Effects Of KaDoZan Treatment And Different Film Bag Packaging On Storage Behavior Of ’Jianyang Tangelo’ Fruit

Tangelo is a new cultivar of hybrid citrus introduced from abroad.It is oblate in shape and golden in color.With oil sacs slightly pop out,the peel is thick and presents a waxy luster.The orange-colored pulp is tender,juicy and coreless,and has a combined flavor of orange and grapefruit.At present,tangelos are mainly cultivated in Nanping,Sanming,and Ning De of Fujian Province as well as Lishui and Qingyuan of Zhejiang Province.Tangelo is a kind of citrus fruit,so it cannot be preserved in a very low temperature.In addition,tangelos metabolize vigorously after harvested which leads to uncertain risks during reposition.The fruit of ’Jianyang Tangelo’ were used as the experiment material.The effects of different concentrations Kadozan treatment and different film bag packaging on harvested ’Jianyang Tangelo’ fruit during storage at(10±1)℃ were investigated.The major results were showed as follows:1.KaDoZan treatment had a fresh-keeping effect to the tangelos.Among others,the 500-times dilution treatment of KaDoZan performed the best.While the respiration intensity under this treatment was the lowest,the nutrient contents such as those of soluble solid,sugar,acid,vitamin C and caritinoid were the highest.The number of healthy fruit was the biggest and the disease infection rate was the lowest.The rate of weight loss and low water index were the lowest,which led to a better fresh-keeping effect than other treatment.Also,the color tone of the fruit peel was at its best.2.Compared with the perforation film bag and common PE film bag packaging,there was higher O2 and lower CO2 content in micro-perforation film bag,which could be beneficial to regulate respiration obviously,maintain higher contents of total soluble solids,titratable acidity and vitamin C in pulp of ’Jianyang Tangelo’ fruit,decrease the accumulation of ethanol in pulp,reduced the decay and low water index of ’Jianyang Tangelo’ fruit and keep higher commercial acceptable fruit rate.From the results it can be seen that the storage results of ’Jianyang Tangelo’ fruit packaging with different kinds of film bag during storage at(10±1)℃ were micro-perforation film bag>perforation film bag>common PE film bag.