Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/3037
Título: Control and comparison of the antioxidant capacity of beers
Autor: Tafulo, Paula A. R.
Queirós, Raquel Barbosa
Delerue-Matos, Cristina
Sales, M. Goreti F.
Palavras-chave: Antioxidant capacity
Trolox
Ascorbic acid
Gallic acid
TRAP
TEAC
DPPH
FRAP
ORAC
CUPRAC
Beers
Data: 2010
Editora: Elsevier
Relatório da Série N.º: Food Research International; Vol. 43, Issue 6
Resumo: The purpose of the present work is to determine the antioxidant capacity (AC) of 27 commercial beers. The AC indicates the degree of protection of a certain organism against oxidative damage provoked by reactive oxygen and nitrogen species. Assays were carried out by the following methods: (i) total radical trapping antioxidant parameter (TRAP); (ii) trolox equivalent antioxidant capacity (TEAC); (iii) trolox equivalent antioxidant capacity (DPPH); (iv) ferric-ion reducing antioxidant parameter (FRAP); (v) cupric reducing antioxidant capacity (CUPRAC); (vi) oxygen radical absorbance capacity (ORAC). Ascorbic acid (AA), gallic acid (GA) and trolox (TR) were used as standards. All beers showed antioxidant power, but a wide range of ACs was observed. The effect of several factors upon these differences was studied. Statistical differences were found between ACs of beers of different colours. ORAC method provided always higher experimental ACs, of significant statistical differences to other assays.
Peer review: yes
URI: http://hdl.handle.net/10400.22/3037
ISSN: 0963-9969
Versão do Editor: http://www.sciencedirect.com/science/article/pii/S0963996910001687#
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