不同厚度薄膜气调包装对水蜜桃贮藏品质的影响

Effect of Different Thickness Films on the Quality of Modified Atmosphere Packaging Honey Peaches during the Storage

不同厚度薄膜包装对水蜜桃品质变化的影响试验表明,气调包装显著保持果实可滴定酸水平,抑制总糖含量的降低.贮藏温度是影响水蜜桃MAP贮藏效果的重要因素之一.在(3±1)℃经40d贮藏,0.015mmLDPE的MAP失重率显著降低,小于3%,而对照为9.77%.低渗透薄膜(0.03mmLDPE和O.05mmLDPE)MAP果实的生理失调严重,果肉L*值增加.使用厚度为0.015mmLDPE的包装膜在(3±1)℃经40d贮藏,可保持包装内体积分数:O2为3%,CO2为5%.

The effects of different thickness films on the quality of modified atmosphere packaging honey peaches (Prunus persica) were investigated. Compared to CK, MAP retained fruit at the levels of titratable acidity and total sugars significantly. Fruit stored at high temperature (25℃) was subject to severe decay. MAP increased the incidence of decay at this temperature. Fruit in MAP had minimal weight loss (<3%) , while CK packaged fruit had a 9. 77% weight loss after storage for 40 days at (3±1)℃. Storage temperature was very important for honey peaches in MAP conditions. Lower gas permeation MAP (0. 03 mm and 0. 05 mm LDPE) increased fruit physiological disorders, including browning of the fruit. Packaging honey peaches with 0. 015 mm thickness LDPE at (3±1)℃ resulted in an in-bag atmosphere of 3% O2 with 5% CO2 approximately.