Lactic Acid Production and Antagonistic Effect of Lactic Acid Bacteria from Piglet Intestine
- VernacularTitle:猪源乳酸菌产乳酸及其抑菌特性研究
- Author:
Hui-Fen WU
;
Sheng-Yong MAO
;
Wen YAO
;
Wei-Yun ZHU
;
- Publication Type:Journal Article
- Keywords:
Lactic acid bacteria,Lactic acid production, Antagonistic property, Piglet intestine
- From:
Microbiology
1992;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Lactic acid production and antagonistic property of five strains of LAB isolated from piglet intestine were investigated. The results showed that among all strains L5 exhibited the most rapid production and highest amount of lactic acid in the culture. Consequently, the pH in L5 culture showed the fast decline, with the final value significantly lower than those of other cultures. Strain L1 showed the least production of lactic acid and highest pH among all strains. Culture supernatants of the five strains showed different degrees of antagonistic effect against pathogenic E. coli K88, K99, 987P, O141, E1, and S. aureus. When taking out the effect of the acid, the culture supernatants still showed 22%～53% inhibitory effect, suggesting that the bacteria produced other inhibitory substances apart from lactic acid. The inhibitory effect of the culture supernatant was above 92% after heat treatment and above 85% when treated with proteases.
