The antimicrobial nisin peptide was grafted to the 2,3-dialdehyde cellulose through Schiff's base reaction. The obtained peptidopolysaccharide films had the denser microstructure, lower water holding capacity, and increased mechanical properties than the pristine cellulose film. The peptidopolysaccharide films exhibited promising antibacterial activity toward Gram-positive and Gram-negative bacteria, and the ability to induce bacteriostasis of the N-3 peptidopolysaccharide film was four orders of magnitude higher than that of pure cellulose film. In an extended application, the peptidopolysaccharide antibacterial films were used as packaging materials for fresh pork, the results indicated that the peptidopolysaccharide films readily killed the adhered bacteria upon contact, and the N-3 peptidopolysaccharide film extended the shelf-life of the fresh pork at least for six days as compared with polyethylene wrap. Therefore, these peptidopolysaccharides films represent good potential as a green food packaging material.

通过席夫氏碱反应将抗菌素乳链菌肽肽移植到2,3-二醛纤维素上。与原始纤维素膜相比，所获得的肽多糖膜具有更致密的微观结构，更低的持水量和更高的机械性能。肽多糖膜对革兰氏阳性菌和革兰氏阴性菌均显示出有希望的抗菌活性，并且诱导N-3肽多糖膜的抑菌能力比纯纤维素膜高四个数量级。在扩展的应用中，肽多糖抗菌膜被用作新鲜猪肉的包装材料，结果表明，肽多糖膜在接触后很容易杀死粘附的细菌，与聚乙烯包裹纸相比，N-3肽多糖膜至少可以将新鲜猪肉的保质期延长六天。因此，这些肽多糖薄膜具有作为绿色食品包装材料的良好潜力。