Impurity in a common growth medium component: presence of an isoflavonoid in samples of L-asparagine.
An impurity, present in some samples of l-asparagine, gave genistein on acid hydrolysis. The contaminant (probably the glucoside of genistein) was metabolized by Mycobacterium phlei to genistein and prunetin.
D000085:Acetates; D001216:Asparagine / Q000032:analysis* / Q000378:metabolism; D002247:Carbon Isotopes; D002855:Chromatography, Thin Layer; D003470:Culture Media; D005419:Flavonoids / Q000302:isolation & purification*; D009161:Mycobacterium / Q000254:growth & development / Q000378:metabolism
D000085:Acetates; D002247:Carbon Isotopes; D003470:Culture Media; D005419:Flavonoids; D001216:Asparagine