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 gluco
raphanin 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 antiox
idant 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 phty
ochemicals of Chinese kale sprouts.
The effects of different light qualities, including white, red and blue lights, on main health-promotingcompounds and antioxidant capacity of Chinese kale sprouts were investigated using light-emittingdiodes (LEDs) as a light source. Our results showed that blue light treatment significantly decreasedthe 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-lightgrown 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 colorfullight source is a good practice for improvement of the consumers’ acceptance and the nutritional phtyochemicals of Chinese kale sprouts.
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