1. Introduction
Chitin is usually distributed in marine invertebrates, insects, fungi and yeast. Chitin is a bio polymeric substance
derived from crustaceous shell a homopolymer of β (1→4) linked N- Acetyl-D-glucosamine Austin et al. (1981). In
spite of the presence of nitrogen it may be regarded as cellulose with hydroxyl at position C-2 replaced by an
acetamido group Entsar et al. (2008). Like cellulose it functions a structural polysaccharides (Figure-1).