Document Detail


Microbial production of conjugated gamma-linolenic acid from gamma-linolenic acid by Lactobacillus plantarum AKU 1009a.
MedLine Citation:
PMID:  19919619     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
AIMS: Optimal production conditions of conjugated gamma-linolenic acid (CGLA) from gamma-linolenic acid using washed cells of Lactobacillus plantarum AKU 1009a as catalysts were investigated.
METHODS AND RESULTS: Washed cells of Lact. plantarum AKU 1009a exhibiting a high level of CGLA productivity were obtained by cultivation in a nutrient medium supplemented with 0.03% (w/v) alpha-linolenic acid as an inducer. Under the optimal reaction conditions with 13 mg ml(-1)gamma-linolenic acid as a substrate in 5 -ml reaction volume, the washed cells [32% (wet cells, w/v) corresponding to 46 mg ml(-1) dry cells] as the catalysts produced 8.8 mg CGLA per millilitre reaction mixture (68% molar yield) in 27 h. The produced CGLA was a mixture of two isomers, i.e., cis-6,cis-9,trans-11-octadecatrienoic acid (CGLA1, 40% of total CGLA) and cis-6,trans-9,trans-11-octadecatrienoic acid (CGLA2, 60% of total CGLA), and accounted for 66% of total fatty acid obtained. The CGLA produced was obtained as free fatty acids adsorbed mostly on the surface of the cells of Lact. plantarum AKU1009a.
CONCLUSION: The practical process of CGLA production from gamma-linolenic acid using washed cells of Lact. plantarum AKU 1009a was successfully established.
SIGNIFICANCE AND IMPACT OF THE STUDY: We presented the first example of microbial production of CGLA. CGLA produced by the process is valuable for evaluating their physiological and nutritional effects, and chemical characteristics.
Authors:
S Kishino; J Ogawa; A Ando; K Yokozeki; S Shimizu
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-10-30
Journal Detail:
Title:  Journal of applied microbiology     Volume:  108     ISSN:  1365-2672     ISO Abbreviation:  J. Appl. Microbiol.     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-08-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9706280     Medline TA:  J Appl Microbiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  2012-8     Citation Subset:  IM    
Affiliation:
Division of Applied Life Sciences, Laboratory of Fermentation Physiology and Applied Microbiology, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, Japan.
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