Occurrence in soybeans of a novel vitamin B6 conjugate that liberates pyridoxine by beta-glucosidase action after alkali treatment
1999
Tadera, K. (Kagoshima Univ. (Japan). Faculty of Agriculture) | Oda, K. | Nakahara, C.
A type of vitamin B6 conjugates (B6X), which liberates free vitamin B6 by alkaline and successive beta-glucosidase hydrolyses, is known to occur in rice bran and wheat bran. Conflicting experimental results, however, have been reported about the occurrence of B6X h Soybeans. This study afforded evidence for B6X occurring in soybeans: certainly a highly purified B6X preparation from whole soybeans liberated pyridoxine when it was treated with alkali followed by beta-glucosidase hydrolysis, and 5'-0-(beta-D-glucopyranosyl)pyridoxine by alkali treatment alone. The R6X content varied with cultivars, of which a certain kind contained no B6X
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