PMID: 22586992May 17, 2012Paper

Biosynthesis of geosmin and 2-methylisoborneol in the prokaryotes--a review

Wei sheng wu xue bao = Acta microbiologica Sinica
Ting ZhangJie Li

Abstract

The occurrence of off-flavor problems caused by prokaryotes cyanobacteria and actinomycetes is a worldwide water and food quality issue. Based on literatures on two earthy-muddy-smelling metabolites, (i. e., geosmin and 2-methylisoborneol (2-MIB)), we reviewed their chemical characteristics, biosynthetic pathways, genes and enzymes that are involved in biosynthesis. Then we discussed current research questions related to off-flavor and future directions. Finally, we addressed the significance of probable key regulatory mechanism for the production and release of geosmin and 2-MIB, which could provide more scientific strategies to better control off-flavors outbreaks in drinking and aquaculture water.

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