Phenolic Antioxidants from the Leaves of Corchorus olitorius L

Six phenolic antioxidative compounds [5-caffeoylquinic acid (chlorogenic acid), 3,5-dicaffeoylquinic acid, quercetin 3-galactoside, quercetin 3-glucoside, quercetin 3-(6-malonylglucoside), and quercetin 3-(6-malonylgalactoside) (tentative)] were identified from the leaves of Corchorus olitorius L. (...

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Bibliographic Details
Published in:Journal of agricultural and food chemistry 1999-10, Vol.47 (10), p.3963-3966
Main Authors: Azuma, Keiko, Nakayama, Masayoshi, Koshioka, Masaji, Ippoushi, Katsunari, Yamaguchi, Yuichi, Kohata, Katsunari, Yamauchi, Yuji, Ito, Hidekazu, Higashio, Hisao
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
alpha-tocopherol
Antioxidants - analysis
Antioxidants - isolation & purification
ascorbic acid
Biological and medical sciences
chemical constituents of plants
Chemical constitution
chemical structure
chlorogenic acid
Corchorus olitorius
Economic plant physiology
Food industries
Fruit and vegetable industries
Fundamental and applied biological sciences. Psychology
glycosides
Humans
identification
inhibition
leaves
linoleic acid
lipid peroxidation
Magnetic Resonance Spectroscopy
oxidation
phenolic compounds
Phenols - analysis
Phenols - isolation & purification
Plant Extracts - chemistry
Plant Leaves - chemistry
quercetin
Spectrometry, Mass, Fast Atom Bombardment
Vegetables - chemistry
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Summary:Six phenolic antioxidative compounds [5-caffeoylquinic acid (chlorogenic acid), 3,5-dicaffeoylquinic acid, quercetin 3-galactoside, quercetin 3-glucoside, quercetin 3-(6-malonylglucoside), and quercetin 3-(6-malonylgalactoside) (tentative)] were identified from the leaves of Corchorus olitorius L. (moroheiya) by NMR and FAB-MS. The contents of these phenolic compounds, ascorbic acid, and α-tocopherol in C. olitorius leaves were determined, and their antioxidative activities were measured using the radical generator-initiated peroxidation of linoleic acid. The results obtained showed that 5-caffeoylquinic acid was a predominant phenolic antioxidant in C. olitorius leaves. Keywords: Corchorus olitorius; antioxidants; phenolics; caffeoylquinic acid; quercetin glycosides
ISSN:0021-8561
1520-5118
DOI:10.1021/jf990347p