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Please use this identifier to cite or link to this item: http://dspace.utalca.cl/handle/1950/9055

Title: Direct characterisation of phenolic antioxidants in infusions from four Mapuche medicinal plants by liquid chromatography with diode array detection (HPLC-DAD) and electrospray ionisation tandem mass spectrometry (HPLC-ESI-MS)
Authors: Simirgiotis, M.J.
Silva, M.
Becerra, J.
Schmeda-Hirschmann, G.
Keywords: Adesmia emarginata
Escallonia illinita
Linum chamissonis
Quinchamalium chilensis
Mapuche medicinal plants
High performance liquid chromatography
Electrospray ionisation-mass spectrometry
Issue Date: Mar-2012
Citation: FOOD CHEMISTRY Volume: 131 Issue: 1 Pages: 318-327
Abstract: A simple, fast and direct method was developed for the qualitative analysis of phenolic constituents from infusions of Mapuche medicinal plants. Teas made of Linum chamissonis Schiede, Quinchamalium chilensis Mol., Adesmia emarginata Clos. and Escallonia illinita K. Presl. were analysed by high-performance liquid chromatography with diode array detector (HPLC-DAD) and electrospray mass spectrometry (ESI-MS). This technique allowed for the first time the tentative identification of 16 phenolic compounds in E. illinita, 27 in Q. chilensis, 10 in L chamissonis and 19 in A. emarginata. The compounds were mainly phenolic acids, flavonoid glycosides, anthocyanins and tannins. The total phenolic and flavonoid content of the infusions was assessed as well as the free radical scavenging capacity measured by the bleaching of a solution of the 2,2-diphenyl-1-picrylhydrazyl (DPPH(-)) radical. From the four species, Q. chilensis exhibited the strongest antioxidant activity with highest total phenolic and flavonoid content. (C) 2011 Elsevier Ltd. All rights reserved
Description: Schmeda-Hirschmann, G (reprint author), Univ Talca, Lab Quim Prod Nat, Inst Quim Recursos Nat, Casilla 747, Talca, Chile.
URI: http://dspace.utalca.cl/handle/1950/9055
Appears in Collections:Artículos en publicaciones ISI - Universidad de Talca

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