| Alcohol and acid formation during the anaerobic decomposition of propylene glycol under methanogenic conditions. | |
| | |
MedLine Citation:
|
PMID: 9821256 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Intermediates formed during the anaerobic decomposition of propylene glycol under methanogenic conditions were studied using a serum bottle technique. The pathway is similar to the anaerobic decomposition of ethylene glycol as previously reported. For both compounds, the decomposition is believed to proceed via an initial disproportionation of the glycol to form equal molar amounts of the volatile fatty acid and normal alcohol of the same chain length. In the case of ethylene glycol, disproportionation results in the formation of acetate and ethanol, while disproportionation of propylene glycol produces propionate and n-propanol. Following disproportionation, the alcohols produced from glycol fermentation are oxidized to their corresponding volatile fatty acid with the reduction of protons to form hydrogen. Ethanol and propionate oxidation to acetate proceeds via a well-established syntrophic pathway that is favorable only under low hydrogen partial pressures. Subsequent degradation of acetate proceeds via acetoclastic methanogenesis with the production of carbon dioxide and methane. Despite the production of hydrogen in the initial steps of glycol degradation, both compounds are completely degradable under the methanogenic conditions tested in this study. |
| | |
Authors:
|
S Veltman; T Schoenberg; M S Switzenbaum |
Related Documents
:
|
7484936 - Contribution of fiber and resistant starch to metabolizable energy. 23544586 - A heparin-like compound isolated from a marine crab rich in glucuronic acid 2-o-sulfate... 20018506 - Effects of dilute acid pretreatment conditions on enzymatic hydrolysis monomer and olig... 11015496 - Fermentation by gut microbiota cultured in a simulator of the human intestinal microbia... 18600666 - Prediction of effects of amino acid supplementation on growth of e. coli b/r. 8199696 - Effects of pravastatin and ursodeoxycholic acid on cholesterol and bile acid metabolism... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Biodegradation Volume: 9 ISSN: 0923-9820 ISO Abbreviation: Biodegradation Publication Date: 1998 |
Date Detail:
|
Created Date: 1998-12-09 Completed Date: 1998-12-09 Revised Date: 2006-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 9100834 Medline TA: Biodegradation Country: NETHERLANDS |
Other Details:
|
Languages: eng Pagination: 113-8 Citation Subset: IM |
Affiliation:
|
Department of Civil & Environmental Engineering University of Massachusetts, Amherst, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Acids
/
metabolism* Alcohols / metabolism* Anaerobiosis Biodegradation, Environmental Carbon Dioxide / metabolism Chromatography, Gas Methane / metabolism Propylene Glycol / metabolism* Stereoisomerism |
| Chemical | |
Reg. No./Substance:
|
0/Acids; 0/Alcohols; 124-38-9/Carbon Dioxide; 57-55-6/Propylene Glycol; 74-82-8/Methane |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Biodegradation of N-methylmorpholine-N-oxide.
Next Document: Isopropylbenzene catabolic pathway in Pseudomonas putida RE204: nucleotide sequence analysis of the ...