Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/56393
Type: Artigo de periódico
Title: Comprehensive analysis of Ginkgo tablets by easy ambient sonic spray ionization mass spectrometry
Author: Borges, EM
Volmer, DA
Eberlin, MN
Abstract: We report here that easy ambient sonic spray ionization - mass spectrometry (EASI-MS) allowed direct, rapid, and comprehensive analysis of active components (e. g., terpenetrilactones and intact flavonol glycosides) in Ginkgo tablets. Unlike conventional methods that hydrolyze flavonol glycosides to flavonoids prior to analysis, EASI-MS detects intact flavonol glycosides directly from the tablets enabling differentiation of these natural glycosides from the synthetic flavonoids. Adulteration of Ginkgo tablets is therefore readily recognized in less than 10 s measurement time. Sample preparation is simple and requires only 0.5 mL of methanol and a mortar and pestle. Additionally, no reference standards are needed and a comparison is made to a certified Ginkgo tablet. To demonstrate these abilities, 22 commercial Ginkgo tablets were analyzed by EASI-MS. The data revealed large variations of ingredients and strong deviations from the specified Ginkgo extract levels. These results emphasize the importance of monitoring Ginkgo products using appropriate methodologies as suggested in our work. The technique may replace more demanding LC-MS/MS methods, which can achieve comparable results but are considerably more labor-intensive. Importantly, the presented method is cheaper, faster, and much simpler to operate than chromatography-based mass spectrometric techniques.
Subject: easy ambient sonic spray ionization - mass spectrometry (EASI-MS)
flavonol glycosides
Ginkgo biloba
terpenetrilactones
Ginkgo tablet adulteration
Country: Canadá
Editor: Canadian Science Publishing, Nrc Research Press
Rights: fechado
Identifier DOI: 10.1139/cjc-2013-0037
Date Issue: 2013
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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