为探讨不同薄膜包装对空心菜采后品质的影响,文中以‘竹叶’空心菜为试验材料,在(5±1)℃贮藏条件下(90%~95%RH),研究了3种不同厚度薄膜(CK,32.70μm带孔聚乙烯袋;P1,32.70μm聚乙烯袋;P2,12.75μm聚乙烯袋)包装对空心菜(茎、叶)贮藏品质的影响。结果表明:与对照相比,薄膜包装可有效提高空心菜品质,延缓其黄化进程,维持空心菜较高的生理活性,其中P1组的效果最为理想。相比P2及对照,P1组可显著延缓空心菜叶绿素分解,促进可滴定酸积累,维持其较高的总酚含量及抗氧化活性。P1可有效维持采后空心菜的品质,这与其包装袋微环境中的高CO2浓度(1.6%~2.1%)和低O2浓度(14.8%~17.5%)有关。

To investigate the influences of film packaging with different thickness on the quality of postharvest Ipomoea aquatic. Ipomoea aquatica were treated with three kind of film packages : CK-32. 7 μm polyethylene bag with four holes,P1-32. 7 μm polyethylene bag and P2-12. 75 μm polyethylene bag at( 5 ± 1) ℃ with RH 90% ~ 95%. The results showed that film packages could decrease Ipomoea aquatica decay indexes. P1-treatment was more effective. In addition,P1-treated could significantly increase titratable acid,maintain high phenols content and antioxidant activity. Through the analysis of gas ratio of packages,we found that compared with other treatments,P1-treatment could maintain higher concentration CO2( 1. 6% ~2. 1%) and low concentration O2( 14. 8% ~17. 5%),which was essential to keep the good qualities.