高效降胆固醇乳酸菌的筛选  

Screening of Lactobacillus for efficient cholesterol-degrading

作　　者：田建军[1] 张开屏[2] 靳烨[1] 

机构地区：[1]内蒙古农业大学食品科学与工程学院,呼和浩特010018 [2]内蒙古商贸职业学院工程系,呼和浩特010018

出　　处：《食品科技》2011年第11期21-25,30,共6页Food Science and Technology

基　　金：国家"十一五"科技支撑项目(2006BAD04A06)

摘　　要：研究了25株嗜酸乳杆菌在MRS-CHOL培养基中对胆固醇的降解量,降胆固醇的能力,以及对酸、胆盐的耐受性。实验表明:所有实验菌株均有降解培养物中胆固醇的能力,其中有6株实验菌对培养物中胆固醇的降解率大于40%,这6株菌对胆固醇的脱除效力也较高,同时对这6株菌的耐酸、耐胆盐,以及对胆固醇的脱除能力进行了比较,筛选出降胆固醇能力较强同时对酸和胆盐耐受性较强的嗜酸乳杆菌1株。In this paper, 25 Lactobacillus acidophilus were studied in the experiments. The quantity of the cholesterol-degrading in MRS-CHOL medium was used to analyze their cholesterol-reducing ability, then bile-tolerance and acid-tolerance. The results showed that all strains could remove cholesterol from media and removal rates of in which 6 strains were more than 40%. Meanwhile, these 6 strains had high removal effectiveness. As a result, these 6 strains were screened for their excellent cholesterol-reducing ability. Acid-tolerance and bile-tolerance were tested and compared with reducing cholesterol ability of these 6 strains respectively. The bile-tolerance and acid-tolerance were varied from strain to strain. Among 6 strains, 1 strains Lactobacillus acidophilus demonstrated higher ability of removal cholesterol, acid-tolerance and bile-tolerance than other strains.

关 键 词：乳酸菌 降胆固醇 菌株筛选 

分 类 号：TS201.3[轻工技术与工程—食品科学]