Effect of Fresh-keeping Technique of Modified Atmosphere Packaging for Yaoshanxueli at Room Temperature

In order to increase the storage life of Yaoshanxueli,the fresh-keeping effect of modified atmosphere packaging(MAP) was explored at room temperature.Pears were packaged with 0.03 mmPE,0.03 mmPVC and 0.05mmPVC as MAP treatment and opening packaged as control and stored for 35 d at 20 ℃.Significant differences in the quality and decay rate of the fruits were found between the MAP treatment and the control(P0.05).Compared to the control,MAP treatment restrained the respiration rate,inhibited climacteric peak,avoided the decrease of fresh firmness(FF),maintained soluble solid concentration(SSC) and titratable acidity(TA),and reduced weight loss and decay rate.Yaoshanxueli stored in 0.05 mmPVC bags showed the best quality at the storage.The steady-state atmosphere in the 0.05 mmPVC reached 3.5%~5.5%O2 + 6.0%~7.0%CO2.After 35 days of storage,the FF,SSC,TA,weight loss and decay rate of the fruits were 5.3 kg·cm-2,10.9%,0.076%,7.2%,30%,respectively.