Zeaxanthin, a dihydroxy carotenoid isolated and purified from the fruits of Zea mays L., is one of the two diet-obtained carotenoids present in the macula region of the eye, and has been shown to contain antioxidant and anti-inflammation characteristics.

trans-Zeatin is a plant cytokinin, which plays an important role in cell growth, differentiation, and division; trans-Zeatin also inhibits UV-induced MEK/ERK activation.