Shelf life of linseeds and peanuts in relation to roasting

被引：45
作者：
Caemmerer, Bettina [1 ]
Kroh, Lothar W. [1 ]
机构：
[1] Tech Univ Berlin, Inst Food Technol & Food Chem, D-13355 Berlin, Germany
来源：
LWT-FOOD SCIENCE AND TECHNOLOGY | 2009年 / 42卷 / 02期
关键词：
Peanuts; Linseeds; Oxidative stability; Maillard reaction; Deoxyosones; ESR spin trapping; ALPHA-DICARBONYL COMPOUNDS; OXIDATIVE STABILITY; ANTIOXIDANT ACTIVITY; RESONANCE; STORAGE; PART; MELANOIDINS;
D O I：
10.1016/j.lwt.2008.08.003
中图分类号：
TS2 [食品工业];
学科分类号：
0832 ;
摘要：
Changes in the oxidative status of peanuts and linseeds during storage were investigated by the ESR spin trapping technique with N-tert. butyl-alpha-phenylnitrone. It has proven to be a suitable method for the determination of the radical generating reactions in the very early stage of fat spoilage and deterioration reactions can still be detected, before changes in sensory properties are noticeable. Primarily, due to oxidative reactions of lipids, shelf life of peanuts and linseeds as well as their sensory quality decreases with storage time. Roasting has a controversial influence on the stability of linseeds and peanuts, respectively. Roasted linseeds became rancid more rapidly than fresh seeds. With increasing roasting temperature and time the oxidative stability of peanuts was improved and shelf life prolonged. This can be attributed to the formation of antioxidant Maillard reaction products. A correlation was found between the amount of deoxyosones as reactive Maillard reaction intermediates and shelf life of roasted nuts. (C) 2008 Swiss Society of Food Science and Technology. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：545 / 549
页数：5
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