涂布抑菌防霉包装纸及其性能研究

将山梨酸钾、脱氢乙酸钠、苯甲酸钠分别溶于聚乙烯醇溶液制得抗菌液,再将抗菌液涂布于牛皮纸上制备得到包装用抑菌纸。采用抑菌圈法检验该抑菌纸对大肠杆菌和金黄色葡萄球菌的抑制效果,研究了涂布抗菌液后对抑菌纸的抗拉强度、撕裂强度、水蒸气透过系数、氧气透过量和微观结构的影响。结果表明,抑菌纸的抗拉强度、撕裂强度、水蒸气透过系数、氧气透过量均有改善,微观结构更加致密均匀,且具有良好的抑菌性能,抑菌效果随抗菌剂浓度的增加而提高,可用于食品的包装。

Study on coated antibacterial and mildew proof packaging paper and its properties

The antibacterial liquid was prepared by dissolving potassium sorbate, sodium dehydroacetate and sodium benzoate in polyvinyl alcohol solution, and then the antibacterial liquid was applied to kraft paper to prepare antibacterial paper for packaging. The inhibitory effects of the antibacterial paper on Escherichia coli and Staphylococcus aureus were tested by the bacteriostatic circle method, and the effects of the coated antibacterial solution on the tensile strength, tear strength, water vapor permeability coefficient, oxygen permeability and microstructure of the antibacterial paper were studied as well. The results showed that the tensile strength, tear strength, water vapor permeability coefficient and oxygen permeability of the antibacterial paper were improved, and the microstructure was more compact and uniform, with good antibacterial properties. The bacteriostatic effect increased with the increase of the concentration of the antibacterial agent, and could be used for packaging of foods.