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Microbiological degradation of quinoline by Pseudomonas stutzeri: the coumarin pathway of quinoline catabolism.

Microbios (1989-01-01)
O P Shukla
ABSTRACT

A Gram-negative, oxidase positive, polar flagellated rod, characterised as Pseudomonas stutzeri, has been isolated from sewage by enrichment culture on quinoline. The organism utilizes quinoline as the sole source of carbon, nitrogen and energy, and liberates UV absorbing and phenolic metabolites during its growth on quinoline. 2-Hydroxyquinoline, 2,8-dihydroxyquinoline, 8-hydroxycoumarin and 2,3-dihydroxyphenylpropionic acid have been isolated as the transformation products of quinoline by this bacterium. Quinoline, 2-hydroxyquinoline, and 8-hydroxycoumarin were rapidly oxidised by quinoline-adapted cells; 2,3-dihydroxyphenylpropionic acid oxidation was also demonstrated by Warburg respirometry but 2,8-dihydroxyquinoline was not oxidised. A pathway for quinoline catabolism by P. stutzeri and the probable mechanisms for formation of 8-hydroxycoumarin are suggested.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
2,8-Quinolinediol, ≥99.0% (HPLC)

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