The green or gold leaf hostas including the variegated forms of these colored leaf perennials are a slugs idea of smorgasbord delights. The waxy coated leaves of this blue hosta are plants that slugs donât like to eat.
Skin pigmentation. Melanin, whose primary function is in pigmentation, has many more important functions to perform in the human body. Protection from UV radiation. Melanin functions as a sunscreen and as a broad spectrum sun radiation absorbent. The absorbed energy causes redox reactions, and both eumelanin and pheomelanin form free radical species. Eumelanin, being more photostable scavenges the originated oxidative species and neutralizes them.
Melanin is a pigment that is produced by cells known as melanocytes in the skin of most animals. It comes in two basic forms: eumelanin (brownish color) and pheomelanin (reddish-brown color). The production of melanin is affected by UV exposure, genetic make-up, size of melanocytes, and disease conditions.elanin is a pigment produced in the skin of almost all animals on earth. Its role in animal survival is critical, and varies depending on the organism. This article addresses melanin function and expression in humans and other organisms, and its role in survival.