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Article: 2,2-Diphenyl-1-picrylhydrazyl radical-scavenging active components from Polygonum multiflorum Thunb.

Title2,2-Diphenyl-1-picrylhydrazyl radical-scavenging active components from Polygonum multiflorum Thunb.
Authors
Issue Date1999
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/jafcau
Citation
Journal Of Agricultural And Food Chemistry, 1999, v. 47 n. 6, p. 2226-2228 How to Cite?
AbstractAn activity-directed fractionation and purification process was used to identify the antioxidative components of Polygonum multiflorum Thunb. (PM). Dried root of PM was extracted with 95% ethanol and then separated into water, ethyl acetate, and hexane fractions. Among these only the ethyl acetate phase showed strong antioxidant activity by the 2,2-diphenyl-1- picrylhydrazyl (DPPH) test when compared with water and hexane phases. The ethyl acetate fraction was then subjected to separation and purification using silica gel column chromatography and Sephadex LH-20 chromatography. Three compounds showing strong antioxidant activity were identified by spectral methods ( 1H NMR, 13C NMR, and MS) and by comparison with authentic samples to be gallic acid, catechin, and 2,3,5,4'- tetrahydroxystilbene 2-O-β-D-glucopyranoside.
Persistent Identifierhttp://hdl.handle.net/10722/178649
ISSN
2015 Impact Factor: 2.857
2015 SCImago Journal Rankings: 1.246
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChen, Yen_US
dc.contributor.authorWang, Men_US
dc.contributor.authorRosen, RTen_US
dc.contributor.authorHo, CTen_US
dc.date.accessioned2012-12-19T09:48:56Z-
dc.date.available2012-12-19T09:48:56Z-
dc.date.issued1999en_US
dc.identifier.citationJournal Of Agricultural And Food Chemistry, 1999, v. 47 n. 6, p. 2226-2228en_US
dc.identifier.issn0021-8561en_US
dc.identifier.urihttp://hdl.handle.net/10722/178649-
dc.description.abstractAn activity-directed fractionation and purification process was used to identify the antioxidative components of Polygonum multiflorum Thunb. (PM). Dried root of PM was extracted with 95% ethanol and then separated into water, ethyl acetate, and hexane fractions. Among these only the ethyl acetate phase showed strong antioxidant activity by the 2,2-diphenyl-1- picrylhydrazyl (DPPH) test when compared with water and hexane phases. The ethyl acetate fraction was then subjected to separation and purification using silica gel column chromatography and Sephadex LH-20 chromatography. Three compounds showing strong antioxidant activity were identified by spectral methods ( 1H NMR, 13C NMR, and MS) and by comparison with authentic samples to be gallic acid, catechin, and 2,3,5,4'- tetrahydroxystilbene 2-O-β-D-glucopyranoside.en_US
dc.languageengen_US
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/jafcauen_US
dc.relation.ispartofJournal of Agricultural and Food Chemistryen_US
dc.subject.meshAntioxidants - Chemistry - Isolation & Purificationen_US
dc.subject.meshBepridil - Analogs & Derivatives - Chemistry - Isolation & Purificationen_US
dc.subject.meshBiphenyl Compoundsen_US
dc.subject.meshFree Radical Scavengers - Chemistry - Isolation & Purificationen_US
dc.subject.meshFree Radicalsen_US
dc.subject.meshPicratesen_US
dc.subject.meshPlant Rootsen_US
dc.subject.meshPlants, Medicinal - Chemistryen_US
dc.title2,2-Diphenyl-1-picrylhydrazyl radical-scavenging active components from Polygonum multiflorum Thunb.en_US
dc.typeArticleen_US
dc.identifier.emailWang, M: mfwang@hku.hken_US
dc.identifier.authorityWang, M=rp00800en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1021/jf990092fen_US
dc.identifier.pmid10794614-
dc.identifier.scopuseid_2-s2.0-0032782428en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0032782428&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume47en_US
dc.identifier.issue6en_US
dc.identifier.spage2226en_US
dc.identifier.epage2228en_US
dc.identifier.isiWOS:000080910800010-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridChen, Y=8600034500en_US
dc.identifier.scopusauthoridWang, M=7406691844en_US
dc.identifier.scopusauthoridRosen, RT=7202895150en_US
dc.identifier.scopusauthoridHo, CT=7404652573en_US

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