The natural pigments produced by algae can be used as an alternative to chemical dyes and coloring agents. There is also much interest in the food industry into replacing the coloring agents that are currently used with coloring derived from algal pi

Lichen colors vary widely due to presence or absence of special pigments, though in the absence of these, lichens are generally gray or greenish gray. Lichen pigments are pigments or dyes prepared from certain lichens. Many L.p.(eg. litmus and orcein

Xanthoria parietina, the golden shield lichen, is a conspicuous yellow foliose lichen. It is found in sunny, exposed places that are rich in nitrogen. Many species of lichen-forming fungi contain yellow or orange extracellular pigments belonging to t

Pumpkin is one of the best dietary sources of carotenoid, the pigment responsible for the yellow, orange and red colours in plants. Carotenoids are important antioxidants and those found in pumpkin can be converted to vitamin A, important for growth