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Polyphenolic profile characterization of Agrimonia eupatoria L. by HPLC with di...
Correia, Helena; González-Paramás, Ana; Amaral, Maria Teresa; Santos-Buelga, Celestino; Batista, Maria TeresaLiquid chromatography coupled to diode array and electrospray ionization mass spectrometry detection was used to establish the polyphenolic profile of an ethyl acetate fraction from Agrimonia eupatoria L. aqueous-alcoholic extract. Additionally, an HPLC technique with post-column derivatization by p-dimethylaminocinnamaldehyde was employed for the selective detection and quantification of flavan-3-ols. Importan...
Characterisation of polyphenols by HPLC-PAD-ESI/MS and antioxidant activity in ...
Correia, Helena; González-Paramás, Ana; Amaral, Maria Teresa; Santos-Buelga, Celestino; Batista, Maria TeresaThe antioxidant activity of an aqueous extract (infusion) and respective ethyl acetate fraction of Equisetum telmateia Ehrh. (Equisetaceae), a plant used in traditional medicine for its anti-inflammatory and diuretic properties, has been evaluated by DPPH, TEAC and TBARS assays. A high and significant antioxidant activity was detected in the ethyl acetate fraction. Analysis of the aqueous extract and the ethyl ...
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