嗜酸乳杆菌抑菌特性的研究

THE STUDIES ON THE ANTAGONISTIC PROPERTY OF LACTOBACILLUS ACIDOPHILUS

目的 :对从婴儿肠道中分离出来的两株嗜酸乳杆菌的抑菌特性进行研究。方法 :采用 MRS培养基。结果 :嗜酸乳杆菌对致病性大肠埃希菌、金黄色葡萄球菌以及炭疽杆菌有明显的抑菌作用。37℃培养 2 4h抑菌圈大小均在 15 m m以上。结论 :该菌是肠道中的益生菌。

Objectives:The antagonistic property of two strains of Lactobacillus acidophilus,which were isolated from the intestinal tract of infant,was studied.Method:Using MRS as medium.Results:Lactobacillus acidophilus had obvious antagonistic activity on the pathogenic E.coli,S.aureus and B.anthracis,and the size of antagonistic discs was above 15 mm after 24 h of inculation time in the temperature of 37℃. Conclusion:Lactobacillus acidophilus was the probiotic bacterium in human intestinal tract.