期刊
FOOD CHEMISTRY
卷 131, 期 1, 页码 318-327出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2011.07.118
关键词
Adesmia emarginata; Escallonia illinita; Linum chamissonis; Quinchamalium chilensis; Mapuche medicinal plants; Antioxidant; Phenolics; High performance liquid chromatography; Electrospray ionisation-mass spectrometry
资金
- CONICET (Argentina) [ACT-38]
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.
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