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Type: Artigo de periódico
Title: In vitro scavenging capacity of annatto seed extracts against reactive oxygen and nitrogen species
Author: Chiste, RC
Mercadante, AZ
Gomes, A
Fernandes, E
Lima, JLFD
Bragagnolo, N
Abstract: Bixa orellana L. (annatto), from Bixaceae family, is a native plant of tropical America, which accumulates several carotenoids (including bixin and norbixin), terpenoids, tocotrienols and flavonoids with potential antioxidant activity. In the present study, the in vitro scavenging capacity of annatto seed extracts against reactive oxygen species (ROS) and reactive nitrogen species (RNS) was evaluated and compared to the bixin standard. Annatto extracts were obtained using solvents with different polarities and their phenolic compounds and bixin levels were determined by high performance liquid chromatography coupled to diode array detector. All annatto extracts were able to scavenge all the reactive species tested at the low mu g/mL range, with the exception of superoxide radical. The ethanol:ethyl acetate and ethyl acetate extracts of annatto seeds, which presented the highest levels of hypolaetin and bixin, respectively, were the extracts with the highest antioxidant capacity, although bixin standard presented the lowest IC(50) values. (C) 2011 Elsevier Ltd. All rights reserved.
Subject: Bixa orellana
Antioxidant capacity
Phenolic compounds
Country: Inglaterra
Editor: Elsevier Sci Ltd
Citation: Food Chemistry. Elsevier Sci Ltd, v. 127, n. 2, n. 419, n. 426, 2011.
Rights: fechado
Identifier DOI: 10.1016/j.foodchem.2010.12.139
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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