目的 开发一种接枝性抗菌包装并应用于水产品保鲜，为进一步将接枝型包装薄膜应用于生产提供一种新的途径。方法 将聚六亚甲基双胍盐酸盐(Polyhexamethylene Biguanide Hydrochloride, PHMB)和聚六亚甲基单胍盐酸盐(Polyhexamethyleneguanidine Hydrochloride, PHMG)接枝到淀粉上，再将其与聚乳酸(Polylactic Acid, PLA)和聚己二酸/对苯二甲酸丁二酯(Poly (Butyleneadipate-Co-Terephthalate), PBAT)共混改性，通过流延挤出工艺制备接枝性抗菌薄膜，并应用于鲍鱼保鲜。结果 淀粉接枝胍类物质后实现了淀粉的抗菌化，添加了PHMB和PHMG的PLA/PBAT薄膜阻隔性能显著增强(P＜0.05)，并且赋予了薄膜抑菌性，延缓了鲍鱼菌落总数、硫代巴比妥酸和挥发性盐基氮值的上升。结论 淀粉接枝PHMB和PHMG后改善了薄膜的阻隔性，Starch-g-PHMB/PLA/PBAT和Starch-g-PHMG/PLA/PBAT薄膜可有效抑制微生物作用，延缓鲍鱼氧化和腐败速率，可有效延长鲍鱼货架期。

The work aims to develop a grafted antibacterial packaging and apply it to the preservation of aquatic products, so as to provide a new way for further application of grafted packaging films in production. First, polyhexamethylene biguanide hydrochloride (PHMB) and polyhexamethyleneguanidine hydrochloride (PHMG) were grafted onto starch. Then, they were subject to blending modification with polylactic acid (PLA) and poly (butylene adipate co-terephthalate) (PBAT) to prepare a grafted antibacterial packaging film by casting extrusion and apply the film to preservation of abalone. The antimicrobialization of starch was achieved by grafting PHMB and PHMG onto starch. The barrier property of the PLA/PBAT film with PHMB and PHMG was significantly improved (P＜0.05). It imparted bacteriostasis properties to the film, and delayed the increase of the total colonies, thiobarbituric acid and volatile base nitrogen in abalone. The grafting of PHMB and PHMG onto starch effectively improves the barrier property of the film. The starch-g-PHMB/PLA/PBAT and starch-g-PHMG/PLA/PBAT films can effectively inhabit the microbial action, delay the oxidation and spoilage of abalone and effectively extend the shelf life of abalone.