Add time:08/21/2019         Source:sciencedirect.com

The recent advances in microbial biotechnology of production of bile acid metabolites helped to identify a number of neutral and acidic steroidal compounds useful as drugs and drug intermediates on a scale which would not have been possible by classical chemical transformations. Microbial transformations viz., hydroxylation, dehydroxylation, reduction of the carbonyl moieties, epimerization, side-chain metabolism, introduction of carbon-carbon double bonds into the steroid nucleus, deconjugation of bile acid conjugates carried out by various microorganisms for production of useful metabolites with special reference to newer techniques including cell immobilization and transposon mutagenesis for selective transformations are reviewed. The different pathways of microbial degradation of bile acids leading to the formation of various products are discussed. A compilation of the metabolites formed by various microorganisms from the bile acids or their conjugates and reported during the period 1979–1992 is also provided.

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