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Phenolic acids significantly contribute to antioxidant potency of Gynostemma pentaphyllum aqueous and methanol extracts
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SYSNO ASEP 0460067 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Phenolic acids significantly contribute to antioxidant potency of Gynostemma pentaphyllum aqueous and methanol extracts Author(s) Samec, D. (HR)
Valek-Zulj, L. (HR)
Martinez, S. (HR)
Grúz, Jiří (UEB-Q) RID, ORCID
Piljac, A. (HR)
Piljac-Žegarac, J. (HR)Source Title Industrial Crops and Products. - : Elsevier - ISSN 0926-6690
Roč. 84, JUN (2016), s. 104-107Number of pages 4 s. Language eng - English Country NL - Netherlands Keywords Gynostemma pentaphyllum ; Phenolic acids ; Mass spectrometry Subject RIV CE - Biochemistry R&D Projects GA14-34792S GA ČR - Czech Science Foundation (CSF) LO1204 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LK21306 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UEB-Q - RVO:61389030 UT WOS 000373538000015 DOI 10.1016/j.indcrop.2016.01.035 Annotation Cyclic voltammetry, as well as four well-established spectrophotometric and fluorimetric assays, were applied to study the contribution of phenolic compounds to the antioxidant capacity of aqueous and methanol extracts of Jiaogulan tea (Gynostemma pentaphyllum). In addition, individual phenolic acid profiles of G. pentaphyllum extracts, determined using UPLC MS/MS, were reported for the first time in this study. Methanol extraction resulted in higher contents of phenolic compounds, as well as antioxidant capacity of tested extracts. Our results suggest that G. pentaphyllum aqueous and methanol extracts have high antioxidant capacity and are rich in phenolic compounds, such as chlorogenic acid, which might play a role in the prevention of type 2 diabetes mellitus and cardiovascular disease. Workplace Institute of Experimental Botany Contact David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Year of Publishing 2017
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