| Profiling and characterization antioxidant activities in Anoectochilus formosanus hayata. | |
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MedLine Citation:
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PMID: 11902924 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Phytochemical characteristics and antioxidant activities of the crude and fractionated plant extracts of Anoectochilus formosanus were evaluated using five different assay systems. An acid-treatment (2 N HCl in 95% ethanol) was employed to treat a butanol fraction (BuOH), creating an acid-hydrolyzed BuOH fraction. The IC(50) values for DPPH radicals in the BuOH and acid-hydrolyzed BuOH fractions were 0.521 and 0.021 mg/mL, respectively. The acid-hydrolyzed BuOH exhibited approximately 5-fold higher activity in scavenging superoxide anion than catechin. The acid-hydrolyzed BuOH fraction also effectively protected phi x174 supercoiled DNA against strand cleavage induced by H(2)O(2) and reduced oxidative stress in HL-60 cells. Metabolite profiling showed that the aglycones of flavonoid glycosides in BuOH were produced after acid hydrolytic treatment, and this resulted in a significant increase in antioxidant activities of acid-hydrolyzed BuOH. One new diarylpentanoid, kinsenone, and three known flavonoid glycosides and their derivatives were identified for the first time from A. formosanus, with strong antioxidant properties. |
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Authors:
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Sheng-Yang Wang; Yueh-Hsiung Kuo; Hsing-Ning Chang; Pei-Ling Kang; Hsin-Sheng Tsay; Ku-Feng Lin; Ning-Sun Yang; Lie-Fen Shyur |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of agricultural and food chemistry Volume: 50 ISSN: 0021-8561 ISO Abbreviation: J. Agric. Food Chem. Publication Date: 2002 Mar |
Date Detail:
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Created Date: 2002-03-20 Completed Date: 2002-05-17 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0374755 Medline TA: J Agric Food Chem Country: United States |
Other Details:
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Languages: eng Pagination: 1859-65 Citation Subset: IM |
Affiliation:
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Institute of BioAgricultural Sciences, Academia Sinica, Taipei 115, Taiwan, R.O.C. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Antioxidants
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analysis* Bacteriophage phi X 174 / genetics Butanols Catechin / pharmacology DNA, Superhelical / drug effects DNA, Viral / drug effects Free Radical Scavengers HL-60 Cells Humans Hydrogen Peroxide / pharmacology Hydrogen-Ion Concentration Hydrolysis Hydroxyl Radical / pharmacology Lipid Peroxidation / drug effects Orchidaceae / chemistry* Oxidative Stress Plant Extracts / analysis*, chemistry Superoxides |
| Chemical | |
Reg. No./Substance:
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0/Antioxidants; 0/Butanols; 0/DNA, Superhelical; 0/DNA, Viral; 0/Free Radical Scavengers; 0/Plant Extracts; 11062-77-4/Superoxides; 154-23-4/Catechin; 3352-57-6/Hydroxyl Radical; 7722-84-1/Hydrogen Peroxide |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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