CN112868771A - Aerated apple vinegar flavored tea yogurt and preparation method thereof - Google Patents

Aerated apple vinegar flavored tea yogurt and preparation method thereof Download PDF

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Publication number
CN112868771A
CN112868771A CN201911199506.9A CN201911199506A CN112868771A CN 112868771 A CN112868771 A CN 112868771A CN 201911199506 A CN201911199506 A CN 201911199506A CN 112868771 A CN112868771 A CN 112868771A
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tea
vinegar
milk
aerated
yogurt
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Inventor
李江雪
付永刚
孙君
刘华
刘亚鹏
巴根纳
樊启程
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Inner Mongolia Yili Industrial Group Co Ltd
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Inner Mongolia Yili Industrial Group Co Ltd
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    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23CDAIRY PRODUCTS, e.g. MILK, BUTTER OR CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF
    • A23C9/00Milk preparations; Milk powder or milk powder preparations
    • A23C9/12Fermented milk preparations; Treatment using microorganisms or enzymes
    • A23C9/13Fermented milk preparations; Treatment using microorganisms or enzymes using additives
    • A23C9/1307Milk products or derivatives; Fruit or vegetable juices; Sugars, sugar alcohols, sweeteners; Oligosaccharides; Organic acids or salts thereof or acidifying agents; Flavours, dyes or pigments; Inert or aerosol gases; Carbonation methods
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23CDAIRY PRODUCTS, e.g. MILK, BUTTER OR CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF
    • A23C9/00Milk preparations; Milk powder or milk powder preparations
    • A23C9/12Fermented milk preparations; Treatment using microorganisms or enzymes
    • A23C9/13Fermented milk preparations; Treatment using microorganisms or enzymes using additives
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23VINDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
    • A23V2400/00Lactic or propionic acid bacteria
    • A23V2400/11Lactobacillus
    • A23V2400/123Bulgaricus
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23VINDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
    • A23V2400/00Lactic or propionic acid bacteria
    • A23V2400/21Streptococcus, lactococcus
    • A23V2400/249Thermophilus

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  • Microbiology (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Tea And Coffee (AREA)
  • Dairy Products (AREA)

Abstract

The invention provides aerated tea yogurt, which comprises a fermented product of tea cold-extraction extracted tea soup, a milk fermented product and edible raw vinegar (preferably apple vinegar), wherein carbon dioxide gas is filled in the tea yogurt; wherein the mass fraction of the milk protein is more than 10 per thousand, and the mass fraction of the carbon dioxide gas is 2-8 per thousand. The invention also provides a preparation method of the aerated tea yogurt. The aerated tea yogurt has the composite taste of the fermented milk, the fermented tea and the apple raw vinegar and the carbon dioxide bubble feeling, and provides a new health choice for consumers.

Description

Aerated apple vinegar flavored tea yogurt and preparation method thereof
Technical Field
The invention relates to the field of dairy and tea beverage processing, and particularly provides aerated tea yogurt which has the composite taste of fermented milk, fermented tea and food vinegar and the feeling of carbon dioxide bubbles.
Background
The fermented tea has tea polyphenols and caffeine, can reduce cholesterol and blood pressure, improve immunity and bactericidal power, and has weight reducing effect. The functional performance of the health care product is obvious, particularly the improvement function of the gastrointestinal tract, and the health care product meets the requirements of greasiness relieving, health and slimming of modern people. The apple raw vinegar is rich in organic acid and vitamins, and has effects of preventing common cold, promoting health, caring skin, relieving fatigue, and promoting digestion. The taste of the acetic acid is deep and loved by young consumers, and the combination of the fermented acid taste of the fermented tea and the added dazzling acetic acid taste of the edible vinegar can provide a new health choice for the consumers. The addition of carbon dioxide gas can bring about bubble mouthfeel, and the product is endowed with a refreshing and delicious experience. However, the product belongs to milk-containing beverage, the protein content is higher (more than or equal to 1.0 percent), and the stability of milk protein is easily influenced by carbon dioxide gas, so the milk-containing beverage with long shelf life and without carbon dioxide gas filling is on the market. The invention aims to develop a novel double-fermentation type milk-containing beverage containing tea, milk and gas by matching apple raw vinegar, novel fermented tea and traditional fermented milk with one another through the design of a product formula and a process, compounding the slightly sour flavor of the fermented tea mainly fermented by lactobacillus plantarum with the acetic acid feeling of edible vinegar, combining the aroma and smoothness of the fermented milk, adding carbon dioxide gas, and constructing a proper stable system.
Disclosure of Invention
An object of the present invention is to provide aerated tea yogurt comprising a fermented product of cold-extraction of tea leaves with a tea soup, a milk fermented product, and edible raw vinegar (such as rice vinegar, smoked vinegar, sugar vinegar, white vinegar, mature vinegar, grape vinegar, malt vinegar, apple vinegar), and the tea yogurt is filled with carbon dioxide gas; wherein the mass fraction of the milk protein is more than 10 per thousand and the mass fraction of the carbon dioxide gas is 2-8 per thousand based on the total weight of the final product.
In a specific embodiment of the invention, the edible raw vinegar is 5-80 per mill by mass and the soluble solid in the tea cold extraction tea soup is 1-6 per mill by mass based on the total weight of the final product.
In a specific embodiment of the invention, the aerated tea yogurt further comprises pectin and soybean polysaccharide, wherein the mass fraction of the pectin is 1-3 per mill, and the mass fraction of the soybean polysaccharide is 2-6 per mill;
preferably, the addition amount of the soybean polysaccharide is 2.0 to 2.5 times of the addition amount of the pectin.
In a specific embodiment of the invention, the aerated tea yogurt further comprises white granulated sugar, glucose, sodium tripolyphosphate, sodium citrate, citric acid monohydrate, and flavoring essence.
In a particular embodiment of the invention, the tea leaves are green tea, black tea, yellow tea, white tea, oolong tea or dark tea.
Another object of the present invention is to provide a method for preparing aerated tea yogurt, comprising the steps of:
1) preparation of milk ferment: wherein the mass fraction of the milk protein is more than 10 per mill;
2) preparing a tea soup fermented product: wherein the tea soup is tea cold extraction tea soup, and the mass fraction of soluble solid is 1-6 ‰;
3) preparing a sour liquid containing edible vinegar (such as rice vinegar, smoked vinegar, sugar vinegar, white vinegar, mature vinegar, grape vinegar, malt vinegar, and apple vinegar), preferably 5-80 ‰;
4) mixing: mixing the milk fermentation product obtained in the step 1), the tea soup fermentation product obtained in the step 2) and the gum acid liquid obtained in the step 3), and cooling to obtain a semi-finished product feed liquid;
5) and (3) inflating: and filling carbon dioxide gas into the semi-finished product feed liquid, wherein the mass fraction of the filled carbon dioxide gas is 2-8 per mill.
In a particular embodiment of the invention, the preparation of the milk ferment in step 1) comprises homogenizing, sterilizing, cooling, fermenting, demulsifying and homogenizing the milk to obtain the milk ferment; the preparation of the tea soup fermented product in the step 2) comprises cold extracting and leaching tea (preferably black tea or green tea), adding a sweetening agent (preferably glucose), mixing uniformly, sterilizing, cooling and fermenting to obtain the tea soup fermented product.
In a specific embodiment of the invention, the acid solution of gum sugar further comprises pectin and soybean polysaccharide, wherein the mass fraction of the pectin is 1-3 per mill, and the mass fraction of the soybean polysaccharide is 2-6 per mill;
preferably, the addition amount of the soybean polysaccharide is 2.0 to 2.5 times of the addition amount of the pectin.
The invention also provides aerated tea yogurt prepared by the method.
Advantageous effects
Since the stability of milk proteins is easily affected by carbon dioxide gas, long shelf life milk-containing beverages that are temporarily not filled with carbon dioxide gas are on the market. The invention provides aerated tea yogurt by reasonable product formula and process design, which has the composite taste of fermented milk, fermented tea and food vinegar and the carbon dioxide bubble feeling, smooth and sour taste, the composite taste of yogurt and fermented tea, abundant bubble feeling and strong mouthfeel, and the milk protein content is high, thereby providing a new health choice for consumers.
Definition of
The water used herein is water conventional in the art, such as spring water, well water, distilled water and tap water, which water is required to meet the national drinking water related requirements.
Tea leaves used herein are conventional in the art, such as green tea, black tea, yellow tea, white tea, oolong tea, dark tea, etc., with black tea and green tea being preferred.
The raw milk used in the method is milk conventional in the art, such as one or more of cow milk, horse milk, sheep milk and camel milk, and preferably fresh milk, such as fresh raw milk qualified by illite acceptance. The raw milk used herein may also be reconstituted milk prepared from powdered milk with water. Or may be whole milk or half milk. The protein content of the raw milk is typically about 3%. Thus, 350g of raw milk, such as fresh milk, has a protein content of about 10.5 g.
In the present invention, the sweetener is selected from one or more of sucrose, glucose, fructose, lactose.
In the present invention, the milk fermentation strain may be a strain commonly used in milk fermentation, including, but not limited to, for example, Lactobacillus bulgaricus (Lactobacillus delbrueckii subsp. bulgaricus), Streptococcus thermophilus (Streptococcus thermophilus), etc., preferably, a combination strain of Lactobacillus bulgaricus and Streptococcus thermophilus, such as Lactobacillus bulgaricus and Streptococcus thermophilus complex strain G077, may be used.
In the present invention, the strain used for tea fermentation is Lactobacillus plantarum (Lactobacillus plantarum), such as Lactobacillus plantarum Harvest LB-1 from Hansen, family. It will be appreciated by those skilled in the art that the species is not limited to lactobacillus plantarum. Any lactobacillus which can be used in the food industry, in particular in the fermentation of milk, can in particular be used in the process of the invention, and other suitable lactobacillus species, subspecies and strains can be determined by the person skilled in the art by means of customary technical measures in the art, and such lactobacillus species, subspecies and strains are also within the scope of the invention.
As used herein, the edible raw vinegar is, for example, rice vinegar, smoked vinegar, sugar vinegar, white vinegar, mature vinegar, etc., preferably apple vinegar, grape vinegar, malt vinegar, etc., more preferably apple vinegar.
The "cold extraction" of tea as described herein is a technique conventional in the art, such as extraction of tea leaves with water at low temperature for a period of time, preferably at 55-60℃ for 30 minutes. Under the cold extraction condition, the flavor substances with smaller molecular weight in the tea leaves are extracted into water. Thus, the cold extracted water contains the fresh aroma of tea leaves. The soluble solids content of the tea broth after tea extraction can be calculated as Brix%, for example, when the mass of soluble solids in 100 g of solution is 1g, Brix% is 1%.
The tea sour milk product in this application can directly be filled in the packaging container and obtain the tea sour milk finished product. For example, the finished tea yoghurt product can be packaged in various forms such as a tetra Pak brick, tetra Pak pillow, Bailey bag, Karme bag, PET bottle, HDPE bottle, or aseptic cup.
In the invention, the protein stability is ensured by using the compounding of the soybean polysaccharide and the pectin. Wherein, the pectin chain wraps the protein macromolecules, and the outer side of the pectin chain presents the same charge, so that the protein molecules are not easy to gather under stronger dispersing force. The soybean polysaccharide molecules are inserted among the protein molecules coated by the pectin, and the interaction force among the soybean polysaccharide molecules strengthens the dispersion state of the protein molecules.
In the embodiment of the present invention, the preparation method of the aerated tea yogurt of the present invention can be specifically operated as follows:
1) preparation of milk ferment: homogenizing, sterilizing, cooling, fermenting, demulsifying and homogenizing the milk to obtain a milk fermentation product; wherein the mass fraction of the milk protein is more than 10 per mill;
2) preparing a tea soup fermented product: cold extracting tea (preferably jasmine green tea or black tea) at 55-60 deg.C for 30 min; adding glucose into the tea soup filter residue, mixing uniformly, pasteurizing, cooling, and fermenting to obtain tea soup fermented product; wherein the addition amount of tea soup soluble solid is 1-6 ‰;
3) preparing the acid solution of the gum sugar: heating water to 65-75 deg.C, adding white sugar, food vinegar (preferably cider vinegar), pectin and soybean polysaccharide, dissolving for 15-20 min, cooling, and storing to obtain a gum acid solution;
4) mixing: mixing the milk fermentation product obtained in the step 1), the tea soup fermentation product obtained in the step 2) and the gum acid liquid obtained in the step 3), and cooling the mixed liquid, wherein the temperature of the cooled liquid is not more than 12 ℃, so as to obtain a semi-finished product liquid;
5) homogenizing: homogenizing the semi-finished feed liquid obtained in the step 4) at the homogenizing pressure of 40/200 bar;
6) and (3) inflating: filling carbon dioxide gas into the semi-finished product feed liquid obtained in the step 4) or the step 5), wherein the mass fraction of the filled carbon dioxide gas is 2-8 per mill;
7) and (3) sterilization and filling: and (3) sterilizing the aerated semi-finished product liquid, wherein the sterilization parameter temperature is 110 ℃, the sterilization time is 4s, and the filling temperature is less than 10 ℃.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments.
Example 1
The product formula comprises (every 1000 g of the product contains)
Figure BDA0002295519080000051
The process comprises the following steps:
1) preparation of milk ferment: homogenizing milk at 50-65 deg.C and 180bar or 30/180 bar; then sterilizing at 95 ℃ for 300 s; cooling and fermenting: inoculating lactobacillus bulgaricus and streptococcus thermophilus, and fermenting at 42-44 deg.C for 6 h; and demulsifying and homogenizing after the fermentation end point is reached.
2) Preparing a tea soup fermented product: cold extracting flos Jasmini sambac green tea with water at a ratio of 1:20 at 55-60 deg.C for 30 min; adding glucose into the tea soup after filtering residues, mixing uniformly, pasteurizing, cooling, and fermenting: inoculating lactobacillus plantarum, fermenting at 37 + -1 deg.C for 22-26 h. .
3) Preparing the acid solution of the gum sugar: heating the ingredient water accounting for 15% of the ingredient amount to 65 ℃, adding white granulated sugar, buffer salt, apple vinegar, pectin and soybean polysaccharide, dissolving for 15-20 minutes until no visible particles exist, cooling and storing.
4) Mixing: mixing the milk fermentation product obtained in the step 1), the tea soup fermentation product obtained in the step 2) and the gum acid liquid obtained in the step 3), uniformly mixing, and cooling to be less than or equal to 12 ℃ to obtain a semi-finished product feed liquid.
5) Homogenizing: homogenizing at 60-65 deg.C under 40-200 bar.
6) And (3) inflating: adding carbon dioxide gas into the homogenized semi-finished feed liquid by a mixing ratio machine, wherein the addition amount of the carbon dioxide gas is 3 per mill.
7) And (3) sterilization and filling: and (3) sterilizing the aerated feed liquid at the sterilization parameter temperature of 110 ℃ for 4s, and filling at the filling temperature of less than 10 ℃ to obtain the aerated tea yogurt.
The product obtained by the embodiment is smooth and sour in taste, has the composite taste of yoghourt and fermented tea, is full of bubbles and has strong mouthfeel. The product has good stability, and adverse phenomena such as protein flocculation, water absorption at the top, massive precipitation at the bottom and the like do not occur within the shelf life of 6 months.
Example 2
The product formula comprises (every 1000 g of the product contains)
Figure BDA0002295519080000061
Figure BDA0002295519080000071
The process comprises the following steps:
1) preparation of milk ferment: homogenizing milk at 50-65 deg.C and 180bar or 30/180 bar; then sterilizing at 95 ℃ for 300 s; cooling and fermenting: inoculating lactobacillus bulgaricus and streptococcus thermophilus, and fermenting at 42-44 deg.C for 6 h; and demulsifying and homogenizing after the fermentation end point is reached.
2) Preparing a tea soup fermented product: cold extracting black tea with water at a ratio of 1:20 at 55-60 deg.C for 30 min; adding glucose into the tea soup after filtering residues, mixing uniformly, pasteurizing, cooling, and fermenting: inoculating Lactobacillus plantarum, fermenting at 37 + -1 deg.C for 9-13 h.
3) Preparing the acid solution of the gum sugar: heating the ingredient water accounting for 15% of the ingredient amount to 75 ℃, adding white granulated sugar, buffer salt, apple vinegar, pectin and soybean polysaccharide, dissolving for 15-20 minutes until no visible particles exist, cooling and storing.
4) Mixing: mixing the milk fermentation product obtained in the step 1), the tea soup fermentation product obtained in the step 2) and the gum acid liquid obtained in the step 3), uniformly mixing, and cooling to be less than or equal to 12 ℃ to obtain a semi-finished product feed liquid.
5) Homogenizing: the homogenization temperature is 60-65 deg.C, and the homogenization pressure is 40/200 bar.
6) And (3) inflating: adding carbon dioxide gas into the homogenized semi-finished feed liquid by a mixing ratio machine, wherein the addition amount of the carbon dioxide gas is 3 per mill.
7) And (3) sterilization and filling: and (3) sterilizing the aerated feed liquid at the sterilization parameter temperature of 110 ℃ for 4s, and filling at the filling temperature of less than 10 ℃ to obtain the aerated tea yogurt.
The product obtained by the embodiment is smooth and sour in taste, has the composite taste of yoghourt and fermented tea, is full of bubbles and has strong mouthfeel. The product has good stability, and adverse phenomena such as protein flocculation, water absorption at the top, massive precipitation at the bottom and the like do not occur within the shelf life of 6 months.
Example 3
The product formula comprises (every 1000 g of the product contains)
Figure BDA0002295519080000081
The process comprises the following steps:
1) preparation of milk ferment: homogenizing milk at 50-65 deg.C and 180bar or 30/180 bar; then sterilizing at 95 ℃ for 300 s; cooling and fermenting: inoculating milk to ferment lactobacillus bulgaricus and streptococcus thermophilus at 42-44 ℃ for 6 h; and demulsifying and homogenizing after the fermentation end point is reached.
2) Preparing a tea soup fermented product: cold extracting black tea with water at a ratio of 1:20 at 55-60 deg.C for 30 min; adding glucose into the tea soup after filtering residues, mixing uniformly, pasteurizing, cooling, and fermenting: inoculating Lactobacillus plantarum, fermenting at 37 + -1 deg.C for 9-13 h.
3) Preparing the acid solution of the gum sugar: heating the ingredient water accounting for 15% of the ingredient amount to 75 ℃, adding white granulated sugar, buffer salt, apple vinegar, pectin and soybean polysaccharide, dissolving for 15-20 minutes until no visible particles exist, cooling and storing.
4) Mixing: mixing the milk fermentation product obtained in the step 1), the tea soup fermentation product obtained in the step 2) and the gum acid liquid obtained in the step 3), uniformly mixing, and cooling to be less than or equal to 12 ℃ to obtain a semi-finished product feed liquid.
5) Homogenizing: the homogenization temperature is 60-65 deg.C, and the homogenization pressure is 40/200 bar.
6) And (3) inflating: adding carbon dioxide gas into the homogenized semi-finished feed liquid by a mixing ratio machine, wherein the addition amount of the carbon dioxide gas is 2 per mill.
7) And (3) sterilization and filling: and (3) sterilizing the aerated feed liquid at the sterilization parameter temperature of 110 ℃ for 4s, and filling at the filling temperature of less than 10 ℃ to obtain the aerated tea yogurt.
The product obtained by the embodiment is smooth and sour in taste, has the composite taste of yoghourt and fermented tea, is full of bubbles and has strong mouthfeel. The product has good stability, adverse phenomena such as protein flocculation, water absorption at the top, massive precipitation at the bottom and the like do not occur within the shelf life of 6 months, and the protein content of the product is measured to be 1.02g/100 mL.
Example 4
The product formula comprises (every 1000 g of the product contains)
Figure BDA0002295519080000091
The process comprises the following steps:
1) preparation of milk ferment: homogenizing milk at 50-65 deg.C and 180bar or 30/180 bar; then sterilizing at 95 ℃ for 300 s; cooling and fermenting: inoculating lactobacillus bulgaricus and streptococcus thermophilus, and fermenting at 42-44 deg.C for 6 h; and demulsifying and homogenizing after the fermentation end point is reached.
2) Preparing a tea soup fermented product: cold extracting black tea with water at a ratio of 1:20 at 55-60 deg.C for 30 min; adding glucose into the tea soup after filtering residues, mixing uniformly, pasteurizing, cooling, and fermenting: inoculating Lactobacillus plantarum, fermenting at 37 + -1 deg.C for 9-13 h.
3) Preparing the acid solution of the gum sugar: heating the ingredient water accounting for 15% of the ingredient amount to 75 ℃, adding white granulated sugar, buffer salt, apple vinegar, pectin and soybean polysaccharide, dissolving for 15-20 minutes until no visible particles exist, cooling and storing.
4) Mixing: mixing the milk fermentation product obtained in the step 1), the tea soup fermentation product obtained in the step 2) and the gum acid liquid obtained in the step 3), uniformly mixing, and cooling to be less than or equal to 12 ℃ to obtain a semi-finished product feed liquid.
5) Homogenizing: the homogenization temperature is 60-65 deg.C, and the homogenization pressure is 40/200 bar.
6) And (3) inflating: adding carbon dioxide gas into the homogenized semi-finished feed liquid by a mixing ratio machine, wherein the addition amount of the carbon dioxide gas is 3 per mill.
7) And (3) sterilization and filling: and (3) sterilizing the aerated feed liquid at the sterilization parameter temperature of 110 ℃ for 4s, and filling at the filling temperature of less than 10 ℃ to obtain the aerated tea yogurt.
The product obtained by the embodiment is smooth and sour in taste, has the composite taste of yoghourt and fermented tea, is full of bubbles and has strong mouthfeel. The product has good stability, and adverse phenomena such as protein flocculation, water absorption at the top, massive precipitation at the bottom and the like do not occur within 6 months of shelf life, and the protein content of the product is measured to be 1.01g/100 mL.
Example 5
The preparation method of this example is similar to example 2, except that the amount of apple cider vinegar added is 5.0g, and the amounts of soybean polysaccharide and pectin added are 6.0g and 3.0g, respectively. The prepared product is smooth and sour in taste, has the composite taste of yoghourt and fermented tea, is full in bubble feeling and strong in mouthfeel. The product has good stability, adverse phenomena such as protein flocculation, water absorption at the top, massive precipitation at the bottom and the like do not occur within the shelf life of 6 months, and the protein content of the product is measured to be 1.03g/100 mL.
Example 6
The preparation method of this example is similar to that of example 2, except that the amount of apple cider vinegar added is 80.0 g. The prepared product is smooth and sour in taste, has the composite taste of yoghourt and fermented tea, is full in bubble feeling and strong in mouthfeel. The product has good stability, the adverse phenomena of protein flocculation, water absorption at the top, massive precipitation at the bottom and the like do not occur within the shelf life of 6 months, and the protein content of the product is measured to be 1.04g/100 mL.
Comparative example 1
This comparative example was prepared similarly to example 2 except that step 6) aeration was not included and a product formulation similar to example 2 except that no carbon dioxide gas was included.
Compared with the product of example 2, the product obtained in this comparative example has the following characteristics: the yoghourt has smooth and sour taste, has the composite taste of yoghourt and fermented tea, has good product stability, does not have the adverse phenomena of protein flocculation, water absorption at the top, massive sedimentation at the bottom and the like within the shelf life of 6 months, but has no bubble feeling and slightly poor taste.
Comparative example 2
The comparative example was prepared in a similar manner to example 2, except that the amounts of soy polysaccharide and pectin added were different, and the formula of the product prepared was similar to example 2, except that the amount of soy polysaccharide was 3.4g and the amount of pectin was 0.8 g.
Compared with the product of example 2, the product obtained in this comparative example has the following characteristics: the product stability is poor, the adverse phenomena of protein flocculation, water absorption at the top, massive precipitation at the bottom and the like appear in the shelf life of 6 months, and the protein content of the product is measured to be 0.70g/100 mL.
Comparative example 3
The preparation method of this comparative example is similar to that of example 2, except that the addition amounts of soybean polysaccharide and pectin are different, and the formula of the product prepared by the comparative example is similar to that of example 2, except that the content of soybean polysaccharide is 1.8g, and the content of pectin is 1.5 g.
Compared with the product of example 2, the product obtained in this comparative example has the following characteristics: the product stability is poor, the adverse phenomena of protein flocculation, water absorption at the top, massive precipitation at the bottom and the like appear in the shelf life of 6 months, and the protein content of the product is measured to be 0.65g/100 mL.
In order to embody the beneficial effects of the product provided by the invention, the taste preference degree evaluation and the detection of related nutritional ingredient indexes are specially carried out on the products of the above examples and comparative examples, and the results are as follows:
TABLE 1
Figure BDA0002295519080000121
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. An aerated tea yogurt comprises fermented product of tea cold extraction and extraction tea soup, milk fermented product and edible raw vinegar (such as rice vinegar, smoked vinegar, sugar vinegar, white vinegar, mature vinegar, grape vinegar, malt vinegar, and apple vinegar), and carbon dioxide gas is filled in the tea yogurt; wherein the mass fraction of the milk protein is more than 10 per thousand and the mass fraction of the carbon dioxide gas is 2-8 per thousand based on the total weight of the final product.
2. The aerated tea yogurt as claimed in claim 1, wherein the edible raw vinegar is present in an amount of 5-80% by weight and the tea leaves are cold-extracted from the tea soup to give a soluble solid content of 1-6% by weight, based on the total weight of the final product.
3. The aerated tea yogurt of claim 1, further comprising pectin and soybean polysaccharide, wherein the mass fraction of pectin is 1-3% o, and the mass fraction of soybean polysaccharide is 2-6% o;
preferably, the addition amount of the soybean polysaccharide is 2.0 to 2.5 times of the addition amount of the pectin.
4. The aerated tea yogurt of claim 1, further comprising white granulated sugar, glucose, sodium tripolyphosphate, sodium citrate, citric acid monohydrate, and flavoring essence.
5. The aerated tea yogurt of claim 1, wherein the tea leaves are green tea, black tea, yellow tea, white tea, oolong tea, or black tea.
6. A preparation method of aerated tea yogurt comprises the following steps:
1) preparation of milk ferment: wherein the mass fraction of the milk protein is more than 10 per mill;
2) preparing a tea soup fermented product: wherein the tea soup is tea cold extraction tea soup, and the mass fraction of soluble solid is 1-6 ‰;
3) preparing a sour liquid containing edible vinegar (such as rice vinegar, smoked vinegar, sugar vinegar, white vinegar, mature vinegar, grape vinegar, malt vinegar, and apple vinegar), preferably 5-80 ‰;
4) mixing: mixing the milk fermentation product obtained in the step 1), the tea soup fermentation product obtained in the step 2) and the gum acid liquid obtained in the step 3), and cooling to obtain a semi-finished product feed liquid;
5) and (3) inflating: and filling carbon dioxide gas into the semi-finished product feed liquid, wherein the mass fraction of the filled carbon dioxide gas is 2-8 per mill.
7. The method of claim 6, wherein the preparing of the milk ferment in step 1) comprises homogenizing, sterilizing, cooling, fermenting, demulsifying, and homogenizing the milk to obtain the milk ferment; the preparation of the tea soup fermented product in the step 2) comprises cold extracting and leaching tea (preferably black tea or green tea), adding a sweetening agent (preferably glucose), mixing uniformly, sterilizing, cooling and fermenting to obtain the tea soup fermented product.
8. The preparation method according to claim 6, wherein the acid gum solution further comprises pectin and soybean polysaccharide, wherein the mass fraction of pectin is 1-3% o, and the mass fraction of soybean polysaccharide is 2-6% o;
preferably, the addition amount of the soybean polysaccharide is 2.0 to 2.5 times of the addition amount of the pectin.
9. Aerated tea yogurt produced by the process according to any one of claims 6-8.
CN201911199506.9A 2019-11-29 2019-11-29 Aerated apple vinegar flavored tea yogurt and preparation method thereof Pending CN112868771A (en)

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