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Issue title: The Proceedings of the 3rd International Conference on Food Factors (ICoFF 03)
Article type: Research Article
Authors: Ishida-Fujii, Keiko | Goto, Shingo | Kuboki, Hiroshi | Hirano, Shin-ichi | Sakamoto, Michiko | Sato, Michikatsu
Affiliations: R & D Center, Alcohol Enterprise Head Office, New Energy and Industrial Technology Development Organization (NEDO), 5-1, Inagehigashi 4-chome, Inage-ku, Chiba-shi, Chiba, 263-0031, Japan | Mercian Cleantec Co., 9-1, Johnan 4-chome, Fujisawa-shi, Kanagawa, 251-0057, Japan
Note: [] Corresponding author. Tel.: +81 43 241 3927; Fax: +81 43 247 3951; E-mail: fujii@jp-alcohol.com
Abstract: Lactic acid bacteria were isolated from an alcohol fermentation broth, and the activity as a probiotic was examined using pathogenic E. coli. Thirty-six strains exhibiting good growth were isolated in the medium of concentrated mush which was a residue resulted in the alcohol distillation process. One of these strains, Lactobacillus paracasei subsp. paracasei I-5, could be grown in the medium containing 8 vol% ethanol and at 45°C. The characteristics were different from the type strain, L. paracasei subsp. paracasei NBRC 15889™. L. paracasei I-5 showed an excellent growth in the concentrated mush, which just diluted two-fold and adjusted the pH. ICR mice were fed with a standard germ-free feed (CMF) and the strain I-5 (7 × 10^9 cells/day) was orally administrated for 11 days prior to the intraperitoneal challenge with pathogenic E. coli Juhl. After the challenge, mice administrated the strain I-5 exhibited a high survival rate and survival extension days (p < 0.01) compared with the control. The results suggested that the strain might enhance the animal resistance against microbial pathogens. Neonatal diarrhea caused by E. coli is a serious disease in calf breeding. The strain might be practically valuable to prevent diarrhea in calves.
Keywords: lactic acid bacteria, Lactobacillus paracasei, pathogenic E. coli
Journal: BioFactors, vol. 21, no. 1-4, pp. 155-158, 2004
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