TY - JOUR
T1 - Soybean Isoflavones. Characterization, Determination, and Antifungal Activity
AU - Naim, Michael
AU - Gestetner, Benjamin
AU - Zilkah, Shmuel
AU - Birk, Yehudith
AU - Bondi, Aron
PY - 1974/9/1
Y1 - 1974/9/1
N2 - The isolation and separation of defatted soybean meal isoflavone glycosides by chelation with aluminum oxide and subsequent chromatography on polyamide columns have been described. A procedure for the quantitative determination via gas chromatography of isoflavones in soybean meal was elaborated. The resulting analytical data showed that the content of isoflavones in soybeans amounts to 0.25% and that 99% of the isoflavones are present as glycosides: 64% genistin, 23% daidzin, and 13% glycitein 7-O-β-glycoside. Soybean oil does not contain isoflavones. The growth depression of Trichoderma lignorum, Rhizoctonia solani, Fusarium oxysporum, Pythium spp, Rhizopus spp, and Sclerotium rolfsii exerted by soybean isoflavones is due mainly to the presence of free isoflavones in the growth medium, while the activity of the glycosides is in most instances negligible.
AB - The isolation and separation of defatted soybean meal isoflavone glycosides by chelation with aluminum oxide and subsequent chromatography on polyamide columns have been described. A procedure for the quantitative determination via gas chromatography of isoflavones in soybean meal was elaborated. The resulting analytical data showed that the content of isoflavones in soybeans amounts to 0.25% and that 99% of the isoflavones are present as glycosides: 64% genistin, 23% daidzin, and 13% glycitein 7-O-β-glycoside. Soybean oil does not contain isoflavones. The growth depression of Trichoderma lignorum, Rhizoctonia solani, Fusarium oxysporum, Pythium spp, Rhizopus spp, and Sclerotium rolfsii exerted by soybean isoflavones is due mainly to the presence of free isoflavones in the growth medium, while the activity of the glycosides is in most instances negligible.
UR - http://www.scopus.com/inward/record.url?scp=0016110006&partnerID=8YFLogxK
U2 - 10.1021/jf60195a031
DO - 10.1021/jf60195a031
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C2 - 4472691
AN - SCOPUS:0016110006
SN - 0021-8561
VL - 22
SP - 806
EP - 810
JO - Journal of Agricultural and Food Chemistry
JF - Journal of Agricultural and Food Chemistry
IS - 5
ER -