Analysis of Antioxidative Phenolic Compounds in Artichoke (Cynara scolymus L.)

Artichoke leaf is an herbal medicine known for a long time. A systematic antioxidant activity-directed fractionation procedure was used to purify antioxidative components from the aqueous methanol extractions of artichoke heads and leaves in this study. Seven active polyphenolic compounds were purif...

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Published in:Journal of agricultural and food chemistry Vol. 51; no. 3; pp. 601 - 608
Main Authors: Wang, Mingfu, Simon, James E, Aviles, Irma Fabiola, He, Kan, Zheng, Qun-Yi, Tadmor, Yaakov
Format: Journal Article
Language:English
Published: Washington, DC American Chemical Society 29-01-2003
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Summary:Artichoke leaf is an herbal medicine known for a long time. A systematic antioxidant activity-directed fractionation procedure was used to purify antioxidative components from the aqueous methanol extractions of artichoke heads and leaves in this study. Seven active polyphenolic compounds were purified from artichoke, and structural elucidation of each was achieved using MS and NMR. Two of these compounds, apigenin-7-rutinoside and narirutin, were found to be unique to artichoke heads, this represents the first report of these compounds in the edible portion of this plant. The contents of these antioxidants and total phenols in dried artichoke samples from leaves and immature and mature heads of three varieties, Imperial Star, Green Globe, and Violet, were then analyzed and compared by colorimetric and validated HPLC methods. Significant differences by variety and plant organ were observed. Keywords: Artichoke; Cynara scolymus L.; phenolic compounds; caffeoylquinic acids; flavonoids; antioxidant activity; apigenin-7-rutinoside; narirutin
Bibliography:istex:831ED6B2DD9FD571811E3AB3AF3B75FC76AFAC60
ark:/67375/TPS-0GP07J8J-F
ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0021-8561
1520-5118
DOI:10.1021/jf020792b