Effects of light quality on main health-promoting compounds and antioxidant capacity of Chinese kale sprouts
2016
Qian, Hongmei | Liu, Tianyu | Deng, Mingdan | Miao, Huiying | Cai, Congxi | Shen, Wangshu | Wang, Qiaomei
The effects of different light qualities, including white, red and blue lights, on main health-promoting compounds and antioxidant capacity of Chinese kale sprouts were investigated using light-emitting diodes (LEDs) as a light source. Our results showed that blue light treatment significantly decreased the content of gluconapin, the primary compound for bitter flavor in shoots, while increased the glucoraphanin content in roots. Moreover, the maximum content of vitamin C was detected in the white-light grown sprouts and the highest levels of total phenolic and anthocyanins, as well as the strongest antioxidant capacity were observed in blue-light grown sprouts. Taken together, the application of a colorful light source is a good practice for improvement of the consumers’ acceptance and the nutritional phtyochemicals of Chinese kale sprouts.
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