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.

Hyung-Hwan Park. Takashi Hakamatsuka, Ushio Sankawa, and Yutaka Ebizuka Faculty of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113, Japan Z. Naturforsch. 50c, 824-832 (1995); received July 25/September 26. 1995 Pueraria lobata, Isoflavonoids, Malonylglucosides, Elicitation, Oxidative Burst Hydrogenperoxide exogenously administerd to the suspension-cultured ce...

Isoflavonoids are a diverse group of biologically active natural products that accumulate in soybean seeds during development. The majority of isoflavonoids are accumulated in the form of their glyco- and malonyl-conjugates in soybean seeds. The conjugation step confers stability and solubility to isoflavone aglycones enabling their compartmentalization to vacuoles or transport to the site of a...