释义：

Lutein is dietary carotenoid derived from dark green leafy vegetables, orange and yellow fruits that form the macular pigment of the human eyes. Lutein has considerable biological activity and confers protection against age-related macular degeneration.

叶黄素是一种膳食类胡萝卜素，来源于深绿色叶蔬菜、橙色和黄色水果，形成人眼的黄斑色素。叶黄素具有相当大的生物活性，可预防老年性黄斑变性。

参考文献:

[1]. Bhat I, et al. Nutraceutical approach to enhance lutein bioavailability via nanodelivery systems. Nutr Rev. 2020 Sep 1;78(9):709-724.  [Content Brief]