Effect of Chitosan Coating on Qualities and Physiology of Red Fuji Apples at Ambient Storage

Apple Red Fuji fruits were used to investigate the effect of chitosan coating on qualities and physiologies of postharvest fruit during storage with treatment of chitosan coating.The firmness,soluble solide content(SSC),weight loss and respiration rate of apple fruits coated with different concentration of chitosan solution were researched.The results showed that chitosan coating treatment could reduce weight loss,and inhibit the increasing of coating permeability of fruit kernel during storage and maintain lower respiration rate,at the same time,inhibit the reducing of titratable acid,fruit firmness and soluble solid content.Among them 1.5% chitosan coating treatment was the most effective in maintaining qualities of fruit during storage.