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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Comprehensive analysis of Ginkgo tablets by easy ambient sonic spray ionization mass spectrometry

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Author(s):
Borges, Endler Marcel [1] ; Volmer, Dietrich A. [2] ; Eberlin, Marcos N. [1]
Total Authors: 3
Affiliation:
[1] Univ Estadual Campinas, Inst Quim, Lab ThoMSon Espectrometria Massas, BR-13083970 Campinas, SP - Brazil
[2] Univ Saarland, Inst Bioanalyt Chem, D-66123 Saarbrucken - Germany
Total Affiliations: 2
Document type: Journal article
Source: Canadian Journal of Chemistry; v. 91, n. 8, p. 671-678, AUG 2013.
Web of Science Citations: 4
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. (AU)

FAPESP's process: 11/07466-0 - Determination of avermectins, milbemycins and amphenicols in fish filet: using LC-MS/MS
Grantee:Endler Marcel Borges de Souza
Support Opportunities: Scholarships in Brazil - Post-Doctoral