Light-induced oxidation and isomerization of all-trans-beta-cryptoxanthin in a model system

文献类型： 外文期刊

第一作者： Li, Dajing

作者： Li, Dajing;Xiao, Yadong;Zhang, Zhongyuan;Liu, Chunquan;Xiao, Yadong;Li, Dajing

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期刊名称：JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY （ 影响因子：6.252； 五年影响因子：5.375 ）

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收录情况： SCI

摘要： The oxidation and isomerization of all-trans-p-cryptoxanthin as affected by iodine-catalysed illumination and non-iodine-catalysed illumination were studied. Seven cis-isomers and two oxidation products were separated by HPLC method using a C-30 column. The identification and structural elucidation of the compounds were determined by HPLC-DAD-APCI-MS. Five compounds were identified in details for the first time, namely, beta-beta-carotene-3-one, 5,6-epoxy-beta-beta-carotene-3-one, 13,15-di-cis-, 9,13-di-cis- and 9,9'-di-cis-beta-ciyptoxanthin. Sum of 13- and 13'-cis-beta-cryptoxanthin was the major cis-isomer of beta-cryptoxanthin formed, accounting for 59.0% and 30.6%, respectively. The formation of di-cis isomers may prefer in the present of iodine. 13,15-di-cis-beta-cryptoxanthin was the major di-cis-isomer of the iodine-catalysed photo-isomerization. (C) 2014 Elsevier B.V. All rights reserved.

分类号： Q`O6

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