Influence of gamma irradiation in the antioxidant potential of chestnuts (Castanea sativa Mill.) fruits and skins

被引:31
作者
Antonio, Amilcar L. [1 ,2 ]
Fernandes, Angela [1 ]
Barreira, Joao C. M. [1 ,3 ]
Bento, Albino [1 ]
Luisa Botelho, M. [2 ]
Ferreira, Isabel C. F. R. [1 ]
机构
[1] Inst Politecn Braganca, Escola Super Agr, CIMO, P-5301855 Braganca, Portugal
[2] Inst Tecnol & Nucl, Unidade Fis & Aceleradores, GTRPP, P-2686953 Sacavem, Portugal
[3] Univ Porto, Fac Farm, Dept Ciencias Quim, REQUIMTE, P-4099030 Oporto, Portugal
关键词
Irradiated chestnuts; Gamma irradiation; Antioxidant activity; Phenolics/flavonoids; HEALTH;
D O I
10.1016/j.fct.2011.02.016
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
As seasonal products chestnuts have to be post-harvest treated to increase their shelf-life. The most common preservation method for chestnuts is the chemical fumigation with methyl bromide, a toxic agent that is under strictly Montreal Protocol due to its adverse effects on human health and environment. Food irradiation is a possible feasible alternative to substitute the traditional quarantine chemical fumigation treatment. This preliminary study evaluated the influence of gamma irradiation in the antioxidant potential of chestnut fruits and skins, through several chemical and biochemical parameters. The bioactive compounds (phenolics and flavonoids) and DPPH (2,2-diphenyl-1-picrylhydrazyl) radical-scavenging activity, reducing power and inhibition of beta-carotene bleaching capacity were determined. The obtained results seem to indicate that the storage favoured chestnuts antioxidant potential. Furthermore, the application of gamma irradiation also seems to be advantageous for antioxidant activity, independently of the dose used (0.27 +/- 0.04 kGy or 0.54 +/- 0.04 kGy). (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1918 / 1923
页数:6
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