通过测定从内蒙古传统乳制品中分离的6株降胆固醇性能优良的乳酸菌的生长特性及其在模拟肉汤中胆固醇降解作用,研究其在发酵肉制品中的降胆固醇性能,结果表明,菌株2-2B33,TE7401,TE5301,TF5201胆固醇降解率高达70%以上且优于标准菌。各菌株在MRS、模拟肉汤、MRS+6%NaCl+150 mg/kg NaNO2培养基中的产酸性能较好且在2 d后pH可降到3.90左右。其中TE7401号菌对胆固醇的降解率、不同温度不同pH下的生长性能及产酸性能较好,故可做为1株降胆固醇性能、生长性能良好的发酵剂。
The growth characteristics and cholesterol-reducing ability of six native Lactic acid bacteria in meat starter cultures were studied.The results showed that the cholesterol removal rate of strains 2-2B33,TE7401,TE5301,TF5201 was up to 70%.The pH of different strains can reach to approximately 3.9 for 48h in different broths.TE7401 has the good ability of removing cholesterol and growth characteristics,Then the strain may be used in the future as probiotic starter cultures for novel fermented sausage manufacture.
