Urease-producing species of intestinal anaerobes and their activities

Author:

Suzuki K,Benno Y,Mitsuoka T,Takebe S,Kobashi K,Hase J

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.

Publisher

American Society for Microbiology

Subject

Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology

Reference19 articles.

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4. Effect of diet on human fecal flora: comparison of Japanese and American diets;Finegold S. M.;Am. J. Clin. Nutr.,1974

5. Urea as a nitrogen source for pigs fed diets supplemented with lysine and methionine;Grimson R. E.;J. Anim. Sci.,1971

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