Post-acidification resistant fermented yogurt and preparation method thereof

Abstract

The invention discloses post-acidification resistant fermented yogurt and a preparation method thereof, belongs to the technical field of microbial fermentation, and solves the problem of yogurt fermentation post acidification. The post-acidification resistant fermented yogurt is prepared by the following preparation method: activating Lactobacillusrhamnosus for 3-4 times to get an activated strain, then inoculating the activated strain to fresh milk added with monosaccharide and a stabilizer for constant temperature fermentation to obtain fermented yogurt, namely the post-acidification resistant fermented yogurt; wherein taking 100g of the fresh milk as a reference, 0.8-1g of the monosaccharide is added, 0.18-0.24g of the stabilizer is added, and the Lactobacillusrhamnosus volume is 2-3% of the fresh milk volume. The post-acidification resistant fermented yogurt solves the problem of yogurt fermentation post acidification, and is good in taste and long in shelf life.

Description

Technical field

[0001] The invention is the field of microbial fermentation technology, which involves yogurt, which involves a postprandive fermented yogurt and their preparation methods. Background technique

[0002] Yogurt is generated by fresh milk by lactic acid bacteria. During the fermentation process of lactic acid bacteria, lactic acid in milk is decomposed to generate lactic acid, and the protein in milk produces polypeptides and amino acids. Lactic acid bacteria can also produce a variety of ingredients such as polysaccharides and aromatherapy, which forms it to form a formation of polysaccharides and aromatherapy, which forms it.Yogurt's unique smooth taste and unique flavor.Among the fermented yogurt, the most commonly used lactic acid bacteria are Lactobacillus. Bulgaricus and the Spreptococcus thermophilus.

[0003] Yogurt is a dairy product containing active lactic acid bacteria. After the production of fermentation, in the process of product storage, transportati...