Microbial Metabolism of Quinoline and Related Compounds. IV. Degradation of Isoquinoline byAlcaligenes faecalisPa andPseudomonas diminuta7

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Abstract
From sewage and soil isoquinoline-degrading organisms were enriched. Two strains could be isolated which were able to utilize isoquinoline as sole carbon source. The bacteria were tentatively identified as Alcaligenes faecalis and Pseudomonas diminuta with respect to their morphological and physiological characters. When growing on isoquinoline both strains excrete a metabolite into the medium which was identified as 1-oxo-1,2-dihydroisoquinoline. Alcaligenes faecalis was cultivated in continuous culture on 1-oxo-1,2-dihydroisoquinoline to improve growth on isoquinoline and degradative activity.

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