Studies on the Action Mechanism for Cholesterol- lowering of Lactobacillus which yields Bile Salt Hydrolase from Kefir Graifts

摘要：

Cholesterol-lowering strains were obtained by high throughput screening technology and orthophthalaldehyde method. We used oxford cup method to screen again to obtain strains of high yield bile salt hydrolase and illuminate action mechanism of Lactobacillus reducing cholesterol. Screened six strains had the ability of high yield bile salt hydrolase and good ferment ability. The results of identifying bacteria species: strain KTx、KL1、J1 were Lactobacillus casei, strain Tx was Streptococcus thermophUus, strain KS4、P1 were Lactococcus lactis subsp.lactis, where the last two bacteria were strain of high yield bile salt hydrolase to be few known in literature. This work showed that dissociation bile salts and cholesterol conjuncted sediments by bile salt hydrolase decomposing conjugated bile salts.

关键词： kefir grains Lactobacillus bile salt hydrolase action mechanism

作者: Hui Liu Yuanhong Xie Tao Han Hongxing Zhang

作者单位: College of Food Science, Beijing University of Agriculture Beijing, China Beijing Key Laboratory of Agricultural Product Detection and Control of Spoilage Organisms and Pesti

会议类型: 国际会议

会议名称: The 2012 International Conference of Agricultural Engineering and Food Engineering(2012年国际农业工程与食品工程学术会议 ICAE 2012)

会议地点: 哈尔滨

会议语种:英文

页码: 867-870

在线出版日期: 2012-06-16（万方平台首次上网日期，不代表论文的发表时间）