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Triterpene saponins from debittered quinoa (Chenopodium quinoa) seeds
- Zhu, N., Sheng, S., Sang, S., Jhoo, J.W., Bai, N., Karwe, M.V., Rosen, R.T., Ho, C.T.
- Journal of agricultural and food chemistry 2002 v.50 no.4 pp. 865-867
- Chenopodium quinoa, seeds, triterpenoid saponins, chemical structure, nuclear magnetic resonance spectroscopy, bitterness
- Twelve triterpene saponins have been isolated from the debittered seeds of quinoa (Chenopodium quinoa), and their structures were characterized on the basis of hydrolysis and spectral data, especially NMR evidence. Among them, three compounds, including 3-O-beta-D-glucuropyranosyl oleanolic acid (1), 3-O-beta-D-glucopyranosyl-(1 leads to 3)-alpha-L-arabinopyranosyl hederagenin (2), and the new compound 3-O-beta-D-glucopyranosyl-(1 leads to 3)-alpha-L-arabinopyranosyl-30-O-methyl spergulagenate 28-O-beta-D-glucopyranosyl ester (3), are identified for the first time from quinoa seeds. The other isolated saponins have been previously reported in quinoa.