益生菌素对嗜酸乳杆菌LA-5生长的影响

Influence of Probiotics on Growth of Lactobacillus Acidophilus LA-5

脱脂乳(110 g/L)中分别添加3种益生菌素(菊粉、麦芽低聚糖和低聚异麦芽糖)增殖发酵嗜酸乳杆菌LA-5,研究这3种益生菌素对LA-5菌株生长的影响,如活菌数、酸乳黏度、双乙酰含量、酸度、pH等的变化等指标。研究结果表明:低聚异麦芽糖对LA-5生长促进作用最佳,12 h左右CFU值达到最高,为2.37×108CFU/mL,其酸乳产品双乙酰含量<0.2 mg/L,无不愉快气味;其酸度在16 h时达到58.87°T,为添加3种益生菌素中最高。

Skimmed milk（100 g/L）, which contains three kinds of probiotics （inulin, isomaho-oligosaccharide and maho-oligosaccharide ）, was used to proliferate Lactobacillus acidophilus LA-5 （LA-5）, and influence of these probiotics on the growth of LA-5 （such as the viscosity, the content of the diaeetyl, acidity, pH value and so on） was studied. The results showed that the promotion effect of maho-oligosaccharide on LA-5 is best, and the CFU value reached to the top after about 12 h and was 2.37×10^8 per milliliter; the biacetyl content is lower than 0.2 mg/L, and there is no bad odor; and acidity reach to 58.87 °T on around 16 h, which is the highest value in these prohiotics.