| Potent antioxidant and radical-scavenging activity of Chenpi--compensatory and cooperative actions of ascorbic acid and citric acid. | |
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MedLine Citation:
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PMID: 20000005 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Dried peels of Satsuma mandarin (Citrus unshiu Marcov.) have been used as traditional Chinese and Japanese medicine, which are called 'Chenpi'. In our present study, cold and hot water extracts of Chenpi exhibited a strong inhibitory activity against linoleic acid peroxidation and 1,1-diphenyl-2-picryl-hydrazyl (DPPH) radical-scavenging activity compared with o-methanol extract. When these extracts were separated into ethanol-soluble(ES) and ethanol-precipitable fractions, the dominant antioxidant and radical-scavenging activities were detected in the ES fractions, which suggests that these antioxidant and radical-scavenging activities are responsible for water-soluble and low-molecular-weight substances. As possible active principles for antioxidant activities in the water extracts, the contents of ascorbic acid and citric acid in these extracts were measured, and the antioxidant and radical-scavenging activities of these substances were assayed at various concentrations. The experimental results indicate that the antioxidant activity against lipid peroxidation in the water extracts is dominantly associated with citric acid, and the DPPH radical-scavenging activity of the water extracts is majorly responsible for ascorbic acid, suggesting a compensatory action of ascorbic acid and citric acid in expression of the antioxidant and radical-scavenging activities of Chenpi. |
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Authors:
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Kiyoka Higashi-Okai; Akiko Ishikawa; Sayuri Yasumoto; Yasuji Okai |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of UOEH Volume: 31 ISSN: 0387-821X ISO Abbreviation: J. UOEH Publication Date: 2009 Dec |
Date Detail:
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Created Date: 2009-12-16 Completed Date: 2010-02-25 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7909645 Medline TA: J UOEH Country: Japan |
Other Details:
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Languages: eng Pagination: 311-24 Citation Subset: IM |
Affiliation:
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Department of Food and Nutritional Environment, College of Human Life Environment, Kinjo Gakuin University, Moriyanma-Ku, Nagoya 463-8521, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Antioxidants* Ascorbic Acid / analysis*, pharmacology* Citric Acid / analysis*, pharmacology* Citrus / chemistry* Depression, Chemical Drug Synergism Drugs, Chinese Herbal* Free Radical Scavengers* Linoleic Acid Lipid Peroxidation / drug effects |
| Chemical | |
Reg. No./Substance:
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0/Antioxidants; 0/Drugs, Chinese Herbal; 0/Free Radical Scavengers; 2197-37-7/Linoleic Acid; 50-81-7/Ascorbic Acid; 77-92-9/Citric Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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