In this study 6 types of safe lactic acid bacteria were inoculated with high MRS-CHOL culture,whose cholesterol-degrading abilities had been tested.The relation between pH value and rate of degrading of cholesterol were studied. The results indicate 6 strains have different rates of cholesterol-degrading: Lp(28.088%), 3#(25.059%), 4#(24.922%), Lf(24.554%), Ld(22.248%), and 5#(18.513%) respectively.The rate of cholesterol-degrading increased with incredsing quantity of inoculant;All the strains except Lf pre...