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Enhancing acid tolerance of Leuconostoc mesenteroides with glutathione.
MedLine Citation:
PMID:  22160366     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Leuconostoc mesenteroides is a commercially important lactic acid bacterium currently used as a starter for kimchi and kefir. However, its sensitivity to acid stress limits its performance. L. mesenteroides was grown in a medium supplemented with 3.2 or 6.4 mM glutathione (GSH), and cell survival rates were measured during a long-term mild acid challenge (pH 4.0). As a result, GSH was imported by the cells and protected against acid stress; thereafter it was consumed as a nutrient. Acid stress resistance of starter cultures of this bacterium can thus be improved by cultivating it in media supplemented with GSH.
Authors:
Ji Eun Kim; Hyun-Ju Eom; Yujin Kim; Ji Eun Ahn; Jeong Hwan Kim; Nam Soo Han
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-12-9
Journal Detail:
Title:  Biotechnology letters     Volume:  -     ISSN:  1573-6776     ISO Abbreviation:  -     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8008051     Medline TA:  Biotechnol Lett     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Food Science and Technology, BK21 Education and Research Center for Advanced Bio-Agriculture Technology, Chungbuk National University, Cheongju, 361-763, Republic of Korea.
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