Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/15126
DC FieldValueLanguage
dc.contributorDepartment of Applied Biology and Chemical Technology-
dc.creatorLai, YH-
dc.creatorSo, PK-
dc.creatorLo, SCL-
dc.creatorNg, EWY-
dc.creatorPoon, TCW-
dc.creatorYao, ZP-
dc.date.accessioned2015-06-23T09:11:44Z-
dc.date.available2015-06-23T09:11:44Z-
dc.identifier.issn0003-2670-
dc.identifier.urihttp://hdl.handle.net/10397/15126-
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.subjectMALDI-MSen_US
dc.subjectDifferentiationen_US
dc.subjectHerbal medicineen_US
dc.subjectPanax ginsengen_US
dc.subjectPanax quinquefoliusen_US
dc.titleRapid differentiation of Panax ginseng and Panax quinguefolius by matrix-assisted laser desorption/ionization mass spectrometryen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage73-
dc.identifier.epage81-
dc.identifier.volume753-
dc.identifier.doi10.1016/j.aca.2012.09.047-
dcterms.abstractA matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS)-based method has been developed for rapid differentiation between Panax ginseng and Panax quinquefolius, two herbal medicines with similar chemical and physical properties but different therapeutic effects. This method required only a small quantity of samples, and the herbal medicines were analyzed by MALDI-MS either after a brief extraction step, or directly on the powder form or small pieces of raw samples. The acquired MALDI-MS spectra showed different patterns of ginsenosides and small chemical molecules between P. ginseng and P. quinquefolius, thus allowing unambiguous differentiation between the two Panax species based on the specific ions, intensity ratios of characteristic ions or principal component analysis. The approach could also be used to differentiate red ginseng or P. quinquefolius adulterated with P. ginseng from pure P. ginseng and pure Panax quinquefolium. The intensity ratios of characteristic ions in the MALDI-MS spectra showed high reproducibility and enabled quantitative determination of ginsenosides in the herbal samples and percentage of P. quinquefolius in the adulterated binary mixture. The method is simple, rapid, robust, and can be extended for analysis of other herbal medicines.-
dcterms.bibliographicCitationAnalytica chimica acta, 2012, v. 753, p. 73-81-
dcterms.isPartOfAnalytica chimica acta-
dcterms.issued2012-
dc.identifier.isiWOS:000311063100010-
dc.identifier.rosgroupidr62899-
dc.description.ros2012-2013 > Academic research: refereed > Publication in refereed journal-
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