产脲酶的肠道厌氧菌种类及其活性。
Urease-producing species of intestinal anaerobes and their activities.
作者信息
Suzuki K, Benno Y, Mitsuoka T, Takebe S, Kobashi K, Hase J
出版信息
Appl Environ Microbiol. 1979 Mar;37(3):379-82. doi: 10.1128/aem.37.3.379-382.1979.
Abstract
Urease activities of anaerobic bacteria that constituted predominant gut flora were examined. It was demonstrated that some strains of Eubacterium aerofaciens, E. lentum, and Peptostreptococcus products produced urease. They were the most numerous species in human feces. All strains of Bifidobacterium infantis and some strains of Bacteroides multiacidus, B. bifidum, Clostridium symbiosum, Fusobacterium necrophorum, F. varium, Lactobacillus fermentum, Peptococcus asaccharolyticus, and P. prevotii produced urease. The optimum pH of the Lactobacillus urease was found to be 4.0, whereas the pH value of B. multiacidus urease was 8.0.
摘要
对构成主要肠道菌群的厌氧细菌的脲酶活性进行了检测。结果表明，某些产气真杆菌、迟缓真杆菌和不解糖消化链球菌菌株可产生脲酶。它们是人类粪便中数量最多的菌种。所有婴儿双歧杆菌菌株以及某些多酸拟杆菌、两歧双歧杆菌、共生梭菌、坏死梭杆菌、可变梭杆菌、发酵乳杆菌、不解糖消化球菌和普氏消化球菌菌株均可产生脲酶。发现乳酸杆菌脲酶的最适pH值为4.0，而多酸拟杆菌脲酶的pH值为8.0。
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