Characterization of antioxidant activity of aqueous extracts from guayusa

PEVERINI, AGUSTINA; HVOZDA ARANA, AILEN GALA; JANEZIC, NATASHA; LASAGNI VITAR, ROMINA; REIDES, CLAUDIA; FERREIRA, SANDRA; LLESUY, SUSANA

Ciudad Autónoma de Buenos Aires

Congreso; Reunion conjunta de sociedades de biociencia; 2017

Growing interest in natural antioxidants has developed due to a need for more effective, less toxic antioxidants, and medicinal plants appear to have these desired advantages. During the recent past, studies have shown that Guayusa tea can lower the risk of cardiovascular disease, as well as showing extraordinary antioxidant, antiaging effects and anticancer properties. Infusion and decoction of 5 % w/v were prepared and brain homogenates were used to determine the effect on lipid peroxidation. Antioxidant activity was assessed by 1,1-diphenyl-2-picrylhydrazyl radical (DPPH), and 2,20-azino-bis(3-ethylbenzothiazoline)-6-sulphonic acid radical (ABTS) scavenging activity. Decoction of tea and leaves displayed significant higher values than infusion in terms of DPPH (p