at good levels. Mango peel and pulp contain other phytonutrients , such as the pigment antioxidants - carotenoids and polyphenols - and omega-3 and -6 polyunsaturated fatty acids . Mango peel contains pigments that may have antioxidant properties, [13] [14] including carotenoids, such as the provitamin A compound, beta-carotene , lutein and alpha-carotene