Studied on hyperplasia of Lactobacillus in milk supplemented with soybean peptides

Studied hyperplasia of Lactobacillus in milk supplemented with soybean peptides.Remade milk was used as raw materials,and the soybean peptides was used to strengthen the growth of Lactobacillus.The fermentation of Lactobacillus went at the temperature of 41℃ in static culture.The effects of soybean peptides on the growth and acid production of Lactobacillus were compared,through a series of indicators,including pH value,absorbance titration acidity,and plate counting.The results showed that soybean peptides had great effect of promotion on the growth and acid production of Lactobacillus.The best addition of soy peptide in yogurt fermentation was 3%.The survival number of Lactobacillus is 1.2×107CFU/mL,1.3 times more than the control.