Water accelerated transformation of d-limonene induced by ultraviolet irradiation and air exposure
文献类型: 外文期刊
第一作者: Li, Li Jun
作者: Li, Li Jun;Hong, Peng;Jiang, Ze Dong;Yang, Yuan Fan;Du, Xi Ping;Sun, Hao;Ni, Hui;Li, Li Jun;Yang, Yuan Fan;Du, Xi Ping;Ni, Hui;Li, Li Jun;Yang, Yuan Fan;Du, Xi Ping;Ni, Hui;Wu, Li Ming;Chen, Feng
作者机构:
关键词: d-Limonene;Transformation;Ultraviolet irradiation;Air exposure;Water;Isotope labelling
期刊名称:FOOD CHEMISTRY ( 影响因子:7.514; 五年影响因子:7.516 )
ISSN: 0308-8146
年卷期: 2018 年 239 卷
页码:
收录情况: SCI
摘要: d-Limonene is a fragrant chemical that widely exists in aromatic products. Isotopic labelling of water molecules plus GC-MS and GC-PCI-Q-TOF analyses were used to investigate the influence of water molecules on chemical transformation of d-limonene induced by UV irradiation and air exposure. The results showed that the synergistic effect of UV irradiation, air exposure and water presence could facilitate d-limonene transformation into the limonene oxides: p-mentha-2,8-dienols, hydroperoxides, carveols, l-carvone and carvone oxide. UV irradiation, air exposure, or water alone, however, caused negligible d-limonene transformation. With the aid of isotopic labelling of water and oxygen molecules, it was found that water molecules were split into hydrogen radicals and hydroxyl radicals, and the hydrogen radicals, in particular, promoted the transformation reactions. This study has elucidated the mechanism and factors that influence the transformation of d-limonene, which will benefit industries involved in production and storage of d-limonene-containing products. (C) 2017 Elsevier Ltd. All rights reserved.
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