| 释义 |
xanthine/ˈzænθi:n/n. (also 亦作 xanthin /-in/) Biochem. 【生化】 1 a purine derivative found in blood and urine which is a breakdown product of nucleic acids and is the parent compound of caffeine and other alkaloids 黄嘌呤(一种嘌呤碱，存在于血液和尿中，是核酸的分解物) 2 (作 xanthin) any of various orange or yellow carotenoids found in plants 叶黄素(存在于植物中的桔黄色或黄色的类胡萝卜素) |