Knarreborg Ane, Engberg Ricarda M, Jensen Søren K, Jensen Bent B
Danish Institute of Agricultural Sciences, Department of Animal Nutrition and Physiology, Research Centre Foulum, DK-8830 Tjele, Denmark.
Appl Environ Microbiol. 2002 Dec;68(12):6425-8. doi: 10.1128/AEM.68.12.6425-6428.2002.
A quantitative assay based on high-performance liquid chromatography analysis of bile salts and bacterial protein determination was established for investigating bile salt hydrolase (BSH) activity in bacteria isolated from the small intestine of chickens. Bacteria were isolated using various media and were subsequently grouped according to cell morphology, fermentation profile, and 16S ribosomal DNA sequence. Representative isolates from each bacterial group were assayed for BSH activity. The isolates differed in BSH activity with respect to the state of growth and preculturing with and without taurochenodeoxycholate. The highest levels of BSH activity were found with Enterococcus faecium and Clostridium perfringens.
建立了一种基于胆汁盐高效液相色谱分析和细菌蛋白测定的定量分析方法,用于研究从鸡小肠分离出的细菌中的胆汁盐水解酶(BSH)活性。使用各种培养基分离细菌,随后根据细胞形态、发酵谱和16S核糖体DNA序列进行分组。对每个细菌组的代表性分离株进行BSH活性测定。分离株在生长状态以及有无牛磺鹅去氧胆酸盐预培养的情况下,其BSH活性有所不同。粪肠球菌和产气荚膜梭菌的BSH活性水平最高。