*2.1.1 Starch*

Starch is a polysaccharide that is composed of two different molecules which are amylose which is a linear polymer and amylopectin which is a highly branched polymer. Starch is widely used in coatings for food materials since it is abundant in nature and has a low cost. Several studies have been carried out to improve physicochemical and optical properties of starch-based edible films using Aloe Vera. Coatings based on starch are odourless and colourless. They possess less oxygen permeability and have an oil-free appearance. They can make an important contribution to decrease in the respiration rate for the fresh fruits and vegetables.
