载Nisin壳聚糖淀粉涂布纸的制备与性能分析

摘要

Objective To prepare a new kind of grease resistant antibacterial paper using natural biological material as grease resistant and antibacterial agents,and to test its grease resistance and antibacterial properties.Methods Grease resistant-antibacterial paper was prepared by coating grease resistant antibacterial agent on paper.The grease resistance grade was tested by surface repellency test.The inhibition rate of coated paper on Escherichia coli and Staphylococcus aureus was calculated by colony method.Results When the ratio of 1 g/100 mL chitosan to 10 g/100 mL starch was 1:2,the grease resistance grade of coated paper reached 8,the cost was about 0.3 RMB/m2;when the addition amount of Nisin reached 1 g/100 mL,the inhibitory rates of coated paper on Escherichia coli and Staphylococcus aureus were 70.3％ and 72.8％,respectively.Conclusion Nisin-loaded chitosan-starch coated paper,while ensuring grease resistance of paper,cost less than chitosan coated paper and has more suitable viscosity than chitosan and starch.It also has better toughness and flatness than starch coated paper,and can inhibit Staphylococcus aureus and Escherichia coli effectively.%制备一种以天然生物材料为防油抗菌涂层的新型防油抗菌纸,并测试其防油抗菌性能.将防油抗菌剂涂布于纸张表面制备防油抗菌纸,用表面排斥法测试其防油等级,用菌落法计算纸张对大肠杆菌与金黄色葡萄球菌的抑制率.结果表明:1 g/100 mL壳聚糖溶液与10g/100mL淀粉溶液体积比为1∶2时,涂布纸张的防油等级达到8,防油部分成本约为0.3元/m2;Nisin的添加量达到1 g/100 mL时,涂布纸张对大肠杆菌以及金黄色葡萄球菌的抑制率分别为70.3％,72.8％.载Nisin壳聚糖淀粉涂布纸在保证防油性的同时,较壳聚糖涂布纸有效降低了成本,控制了黏度,且具有比淀粉涂布纸张更好的韧性与平整度,能有效抑制大肠杆菌和金黄色葡萄球菌.