Effect of UV-B radiation and a supplement of CaCl2 on carotenoid biosynthesis in germinated corn kernels

文献类型： 外文期刊

第一作者： He, Weiwei

作者： He, Weiwei;Dai, Zhuqing;Liu, Chunquan;Xiao, Yadong;Wei, Qiuyu;Song, Jiangfeng;Li, Dajing;Wang, Yuxi

作者机构：

关键词： Germinated corn kernels; Carotenoid; UV-B radiation; CaCl2

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： 2019 年 278 卷

页码：

收录情况： SCI

摘要： This study investigated effects of UV-B radiation and CaCl2 on the enhancement of carotenoid content in germinated corn kernels. UV-B radiation and CaCl2 treatments were effective for promoting both carotenoid content and antioxidant activity. Furthermore, the carotenoid content was greater when under the combined treatments of UV-B radiation and CaCl2. Activities of superoxide dismutase and peroxidase were enhanced but malondialdehyde content was weakened by UV-B radiation plus CaCl2 compared to the UV-B radiation only. The mRNA expression of PSY, PDS, ZDS, LCYB, LCYE, BCH1, CYP97C genes involved in the carotenoid biosynthesis pathway showed different patterns in UV-B radiation and CaCl2 treatments. This reveals that the UV-B radiation can increase carotenoid content and antioxidant enzyme activity. Moreover, CaCl2 can further improve carotenoid content and reduce photooxidative damage caused by UV-B radiation.

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