用于新鲜果蔬的不同包装材料的性能研究  

Performance of Different Packaging Materials for Fresh Fruit and Vegetable

作　　者：李丹[1] 陈欣[2] 于佳佳[2] LI Dan;CHEN Xin;YU Jia-jia(Shanghai Naval Medical Research Institute,Shanghai 200433,China;Labthink Instruments Co.,Ltd.,Jinan 250031,China)

机构地区：[1]海军医学研究所,上海200433 [2]济南兰光机电技术有限公司,济南250031

出　　处：《包装工程》2018年第21期117-120,共4页Packaging Engineering

摘　　要：目的研究并筛选出柔韧性及透气性较好的包装材料,保证新鲜果蔬具有较长贮存期限及良好品质。方法以6种不同材质结构与厚度的薄膜为样品,分别检测并对比分析样品在温度为25,5℃(相对湿度均为90%)这2种试验条件下的氧气与二氧化碳透过量,以及拉断力与拉伸标称应变,并且测试研究在冷藏环境下各样品的摆锤冲击能量。结果相比5℃条件下,6种样品在25℃条件下的氧气与二氧化碳透过量较高;2种条件下样品的氧气与二氧化碳透过量由高到低均依次为2#,3#,4#,5#,6#,1#;1#样品的柔韧性较好,4#,5#,6#样品的强度较低,且柔韧性均匀度较差,经过改性后的2#与3#样品的强度提高,但柔韧性降低;冷藏后1#样品的柔韧性略有提高,4#,5#,6#样品的柔韧性均降低。结论材料结构、厚度、改性方式等均会影响包装膜的各项性能,新鲜果蔬生产企业应在充分考虑果蔬特性、保质期、贮存条件等因素的基础上,及时监测包装材料性能,从而筛选出适宜的包装材料。The paper aims to research and select packaging materials of good flexibility and permeability to ensure the long shelf life and good quality of fresh fruits and vegetables.Six film samples of different structures and different thicknesses were used in O2 and CO2 permeability tests performed at 25℃,90%RH and 5℃,90%RH,as well as the tensile force test at break and pendulum impact energy test before and after cold storage.The six samples had higher O2 and CO2 permeability at 25℃than 5℃.The order of permeability was 2#>3#>4#>5#>6#>1#for the six samples under the two test conditions.Sample 1#had good flexibility.Sample 4#,5#and 6#had low strength and uniformity flexibility.The strength of modified 2#and 3#samples was improved,with decreased flexibility.The flexibility of sample 1#after cold storage was increased slightly,but the flexibility of sample 4#,5#,and 6#decreased after cold storage.The structure,thickness and modification methods may affect the performance of the packaging film.Fresh fruit and vegetable producers shall keep monitoring the properties of the packaging materials based on factors such as the characteristics of the fruits and vegetables,shelf life and storage conditions,so as to select suitable packaging materials for their products.

关 键 词：新鲜果蔬 包装材料 氧气透过量 二氧化碳透过量 拉断力 拉伸标称应变 摆锤冲击能量 

分 类 号：TB484[一般工业技术—包装工程]