Studies on Oligosaccharides from Acanthopanax Senticosus Harms (AS) by Electrospray Ionization Tandem Mass Spectrometry(MSn)

Abstract

Abstract: Aseries of oligosaccharide mixtures from extracts of Acanthopanax senticosus Harms(AS) were determined in both the positive ion mode and negative ion mode of electrospray ionization tandem mass spectrometry. In the positive ion mode, the ions observed are characteristic of cluster ions with a mass difference of 16, and they are considered as the alkali adducts of [M+Na]⁺/[M+K]⁺or [M+H₂O+Na]⁺/[M+H₂O+K]⁺. In the negative ion mode, the ions observed are deprotonated oligosaccharides like [M-H]^-or [M+H₂O-H]^-. MS" experiments of trisaccharides were performed in both the positive and negative ion modes to highlight the application of ESI-MSⁿto the structure analyses of oligosaccharides.

Key words: Acanthopanax senticosus, Oligosaccharide, Electrospray ionization tandem mass spectrometry

CLC Number:

O657

TrendMD:

GUO Ming-Quan, SONG Feng-Rui, CHEN Mao-Lian, BAI Yu, LIU Zhi-Qiang, LIU Shu-Ying . Studies on Oligosaccharides from Acanthopanax Senticosus Harms (AS) by Electrospray Ionization Tandem Mass Spectrometry(MSⁿ)[J]. Chem. J. Chinese Universities, 2003, 24(9): 1577.

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Studies on Oligosaccharides from Acanthopanax Senticosus Harms (AS) by Electrospray Ionization Tandem Mass Spectrometry(MSⁿ)

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