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.
Second, melanin development in human skin doesnât work this way. Melanin is not some static substance. It is produced by cells called malanocytes via a process called melanogenesis. Basically, an enzyme called tyrosinase acts as a catalyst for melanin production when an amino acid called tyrosine is oxidized.This is what happens when a cut potato turns brown.elanin, or skin pigment has a variety of properties, including lessening the toxic effect of heavy metals, protection against biological warfare attacks, and acting as a sunscreen. In biological science melanin is known to possess a diverse set of roles and functions in a wide range of organisms.