Kinetic Analysis of the Inhibition of in vitro Growth of Pathogenic Escherichia coli K88 and O138 by Lactobacillus Isolates from Porcine Intestine
- VernacularTitle:乳杆菌对致病性大肠杆菌K88和O138体外存活抑制的动力学研究
- Author:
Yong LIN
;
Wen YAO
;
Wei-Yun ZHU
;
- Publication Type:Journal Article
- Keywords:
Lactobacillus intestinalis, K88, O138, Antibacterial activity
- From:
Microbiology
2008;0(10):-
- CountryChina
- Language:Chinese
-
Abstract:
Fermentation property and kinetic analysis of the inhibition of in vitro growth of pathogenic Escherichia coli K88, O138 by Lactobacillus intestinalis isolated from porcine intestine mucus were investi-gated. The results of fermentation showed that L1 result in a pH of 3.90 within 12 h and a large amount of lactic acid production, with the concentration of 104.08 mmol/L. Kinetic analysis of the antibacterial activity of L1 metabolic product toward K88, O138 showed that CFUS display strong antibacterial activity toward K88, O138; the antibacterial activity of L1 CFUS was higher than the lactic acid control samples and was mainly due to the production of lactic acid; K88, O138 had the tolerance property toward pH 4.5.
