一株从青海酸奶中分离出来的嗜酸乳杆菌的分离鉴定与特性研究

摘要

从青海酸奶中分离鉴定出嗜酸乳杆菌,并对其进行降血脂的研究.结合细菌形态学和16S rDNA序列同源性分析进行鉴定,并通过检测总胆固醇和甘油三酯的含量来确定嗜酸乳杆菌降血脂的能力.结果表明,从青海酸奶中分离出的菌株为嗜酸乳杆菌,其能降低小鼠血清中的胆固醇,可见嗜酸乳杆菌具有降血脂的功能.%To isolate one kind of Lactobacillus acidophilus in yogurt from Qinghai and investigate its hypolipidemic action.Bacterial identification is performed on the basis of bacterial morphology and 16S rDNA sequence homology analysis,and the hypolipidemic action is researched by determining Lactobacillus acidophilus reducing the content of total cholesterol and triglycerides.The results show that the bacterium is Lactobacillus acidophilus,which can reduce content of total cholesterol and triglycerides.Lactobacillus acidophilus is characterized by reducing blood fat.