School of Food Science and Engineering, Ministry of Education Engineering Research Centre of Starch & Protein Processing, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China.
Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
Food Chem. 2021 Oct 1;358:129915. doi: 10.1016/j.foodchem.2021.129915. Epub 2021 Apr 21.
Light affects the accumulation of vitamin E and carotenoids in many crops. This study investigated the impact of photoperiods on the metabolic regulation of vitamin E and carotenoids in mung bean sprouts considering their dietary health benefits. Mung beans were germinated under three different photoperiods: constant light, semilight and constant dark. Results revealed that the semilight photoperiod was optimum for vitamin E and carotenoid accumulation in mung bean sprouts. DXS was activated in the constant dark and was inhibited by constant light. GGPPS and HPT were sensitive to semilight photoperiod in the vitamin E biosynthetic pathway, playing dominant roles in vitamin E accumulation. The PSY, LCYE, LUT5, LUT1 and ZE genes, which are associated with carotenoid biosynthesis, were activated under semilight treatment and significantly regulated the accumulation of carotenoids. This knowledge improves knowledge on light-mediated regulation of vitamin E and carotenoids in mung bean sprouts.
光照会影响许多作物中维生素 E 和类胡萝卜素的积累。本研究探讨了光周期对绿豆芽代谢调节的影响，考虑到它们的饮食健康益处。绿豆在三种不同的光周期下发芽：连续光照、半光照和持续黑暗。结果表明，半光照光周期最有利于绿豆芽中维生素 E 和类胡萝卜素的积累。DXS 在持续黑暗中被激活，在持续光照下被抑制。GGPPS 和 HPT 在维生素 E 生物合成途径中对半光照光周期敏感，在维生素 E 积累中起主导作用。与类胡萝卜素生物合成相关的 PSY、LCYE、LUT5、LUT1 和 ZE 基因在半光照处理下被激活，并显著调节类胡萝卜素的积累。这一知识增进了对绿豆芽中维生素 E 和类胡萝卜素的光照调节的认识。
