Chitin a precursor to chitosan is the penultimate versatile polymer thereafter the β-linked sugar polymer; they are reflective sugars, reactive and with non-brittle properties present in the cellular walls of fungi and in the shells of crustaceans and other insects. Chitosan and their formulations are non toxic to human and biotic sorroundings (GRAS) with good characteristics such adaptability and blendable, non-toxicity and financially effective. The properties of this amine linked biocomposite expose their numerous biotechnological applications as enlisted. Search for renewability of their supply is a biotechnological topnotch to meet with their over-rising demand in the today global market.