Effects Of Fruit Wax On Postharvest Behavior Of Asian Pears (cv. Zaosu)

Effects of two kinds of fruit wax on postharvest behavior of asian pear ( cv. Zaosu) were studied in this paper. The texture, membrane permeability, Peroxidase (POD) and superoxidase dismutase (SOD) activities were also researched in fruit treated with wax A and B during storage at ambient (20℃-26℃,RH 55%±2%) and low temperature (8℃-12℃,RH 65%±2%) respectively. The results showed as below: The fruit quality was maintained effectively. Soluable solide content and firmness were not decreased significantly by waxing respectively. Wax B showed better than wax A during the storage at ambient but no difference was found at low temperature. Weight loss was decreased significantly by waxing. The weight loss of fruit treated with wax B was higher than that of wax A at two temperature treatments especially during the latter period of storage. The yellowing of fruit was delayed by waxing at different level. At different temperature, the yellowing index was lowered and chlorophyll was higher than that of control significantly. Wax B showed bettrer than A on maintaining greening. of greening. Fruit waxes had effects on POD and SOD activity and delayed senescence process. Waxing increased significantly POD activity and decreased induction of SOD. POD isoenzyme showed difference at different temperature. Differences were found signicantly on POD isoenzyme during low temperature storage, however no differences were found aduring ambient. Storage.