Effects of propolis on the storage life of Pink Lady apple fruit.

Experiment was conducted with the fruit collected from Pink Lady apple trees and treated with different concentra-tion of propolis for studying the effect of propolis on the storability when fruits were stored at temperature of(0± 1) ℃.The dynamic changes of the physiological activities were observed once every 10 d during the period of 180 d storage.Results showed the treatment with propolis could effectively inhibit the fruit water loss,decrease the respiration rate and the release rate of ethylene,and also delay the degeneration of total soluble solids,titratable acidity and the Vc oxidation loss.Comparing with control,the difference in flesh firmness,weight loss,titratable acidity and ethylene releasing rate reached the significant difference level(P 0.01).The best result of treatments was received from the treatment with 8% concentration of propolis which kept the fruit freshness quite well.