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Degradation of carotenoids in dehydrated pumpkins as affected by different storage conditions

文献类型： 外文期刊

作者： Song, Jiangfeng 1 ; Wei, Qiuyu 1 ; Wang, Xiaoping 1 ; Li, Dajing 1 ; Liu, Chunquan 1 ; Zhang, Min 3 ; Meng, Lili 4 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Farm Prod Proc, Nanjing 210014, Jiangsu, Peoples R China

2.Nanjing Agr Univ, Coll Food Sci & Technol, Nanjing 210095, Jiangsu, Peoples R China

3.Jiangnan Univ, Sch Food Sci & Technol, Wuxi 214122, Peoples R China

4.Jiangsu Acad Agr Sci, Inst Agr Facil & Equipment, Nanjing 210014, Jiangsu, Peoples R China

关键词： Dehydrated pumpkin carotenoids; Kinetics of carotenoids degradation; Carotenold isomers; Storage condition

期刊名称：FOOD RESEARCH INTERNATIONAL （ 影响因子：6.475； 五年影响因子：6.508 ）

ISSN： 0963-9969

年卷期： 2018 年 107 卷

页码：

收录情况： SCI

摘要： The degradation kinetics of carotenoids in dehydrated pumpkins, stored at 4, 25, and 40 degrees C under air or controlled atmosphere conditions (N-2), was evaluated using reversed-phase high performance liquid chromatography coupled with diode array and mass spectrometry detectors. The degradations of predominant carotenoids including beta-carotene, alpha-carotene and lutein depended on the storage temperature, the storage duration as well as the presence of oxygen, which was following the first-order kinetics. The temperature dependence of reaction constants were well explained by the Arrhenius relationship. The activation energy (Ea) for carotenoids degradation ranged from 23.69 kJ/mol for lutein in N-2 -packaged dehydrated pumpkins to 13.82 kJ/mol for beta-carotene in air-packaged samples. Lutein was less degradable than alpha-carotene and beta-carotene in dehydrated pumpkins during storage. Higher all-E-carotenoid degradation in N-2-packaged dehydrated pumpkins stored at 40 degrees C occurred than that stored at lower temperature under N-2 or air storage, and those storage conditions were beneficial to the formation of Z-isomers (e.g., 15-Z-beta-carotene and 13-Z-beta-carotene). Storage under N-2 at 4 degrees C enhanced the retention of all-E-carotenoids in dehydrated pumpkins. Thus, package atmosphere should be paid more attention during long-term storage.

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