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Keywords The isoflavone conjugate biochanin A-7-O-glucoside-6″-O-malonate is degraded by Fusarium javanicum with an esterase to yield biochanin A-7-O-glucoside which is further cleaved by a glucosidase to the aglycone. Biochanin A is funnelled into a known catabolic sequence (Z. Naturforsch. 37c, 861 (1982)). Induction of the catabolism of p-methoxyphenylacetic acid is linked to biochanin A degradation, whereas p-hydroxyphenylacetic acid and 3,4-dihydroxy- phenylacetic acid degradation is substrate-induced.

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