Biodegradation of ortho-cresol by a mixed culture of nitrate-reducing bacteria growing on toluene

Article Abstract:

The toluene-dependent degradation of o-cresol by nitrate-reducing bacteria was investigated. The results showed that o-cresol is metabolized only when about 0.5 to 1.0 mg/l of toluene has been degraded. About 73% of the carbon from o-cresol is converted to carbon dioxide and 23% was assimilated into biomass. These results indicate that o-cresol is degraded by a cometabolic reaction in which toluene acts as an inducer of o-cresol-degrading enzymes. Based on the results, a mathematical model describing the kinetics of o-cresol degradation is presented.

Models, Physiological aspects, Microbial metabolism, Toluene, Cresol, Cresols

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Engineering of stable recombinant bacteria for production of chiral medium-chain-length poly-3-hydroxyalkanoates

Article Abstract:

Researchers describe using recombinant bacteria to produce poly-3-hydroxyalkanoates (PHA). PHA are of interest because they could be used as biodegradable plastics. The molecular weight of the PHA can be varied by varying the level of the inducer.

Research, Plastics, Genetically modified organisms

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