Abstract: In this paper, the effect of ozone water treatment coupled with bag package on the preservation of Chinese chestnut fruits during storage was investigated. Fengkai Chinese chestnut fruits were immersed in ozone water solution of various concentrations (1.0, 0.5 mg/mL and 0.25 mg/mL). After ozone water treatment, the Chinese chestnut fruits were packaged with plastic bags and stored in an environment at (0 ± 1) ℃ and 90%－95% relative humidity (RH) for 180 days. The changes of quality and physiological indices of Chinese chestnut fruits during the storage period were examined. The results indicated that ozone water treatment coupled with bag package could effectively inhibit the respiration intensity and amylase activity, postpone the change of starch and sugar, reduce the weight loss and decay rate, and improve the catalase activity of Chinese chestnut fruits. Meanwhile, Chinese chestnut fruits treated with 1 mg/mL ozone water coupled with bag package had a decay rate of 3% and a weight loss of 1.1%. Therefore, ozone water treatment coupled with bag package can greatly improve the quality of Chinese chestnut fruits.

Key words: Chinese chestnut, ozone water, quality, bag package, storage