| Functional Characteristics of Lactobacillus fermentum F1. | |
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MedLine Citation:
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PMID: 20490496 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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In this study, Lactobacillus fermentum (L. fermentum) F1 reduced cholesterol 48.87%. The strain was screened from cattle feces using an API 50 CHL system and the 16S rRNA sequence contrasting method. L. fermentum F1 showed acid and bile tolerance, and antimicrobial activity against pathogenic Escherichia coli and Staphylococcus aureus. L. fermentum F1 deconjugated 0.186 mM of free cholalic acid after it was incubated at 37°C in 0.20% sodium taurocholate (TCA) broth for 24 h. Heat-killed and resting cells of L. fermentum F1 showed small amounts of cholesterol removal (6.85 and 25.19 mg/g, respectively, of dry weight) compared with growing cells (33.21 mg/g of dry weight). The supernatant fluid of the broth contained 50.85% of the total cholesterol, while the washing buffer and cell extracts had 13.53 and 35.39%, respectively. These findings suggest that L. fermentum F1 may remove cholesterol by co-precipitating with deconjugated bile salt, assimilating with cells and by incorporation into cellular membranes. Cholesterol assimilated by cells held 72.0% of the reduced cholesterol, while 21.65% of the reduced cholesterol was coprecipitated with deconjugated bile salt and 5.89% was adsorbed into the surface of the cells. |
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Authors:
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Xiao Qun Zeng; Dao Dong Pan; Pei Dong Zhou |
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Publication Detail:
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Type: Journal Article Date: 2010-05-19 |
Journal Detail:
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Title: Current microbiology Volume: 62 ISSN: 1432-0991 ISO Abbreviation: Curr. Microbiol. Publication Date: 2011 Jan |
Date Detail:
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Created Date: 2010-12-21 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7808448 Medline TA: Curr Microbiol Country: United States |
Other Details:
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Languages: eng Pagination: 27-31 Citation Subset: IM |
Affiliation:
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Life Science and Biotechnology College, Ningbo University, Ningbo, 315211, People's Republic of China. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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