Dehydration of the off-flavor chemical 2-methylisoborneol by the R-limonene-degrading bacteria Pseudomonas sp. strain 19-rlim and Sphingomonas sp. strain BIR2-rlima.

Abstract

The terpene 2-methylisoborneol (MIB), a major cause of off-flavor in farm-raised catfish and drinking water, is transformed by various different terpene-degrading bacteria. Two of these, the R-limonene-degrading strains Pseudomonas sp. 19-rlim and Sphingomonas sp. BIR2-rlima, dehydrated MIB with the formation of odorless metabolites 2-methylenebornane and 4-methylcamphene. These metabolites which have a structural resemblance to camphor, could be further transformed by camphor-degrading bacteria to more oxidized products. The bacterial dehydrations demonstrated here may have application in removing MIB where it is a problem.

• Authors: Richard W Eaton
• Journal: Biodegradation (Biodegradation) Vol. 23 Issue 2 Pg. 253-61 (Apr 2012) ISSN: 1572-9729 [Electronic] Netherlands
• PMID: 21842206 (Publication Type: Journal Article)

Chemical References

• Acids
• Camphanes
• Cyclohexenes
• Terpenes
• 2-methylisoborneol
• Camphor
• Limonene

Topics

• Acids
• Biodegradation, Environmental (drug effects)
• Biotransformation (drug effects)
• Camphanes (chemistry, metabolism)
• Camphor (pharmacology)
• Catalysis (drug effects)
• Cyclohexenes (chemistry, metabolism)
• Limonene
• Mass Spectrometry
• Odorants (analysis)
• Oxidation-Reduction (drug effects)
• Pseudomonas (drug effects, metabolism)
• Sphingomonas (drug effects, metabolism)
• Terpenes (chemistry, metabolism)