3株罗伊氏乳杆菌生物学特性的分析比较

Objective] The study researched the biological characteristics of three stains of Lactobacillus reuteri, providing guidance in industrial production. [Methods] We Analyzed and compared diverse characteristics and capabilities of three strains of Lactobacillus reuteri preserved in the lab, such as growth curve, pH curve, tolerance to artificial gastric intestinal juice, tolerance to porcine bile salt, adhesive capacity, antimicrobial activity, and tolerance to antibiotics.[Results]The growth trend of these 3 strains was similar. All of the 3 strains had a good tolerance to artificial gastric intestinal juice, they could inhibited the growth of Escherichia coli and Staphylococcus aureus effectively. L0 and L2 showed poor tolerance in high porcine bile salt environment, while the performance of L1 was satisfactory. In addition, L1 and L2 had strong adhesive ability and the tolerance of 3 strains to 20 antibiotics was different.[Conclusions]L1 can be applied in the following industrial production since its biological characteristics are significantly better than the other two strains.