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
作者： He, Weiwei 1 ; Wang, Yuxi 2 ; Dai, Zhuqing 1 ; Liu, Chunquan 1 ; Xiao, Yadong 1 ; Wei, Qiuyu 1 ; Song, Jiangfeng 1 ; Li, 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Inst Agroprod Proc, Nanjing 210014, Jiangsu, Peoples R China
2.Northeast Forestry Univ, Coll Forestry, Harbin 150040, Heilongjiang, Peoples R China
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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