Vitamin C, as an essential vitamin for humans, has important physiological functions, such as antioxidants and enzyme cofactors. Mung bean sprouts are a good source of vitamin C and light is an essential impact factor of vitamin C content during germination. This study focused on the kinetic changes and metabolic regulation mechanism of vitamin C during mung bean sprouting under three-light treatment including constant light (24 h light/0 h dark), semi-light (12 h light/12 h dark) and constant dark (0 h light/24 h dark). Results confirmed that vitamin C content increased with the raised of light time during germination. The highest level of vitamin C, appeared on three days after constant light treatment (3-DALT), was 78 - fold higher than the initial concentration. L-ascorbic acid content on 3-DALT of mung bean sprouts was 21.4 and 29.8 times higher compared to the value on day 3 with semi -light treatment and constant dark treatment, respectively. Additionally, PMI, GME, GLDH, GalUR and DHAR expressions had strong correlations with L-ascorbic acid and vitamin C responding to light. Results indicated that light had an intimate correlation with the component and biosynthesis of vitamin C.

中文翻译：

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光对绿豆（Vigna radiata）发芽过程中维生素C代谢调控和积累的影响

维生素C作为人体必需的维生素，具有重要的生理功能，如抗氧化剂、酶辅因子等。绿豆芽是维生素 C 的良好来源，光照是影响发芽过程中维生素 C 含量的重要因素。本研究重点研究了恒光（24 h光/0 h暗）、半光（12 h光/12 h暗）和恒光三种光照条件下绿豆发芽过程中维生素C的动力学变化及代谢调控机制。暗（0 小时亮/24 小时暗）。结果证实，发芽期间维生素C含量随着光照时间的增加而增加。维生素 C 的最高水平出现在持续光照处理 (3-DALT) 三天后，比初始浓度高 78 倍。绿豆芽 3-DALT 的 L-抗坏血酸含量分别为 21.4 和 29。与分别采用半光处理和恒定暗处理的第 3 天的值相比，高 8 倍。此外，PMI、GME、GLDH、GalUR 和 DHAR 表达与 L-抗坏血酸和维生素 C 对光的反应有很强的相关性。结果表明，光与维生素 C 的成分和生物合成密切相关。