Antioxidant capacity and polyphenolic content of twelve traditionally used herbal medicinal infusions from the South American Andes
Keywords: antioxidants, free radical scavengers, oxidative damage, herbal infusion, crocin assay
Abstract
Twelve plants used traditionally in ethno-medicine from the South American Andes were studied. Infusions were compared in terms of their free radical scavenger properties, using four different methods (AAPH-induced haemolysis, TEAC-DPPH, FRAP and TEAC-crocin). All herbal teas showed a strong antioxidant capacity, the results obtained with FRAP and TEAC-DPPH being very similar. When compared at a dilution of 0.03%, Parastrephia lucida, Parastrephia lepidophylla, Senecio nutans, Azorella compacta and Baccharis tola, showed a protective effect against oxidative damage on human erythrocytes greater than that of Trolox (p < 0.001). Upon correlating the polyphenolic contents with the antioxidant capacity a positive association for all plants (TEAC-DPPH vs GAE; r2 = 0.7437) was found. Interestingly, there was a better correlation between polyphenolic contents and the protective effect against APPH-induced haemolytic activity.
Más información
Título de la Revista: | BOLETIN LATINOAMERICANO Y DEL CARIBE DE PLANTAS MEDICINALES Y AROMATICAS |
Volumen: | 8 |
Número: | 6 |
Editorial: | UNIV SANTIAGO CHILE CASA |
Fecha de publicación: | 2009 |
Página de inicio: | 498 |
Página final: | 508 |
Idioma: | inglés |
URL: | http://www.blacpma.usach.cl/images/docs/008- 006/008-006.pdf |