Preparation method and product of multiple lactic acid bacteria fermentation agent for fermented milk

Abstract

The invention discloses a multiple lactic acid bacteria fermentation agent for a fermented milk and a preparation method of the multiple lactic acid bacteria fermentation agent. The multiple lactic acid bacteria fermentation agent comprises lactobacillus bulgaricus, streptococcus thermophilus and probiotics. The preparation method of the multiple lactic acid bacteria fermentation agent comprises the following steps: (1) propagating the needed strains for two to three times; (2) carrying out centrifugal precipitation to the strains; (3) washing the strains with sterile water, and resuspending;(4) mixing the suspension of the strains with a sterile skim milk containing a cryoprotectant uniformly; and (5) freezing and drying in vacuum to obtain the multiple lactic acid bacteria fermentationagent. The multiple lactic acid bacteria fermentation agent prepared by adopting the method can realize the compounding of the probiotics and the conventional strains such as the lactobacillus bulgaricus and the streptococcus thermophilus for the fermented milk. Compared with the fermentation agent prepared by adopting the traditional method, the product is convenient to use, and the products of different batches are more stable. In addition, the homogenization of the fermentation agent can be avoided, and the competitiveness can be improved.

Description

technical field

[0001] The invention belongs to the field of food industry, and in particular relates to a preparation method of a fermented milk multiple starter and the prepared starter. Background technique

[0002] The term probiotic originated from Greek, meaning "specialized life", and refers to live microorganisms that show health care effects on the host through the body's immune and mucosal immune pathways or by improving the micro-ecological balance of the host's intestinal tract. Probiotics have excellent functional properties. Studies have shown that probiotics can adjust the balance of human intestinal flora, increase the number of probiotics in the intestinal tract, and treat intestinal flora imbalance; promote the body's digestion and absorption of food; improve the body's immunity and enhance human immune function; absorb carcinogens And reduce the concentration of carcinogenic mutants in feces and the activity of certain enzymes, inhibit and slow down the i...

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