*2.2.1 Cellulose*

Cellulose is also a linear chain polysaccharide which is a major component of plant cell wall which has a large number of intra-molecular hydrogen bonds causing its water insolubility with highly associated crystalline structure [12]. The native cellulose has very low water solubility properties and is a less suitable film forming material. However, various chemically modified forms of cellulose like carboxymethyl cellulose, methylcellulose, hydroxypropyl cellulose and hydroxypropylmethyl cellulose are quite suitable for film and coating applications.
