STUDY ON CHITOSAN COATIONG IN STORAGE OF CHINESE WINTER JUJUBE

Used different concentrations of chitosan coating on Chinese winter jujube,studied the storage quality of Chinese winter jujube under low temperature.The results showed that: in the condition of low temperature,chitosan coating can maintain firmness and the contents of Vitamin C,inhibit the decline in soluble solids content and titratable acidity content,reduce respiration rate,inhibit fruit turning red,reduce weight loss and rot rate and extend the storage time of Chinese winter jujube.The best concentration of chitosan coating on Chinese winter jujube is 1%,the Chinese winter jujube treated by 1% chitosan has the lowest respiration rate,the slowest decline in firmness,the contents of titratable acidity and Vitamin C and the lowest rot rate.