Document Type

Journal Article

Department/Unit

Department of Biology

Title

Comparative analysis of caffeoylquinic acids and lignans in roots and seeds among various burdock (Arctium lappa) genotypes with high antioxidant activity

Language

English

Abstract

Caffeoylquinic acids and lignans in the crude extracts of both roots and seeds from different burdock (Arctium lappa L.) genotypes were simultaneously characterized and systematically compared by LC-MS and matrix-assisted laser desorption/ionization quadrupole ion trap time-of-flight mass spectrometry (MALDI-QIT-TOF MS), and their antioxidant activities were also investigated. A total of 14 lignans were identified in burdock seeds and 12 caffeoylquinic acids in burdock roots. High levels of caffeoylquinic acids were also detected in burdock seeds, but only trace amounts of lignans were found in burdock roots. Burdock seeds contained higher concentrations of lignans and caffeoylquinic acids than burdock roots. Quantitative analysis of caffeoylquinic acids and lignans in roots and seeds of various burdock genotypes was reported for the first time. Great variations in contents of both individual and total phenolic compounds as well as antioxidant activities were found among different genotypes. Burdock as a root vegetable or medicinal plants possessed considerably stronger antioxidant activity than common vegetables and fruits. © 2012 American Chemical Society.

Keywords

antioxidant activity, burdock, caffeoylquinic acids, LC-MS, lignans, MALDI-QIT-TOF MS, roots, seeds

Publication Date

2012

Source Publication Title

Journal of Agricultural and Food Chemistry

Volume

60

Issue

16

Start Page

4067

End Page

4075

Publisher

American Chemical Society

DOI

10.1021/jf2050697

Link to Publisher's Edition

http://dx.doi.org/10.1021/jf2050697

ISSN (print)

00218561

ISSN (electronic)

15205118

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