Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Microbiology》 2005-01
Add to Favorite Get Latest Update

Lactic Acid Production and Antagonistic Effect of Lactic Acid Bacteria from Piglet Intestine

WU Hui-Fen MAO Sheng-Yong YAO Wen ZHU Wei-Yun~(**)(Laboratory of Gastrointestinal Microbiology, Department of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095 )  
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.
【Fund】: 国家自然科学基金项目(No.30005005);; 国家杰出青年科学基金(No.30025034)
【CateGory Index】: S816.3
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved