Cholesterol-degrading strains KM-16 was isolated from Tibet traditional koumiss.Using VITEK-32 AutomaticMicrobe Analytic Systems,the isolate was identified as lactobacillus casei.In MRS medium,KM-16 strain showed 51.8% ofcholesterol was degraded.The cholesterol-degrading activities of the strains were mainly due to their bile salt coprecipitionactivity and the cholesterol asimilation.The effects of KM-16 on the total serum cholesterol(TC),triglycerids(TG) and high densitycholesterol(HDL-C)were investigated ...