Identification and Quantification of All-Trans-Zeaxanthin and Its Cis-Isomers During Illumination in a Model System
文献类型: 外文期刊
作者: Zhang, Zhongyuan 1 ; Xiao, Yadong 1 ; Li, Dajing 1 ; Liu, Chunquan 1 ;
作者机构: 1.Jiangsu Acad Agr Sci, Inst Farm Prod Proc, 50 Zhongling St, Nanjing 210014, Jiangsu, Peoples R China
2.Northeast Forestry Univ, Coll Forestry, Harbin, Peoples R China
关键词: Model;Degradation;Isomerization;Illumination;All-trans-zeaxanthin
期刊名称:INTERNATIONAL JOURNAL OF FOOD PROPERTIES ( 影响因子:2.727; 五年影响因子:2.938 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: The degradation and isomerization of all-trans-zeaxanthin in a model system during illumination, in the absence or presence of iodine, were investigated. A high-performance liquid chromatography method was developed using the C-30 column to separate all-trans-zeaxanthin and its cis-isomers. Three mono-cis-isomers and four di-cis-isomers were assigned by high-performance liquid chromatography-photo diode array detection-atmospheric pressure chemical ionization-mass spectrometry (HPLC-DAD-APCI-MS), namely, 15/15'-cis-, 13/13'-cis-, 9/9'-cis-13,15-di-cis-, 9,15-di-cis-, 9,13-di-cis-, and 9,9'-di-cis-zeaxanthin. 13/13'-cis- and 9, 13-di-cis-zeaxanthin were the major cis-isomers of zeaxanthin formed during illumination. Di-cis-zeaxanthin was favored during illumination in the presence of iodine. The degradation of total amount of all-trans-zeaxanthin during illumination was found to fit a first-order model. The degradation rate of iodine-catalyzed photoisomerization of all-trans-zeaxanthin was faster than that of non-iodine-catalyzed photoisomerization. Isomerization and degradation of all-trans-zeaxanthin and its cis-isomers during illumination proceeded simultaneously.
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