Distributions of Saponin Constituents in Some Varieties of Soybean Plant

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Abstract
Saponins are bioactive substances with physiological activities and bitter taste. We investigated the distributions of saponins in soybean plants. Acetyl-soyasaponins A1 and A4 occur only in seed hypocotyls of soybean plants. Soyasaponin I was detected in all organs of the plant. However, soyasaponin I levels in plant showed very heterogenous distributions, for example, stem and main root had very low soyasaponin I levels, but nodule and leaf had higher levels.

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