期刊
FOOD CHEMISTRY
卷 139, 期 1-4, 页码 762-769出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2013.01.051
关键词
Flower buds of Panax notoginseng; Liquid chromatography/mass spectrometry; Notoginseng saponins; Chemical profiling
资金
- Program for New Century Excellent Talents in University from China Ministry of Education [BMU20110269]
The flower buds of Panax notoginseng (Notoginseng flower, FBP) are used as the traditional Chinese medicine San-Qi-Hua. In this study, we conducted column chromatography fractionation and liquid chromatography/mass spectrometry (LC/MS) analysis to comprehensively profile bioactive notoginseng saponins (ginsenosides) in FBP. MCI gel column chromatography allowed separation and enrichment of minor saponins. Electrospray ionization tandem mass spectrometry of [M-H](-) and [M+Na](+) precursor ions of the saponins provided reliable structural information for the sapogenin, and sequence of sugar chains. Confirmed by high-accuracy Q-TOF analysis, 170 notoginseng saponins were characterized from FBP, and 91 of them were reported from Panax species for the first time. The new ginsenosides contain acyl groups on alpha-chain, malonyl group at 20-OH, or di-malonyl groups. This study also indicated that the flower buds of P. notoginseng contained more protopanaxadiol-type but less protopanaxatriol-type ginsenosides than the roots. (C) 2013 Elsevier Ltd. All rights reserved.
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