Document Detail

Production of 4-ethylphenol from 4-hydroxycinnamic acid by Lactobacillus sp. isolated from a swine waste lagoon.
MedLine Citation:
PMID:  20028439     Owner:  NLM     Status:  In-Process    
AIMS: To determine the source material and the responsible micro-organisms of 4-ethylphenol production in swine lagoon sediment slurries.
METHODS AND RESULTS: Swine lagoon sediment was blended and incubated with tryptone-yeast extract broth containing 10 mmol l(-1) each of 4-hydroxycinnamic as well as other phenolics. 4-Ethylphenol was only produced from 4-hydroxycinnamic acid. Denaturing gradient gel electrophoresis analysis indicated that the microbial community was substantially altered from inclusion of 4-hydroxycinnamic acid. Serial dilutions and selective plating were employed to isolate a culture capable of 4-hydroxycinnamic acid conversion to 4-ethylphenol. Morphological and ribosomal gene analysis indicated the isolate to be a Lactobacillus sp., Lactobacillus sp. pep8 converted 4-vinylphenol, but not 4-hydroxy-3-phenylpropionate, to 4-ethylphenol and did not convert 4-hydroxy-3-methoxycinnamic acid to 4-ethyl-2-methoxyphenol. A p-coumaric acid decarboxylase (pdc) gene identical to Lact. plantarum pdc genes was cloned from Lactobacillus sp. pep8.
CONCLUSIONS: Swine lagoon sediments produce 4-ethylphenol from 4-hydroxycinnamic acid due, in part, to the activity of Lactobacillus spp.
SIGNIFICANCE AND IMPACT OF THE STUDY: 4-Ethylphenol, a malodourant of swine and beef wastes, is generated from plant materials by indigenous lactobacilli suggesting that altering the amount dietary of plant material may influence levels of 4-ethylphenol in the wastes.
D Kridelbaugh; S Hughes; T Allen; K C Doerner
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2009-11-30
Journal Detail:
Title:  Journal of applied microbiology     Volume:  109     ISSN:  1365-2672     ISO Abbreviation:  J. Appl. Microbiol.     Publication Date:  2010 Jul 
Date Detail:
Created Date:  2010-10-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9706280     Medline TA:  J Appl Microbiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  190-8     Citation Subset:  IM    
Copyright Information:
Journal compilation © 2009 The Society for Applied Microbiology. No claim to original US Government works.
Department of Biology, Western Kentucky University, Bowling Green, KY 42101-1080, USA.
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MeSH Terms
Grant Support
2 P20 RR-16481/RR/NCRR NIH HHS

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