according to the inoculation amount, so that the initial concentration of the bacillus coagulans in the reactant can reach 10⁵cfu/mL～10⁶cfu/mL. The inoculation amount herein refers to the ratio of the volume of the bacillus coagulans liquid to the volume of the culture medium at the time of inoculation.

In one embodiment, the addition amount of the zymolyte is 20-50% of the mass of the culture medium. Furthermore, the addition amount of the zymolyte is 30-50% of the culture medium.

In one embodiment, the culture medium further comprises a milk source and a sugar source. Specifically, the milk source is selected from at least one of milk and powdered milk. The milk is full-fat milk or skim milk; the milk powder is whole milk powder or skimmed milk powder. The mass of the milk source is 1-20% of the mass of water in the culture medium. Further, the milk source is skimmed milk powder; the mass of the milk source is 5-15% of the mass of water in the culture medium.

Specifically, the sugar source is at least one selected from glucose, whey powder, white sugar and lactose. The mass of the sugar source is 1-15% of the mass of water in the culture medium. Further on. The sugar source is glucose; the mass of the sugar source is 3-15% of the mass of water in the culture medium.

In one embodiment, the mass ratio of the sugar source to the milk source is 1: 1-10. Furthermore, the mass ratio of the sugar source to the milk source is 1: 1-5. The carbon-nitrogen ratio in the culture medium is ensured by the arrangement of the sugar source and the milk source, and the growth of the bacillus coagulans is facilitated.

Specifically, the temperature of fermentation culture is 30-50 ℃; the fermentation time is 1-5 days. Further, the temperature of fermentation culture is 35-45 ℃; the fermentation time is 1 d-3 d. Further, the fermentation culture was performed under shaking conditions. The culture medium and zymolyte are subjected to full contact reaction through shaking culture, so as to promote the formation of new fragrant substances.

Specifically, in the step of crushing the fermentation product to obtain a crude product containing an oil layer, the crushing treatment is ultrasonic homogeneous crushing. The zymolyte is fermented by the bacillus coagulans, and after a period of fermentation, the somatic cells are broken, so that the intracellular enzyme of the bacillus coagulans is dissolved out and further reacts with the fermentation product. Furthermore, the ultrasonic frequency is 20 KHz-25 KHz, and the homogenizing rotating speed is 5000 r/min-8000 r/min; the crushing time is 5-20 min.

Specifically, in the step of removing the non-oil layer in the crude product to prepare the milk base, the non-oil layer is removed in such a manner that: sterilizing, and centrifuging to remove precipitate.

In an alternative specific example, the milk-flavored base is 5 parts, 6 parts, 8 parts, 9 parts, or 10 parts by mass. Furthermore, the milk flavor base material is 8-10 parts by mass.

Weighting agents are used to adjust the density of the oil phase. Specifically, the weighting agent is selected from at least one of sucrose acetate isobutyrate, rosin glycerin ester and hydrogenated rosin glycerin ester. In an alternative specific example, the weighting agent is sucrose acetate isobutyrate. Of course, in other embodiments, the weighting agent is not limited to the above, and may be other materials that are long enough to be food weighting agents.

In an alternative specific example, the weight increasing agent is 40 parts, 45 parts, 50 parts, 55 parts, 66 parts, or 70 parts by mass. Furthermore, the weight increasing agent is 55 to 70 parts by weight.

The oily emulsifier is used to emulsify the oil phase and water in the emulsifier to form a stable emulsion. Specifically, the oily emulsifier is at least one selected from acetylated monoglyceride, soybean lecithin, polyglycerin fatty acid ester and sucrose ester. In an alternative specific example, the oily emulsifier is one selected from acetylated monoglyceride, soybean lecithin, citric acid monoglyceride, polyglycerin fatty acid ester and sucrose ester. Of course, in other embodiments, the emulsifier is not limited to the above, but may be other commonly used food emulsifiers. In an alternative specific example, the mass part of the oily emulsifier is 5 parts, 6 parts, 7 parts, 8 parts, 9 parts or 10 parts.

The aqueous emulsifier is used to emulsify the oil phase and water in the emulsifier to form a stable emulsion. Specifically, the aqueous emulsifier is at least one selected from citric acid monoglyceride, modified starch, propylene glycol alginate and sodium caseinate. Citric acid monoglyceride, also known as citric acid fatty acid glyceride, is a nonionic food emulsifier, which is the product of the esterification of glycerol with fatty acids and citric acid. In an alternative embodiment, the aqueous emulsifier is selected from one of citric acid monoglyceride, modified starch, propylene glycol alginate, and sodium caseinate. In another alternative embodiment, the aqueous emulsifier is a mixture of citric acid monoglyceride and modified starch. Further, the mass ratio of the citric acid monoglyceride to the modified starch is (50-70): (60-80). Of course, in other embodiments, the aqueous emulsifier is not limited to the above, but may be other food-compatible aqueous emulsifiers commonly used in the art.

In an alternative specific example, the aqueous emulsifier is 110 parts, 120 parts, 130 parts, 135 parts, 145 parts or 150 parts by mass.

The auxiliary emulsion is used for assisting emulsification. Specifically, the auxiliary emulsion is at least one selected from propylene glycol, glycerol and sorbitol aqueous solution with the mass percentage of 70%. In an alternative embodiment, the co-emulsion is selected from a 70% by weight aqueous solution of sorbitol. Of course, in other embodiments, the co-emulsifier is not limited to the above, but may be other food co-emulsifiers commonly used in the art.

In an alternative specific example, the co-emulsion is present in 100, 120, 140, 150, 170, 180, or 200 parts by weight. Furthermore, the auxiliary emulsion is 150 to 200 parts by mass.

In one embodiment, the water phase in the opacifier accounts for 82-89% by mass. Further, the mass percentage of the water phase in the opacifier is 82-88%. The emulsifier is composed of an oil phase and an aqueous phase, and the aqueous phase of the emulsifier refers to a system composed of all water-soluble substances in the emulsifier.

In one embodiment, the raw materials for preparing the opacifier comprise, by mass: 20 to 30 parts of palm oil, 40 to 50 parts of caprylic capric glyceride, 5 to 10 parts of milk flavor base material, 40 to 70 parts of sucrose acetate isobutyrate, 5 to 10 parts of acetylated monoglyceride, 50 to 70 parts of citric monoglyceride, 60 to 80 parts of modified starch, 100 to 200 parts of sorbitol aqueous solution with the mass percentage of 70 percent and 490 to 650 parts of water.

In one embodiment, 1000 parts of opacifier is prepared from the following raw materials in parts by mass: 20 to 30 parts of palm oil, 40 to 50 parts of caprylic capric glyceride, 5 to 10 parts of milk flavor base material, 40 to 70 parts of sucrose acetate isobutyrate, 5 to 10 parts of acetylated monoglyceride, 50 to 70 parts of citric monoglyceride, 60 to 80 parts of modified starch, 100 to 200 parts of sorbitol aqueous solution with the mass percentage of 70 percent, and the balance of water.

In one embodiment, the raw materials for preparing the opacifier comprise, by mass: 20 to 25 parts of palm oil, 40 to 50 parts of caprylic capric glyceride, 8 to 10 parts of milk flavor base material, 55 to 70 parts of sucrose acetate isobutyrate, 7 to 10 parts of acetylated monoglyceride, 60 to 70 parts of citric monoglyceride, 60 to 70 parts of modified starch, 150 to 200 parts of sorbitol aqueous solution with the mass percentage of 70 percent and 490 to 600 parts of water.

In one embodiment, 1000 parts of opacifier is prepared from the following raw materials in parts by mass: 20 to 25 parts of palm oil, 40 to 50 parts of caprylic capric glyceride, 8 to 10 parts of milk flavor base material, 55 to 70 parts of sucrose acetate isobutyrate, 7 to 10 parts of acetylated monoglyceride, 60 to 70 parts of citric monoglyceride, 60 to 70 parts of modified starch, 150 to 200 parts of sorbitol aqueous solution with the mass percentage of 70 percent, and the balance of water.

In one embodiment, the raw materials for preparing the opacifier further comprise 2 to 5 parts of a preservative. Specifically, the preservative is selected from at least one of sodium dehydroacetate and sodium benzoate. In an alternative embodiment, the preservative is sodium dehydroacetate. Of course, it is to be understood that in other embodiments, the preservative is not limited to the above, but may be other food preservatives commonly used in the art.

In an alternative specific example, the preservative is present in an amount of 2 parts, 2.5 parts, 3 parts, 4 parts, or 5 parts by weight. Furthermore, the preservative is 2 to 3 parts by mass.

In one embodiment, the raw materials for preparing the opacifier comprise, by mass: 20 to 30 parts of palm oil, 40 to 50 parts of caprylic capric glyceride, 5 to 10 parts of milk flavor base material, 40 to 70 parts of sucrose acetate isobutyrate, 5 to 10 parts of acetylated monoglyceride, 50 to 70 parts of citric monoglyceride, 60 to 80 parts of modified starch, 100 to 200 parts of sorbitol aqueous solution with the mass percentage of 70 percent, 2 to 5 parts of sodium dehydroacetate and 490 to 650 parts of water.

In one embodiment, the raw materials for preparing the opacifier comprise, by mass: 20-25 parts of palm oil, 40-50 parts of caprylic capric glyceride, 8-10 parts of milk flavor base material, 55-70 parts of sucrose acetate isobutyrate, 7-10 parts of acetylated monoglyceride, 60-70 parts of citric monoglyceride, 60-70 parts of modified starch, 150-200 parts of sorbitol aqueous solution with the mass percentage of 70%, 2-3 parts of sodium dehydroacetate and 490-600 parts of water.

An embodiment of the present invention further provides a method for preparing an opacifier, including steps S210 to S230:

step S210: a first mixture is prepared.

Specifically, 20-30 parts of edible oil, 40-50 parts of caprylic capric glyceride and 5-10 parts of milk flavor base material are mixed and heated to be molten, then 40-70 parts of weighting agent and 5-10 parts of oily emulsifier are added and mixed, and the mixture is heated to be molten to prepare a first mixture. The edible oil, the milk-flavored base, the weighting agent and the oily emulsifier are as described above and will not be described in detail herein.

Further, the temperature for melting the edible oil, the caprylic capric glyceride and the milk flavor base material is 50-60 ℃. The temperature for melting the weighting agent and the emulsifier is 50-60 ℃.

In an alternative embodiment, a first mixture is prepared by mixing 20 to 30 parts of edible oil, 40 to 50 parts of glyceryl caprylate and 5 to 10 parts of milk flavor base, heating to melt, adding 40 to 70 parts of weighting agent and 5 to 10 parts of acetylated monoglyceride, mixing, and heating to melt.

In some embodiments, the weighting agent and the emulsifier are added to the mixture of the milk base, the edible oil, and the caprylic capric acid glyceride in portions to mix more uniformly.

Step S220: a second mixture is prepared.

Specifically, 110 to 150 parts of an aqueous emulsifier, 100 to 200 parts of a co-emulsion, and 490 to 650 parts of water are mixed to prepare a second mixture. The aqueous emulsifiers and co-emulsions are described above and will not be described in further detail herein.

In an alternative specific example, 490 to 650 parts of water, 50 to 70 parts of citric acid monoglyceride, 60 to 80 parts of modified starch and 100 to 200 parts of sorbitol aqueous solution with the mass percentage content of 70% are mixed and stirred at 50 to 60 ℃ until being dissolved to prepare a second mixture. Of course, if the materials from which the opacifying agent is made also include a preservative, then the preservative is added to the second mixture.

Step S230: and (4) emulsifying.

Specifically, the first mixture prepared in step S210 is mixed and emulsified with the second mixture prepared in step S220. Further, slowly adding the first mixture into the second mixture under the shearing conditions of 40-70 ℃ and 3000-7000 r/min, maintaining the temperature, shearing for 30-60 min under the conditions of 4000-10000 r/min, and then cooling to prepare the opacifier.

The preparation method of the opacifier is simple and convenient, and is suitable for industrial production.

The invention also provides an application of the opacifier in preparing food.

In particular to the application of the opacifier in preparing beverages or yoghourt, such as turbid beverages.

An embodiment of the present invention also provides a beverage comprising water and the above-described opacifier.

The beverage comprises the opacifier and has the corresponding advantages of the opacifier.

The invention also provides yoghourt which comprises the opacifier.

The yoghourt comprises the opacifier and has the advantages corresponding to the opacifier.