Chitosan coating can create MA that decrease the response of fruit to environmental conditions by reducing gas exchange leading to retardant ripening, water loss, respiration rate, and ethylene production. Chitosan can act as an exogenous elicitor inducing activities of several defense-related enzymes and accumulating special substances in some plants, which are known to participate in defense mechanisms and to prevent pathogen infections. The effects of chitosan coatings on
the extension of storage life of many fruits were reported.