In addition, higher concentration of glucosinolates was found in light treated broccoli sprouts.The present study showed that glucosinolates content in broccoli florets was increased by LED green light treatment. However, the mechanism by which light maintaining glucosinolate content is not clear. It is possible that the response of phytochemical synthesis in broccoli florets depends on light dosage and quality, which probably regulated by some photosynthesis or photomorphogenesis pathway.