不同温度与包装对鹰嘴蜜桃贮藏效果的影响

Effects of Different Temperature and Packaging on the Storage of Chick Peach

本研究以连平鹰嘴蜜桃为材料,探究了PVC自发气调保鲜袋、PE自发气调保鲜袋和NP纸袋三种包装材料在常温和2±1℃低温贮藏条件下对采后鹰嘴蜜桃呼吸强度、乙烯释放量、硬度、失重率、好果率、可溶性固形物、可滴定酸和维生素C变化的影响。结果表明:低温和PVC、PE、NP包装都能够较好的抑制果实的呼吸强度、降低乙烯释放量,提高好果率和保持较好的贮藏品质。其中PVC结合低温贮藏效果最好,在降低果实呼吸强度和乙烯释放量的同时,将呼吸跃变发生时间和乙烯高峰释放时间推迟了4 d;贮藏40 d后鹰嘴蜜桃果实的可溶性固形物含量仍能维持在9.51%,可滴定酸含量为0.23%,维生素C含量为5.90 mg/100 g,果实硬度为8.20 kg/cm2,果实失重率为3.10%,好果率达84.50%。

The effects of three kinds of packaging materials associated with PVC, PE and NP on the changes of respiration, ethylene release, firmness, weight loss rate, good fruit rate, soluble solids, titratable acid and vitamin C of postharvest chick peach storaged at room temperature and low temperature（2±1 ℃） were investigated in this study. The results showed that low temperature and packaging of PVC, PE and NP could inhibit the respiration intensity of the fruit, reduce the release of ethylene, improve the rate of good fruit and maintain good storage quality. The effect of PVC combined with low temperature storage was the best, which delayed the time of respiration climacteric and the release time of ethylene peak for 4 days at the same time and reduced the respiration and ethylene release rate. After storage for 30 ds, the content of soluble solids in Chick peach remained at 9.51%, titratable acid content was 0.23%, vitamin C content was 5.90 mg/100 g, fruit hardness was 8.20 kg/cm2, fruit weight loss rate was 3.10%, and good fruit rate was 84.50%.