乳酸菌耐酸耐胆盐分析与胆盐水解酶研究

被引:32
作者
冯秀娟
左芳雷
陈丽丽
陈尚武
机构
[1] 中国农业大学食品科学与营养工程学院
关键词
乳酸菌; 酸耐受性; 胆盐耐受性; 胆盐水解酶;
D O I
暂无
中图分类号
TS252.1 [基础科学];
学科分类号
100403 [营养与食品卫生学];
摘要
从我国新疆传统乳制品中分离得到26株乳酸菌,经16S rRNA鉴定其分别属于乳杆菌属、乳球菌属、肠球菌属、片球菌属和肠膜明串珠菌属细菌。酸、胆盐耐受性分析显示杆菌对酸耐受性普遍高于球菌,对胆盐耐受性低于球菌。个别菌株具有胆盐水解酶(BSH)编码基因和胆盐水解酶活性,其中肠膜明串珠菌肠膜亚种和格氏乳球菌是国内外首次报道,推测其bsh基因通过水平基因转移获得。
引用
收藏
页码:139 / 147
页数:9
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