Double-protein fermented milk beverage rich in active Lactobacillus plantarum and preparation method thereof

Abstract

The invention discloses a double-protein fermented milk beverage rich in active Lactobacillus plantarum and a preparation method thereof, and belongs to the technical field of fermentation engineering. The preparation method includes the following steps: inoculating Lactobacillus plantarum into double-protein base material components with the addition of proliferating factors and inorganic salts for fermentation to obtain fermented milk, and then adding stabilizers, sweeteners and water into the fermented milk for blending to obtain the fermented milk beverage; the preparation method can successfully realize the proliferation and fermentation of the Lactobacillus plantarum in the double-protein base material, and can greatly shorten the fermentation time of the Lactobacillus plantarum in the double-protein base material; the fermented milk beverage obtained by the preparation method is high in probiotic content, and the viable count can reach 5.0 x 10 8(superscript) cfu / mL or above; regarding the fermented milk beverage, the product system is stable, the protein content meets the requirements of national standards, sourness and sweetness are palatable, and the cost can be controlled; and the fermented milk beverage obtained by the preparation method is performed with low temperature storage at 0-10 DEG C for 21 days, and the viable count can be stabilized at 3.0 x 10 7(superscript) cfu / mL or above.

Description

technical field [0001] The invention relates to a double-protein fermented milk drink rich in active Lactobacillus plantarum and a preparation method thereof, belonging to the technical field of fermentation engineering. Background technique [0002] As a kind of milk product, fermented milk drink is deeply loved by people for its unique sweet and sour taste and frankincense flavor, and has been sold well in the market for many years. According to the types of fermented raw materials, fermented milk drinks can be roughly divided into plant protein fermented milk, milk protein fermented milk drinks and double protein fermented milk drinks. [0003] Among them, the double-protein fermented milk drink is obtained by blending raw milk (or reconstituted milk), white sugar, and soybean protein as the main raw materials and fermented by lactic acid bacteria. Since the soybean protein used in the double-protein fermented milk Contains 8 kinds of essential amino acids needed by the ...

AI Technical Summary

Problems solved by technology

[0006] We can try to use Lactobacillus plantarum instead of Streptococcus thermophilus and Lactobacillus bulgaricus to produce double-protein fermented milk to solve the problems of lack of probiotic properties and serious flavor homogeneity in existing double-protein fermented milk and double-protein fermented milk drinks. However, due to the lack of protease genes of Lactobacillus plantarum, the macromolecular protein in milk cannot be effectively used for growth and reproduction, making this attempt unsuccessful.

[0007] Although Guangming Company's "Changyou" milk beverage uses Lactobacillus plantarum for fermented milk fermentation, it mainly ferments by mixing Lactobacillus plantarum and Lactobacillus bulgaricus and other bacteria. The concentration of viable bacteria is very low, and the fermentation time is very long; the patent with the publication number CN102715325A achieves the purpose of proliferating Lactobacillus plantarum by adding yeast powder as a proliferation factor in the double-protein fermentation system, but the fermentation time is still relatively long. Long, and the yeast powder used in it will have a greater impact on the flavor of dairy products

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