Preparation of chitosan and its application on ginger paste and fruit juice as food preservative

Chitosan is a nitrogen containing polysaccharides that forms a semitransparent horny substance and is a principal constituent of the exoskeleton or outer covering of insects, crustaceans and arachnids. In recent years application of natural antimicrobials instead of conventional ones, due to their hazardous effects on health, has got serious attentions.