Wang Anxing, Wang Mengqi, Zhang Yu, Zhang Qing, Yuan Guojun
Collaborative Innovation Center for Chemistry and Life Sciences, Anhui University of Applied Technology, Hefei, 230011, China.
School of Environment and Life Health, Anhui University of Applied Technology, Hefei, 230011, China.
Sci Rep. 2025 Aug 15;15(1):29935. doi: 10.1038/s41598-025-13936-x.
A composite antimicrobial film (Carrageenan/Polyoxometalate, Carr/POM) was prepared by doping Keggin-type polyoxometalate NaPWO into carrageenan using the casting method. The mechanical properties, thermal stability, surface morphology, structure, antimicrobial activity and biodegradability of the films were systematically investigated. The results showed that the incorporation of NaPWO enhanced the water resistance of the carrageenan film and significantly impacted the surface morphology and crystal structure of the film. In antibacterial tests, the Carr/POM film exhibited strong bactericidal activity against Staphylococcus aureus(S.aureus), with the Carr/POM-4 film demonstrating the strongest inhibitory effect, corresponding to an inhibition zone diameter of 10.58 mm.In addition, the Carr/POM films showed excellent biodegradability, with complete decomposition occurring in soil within approximately one week.These findings suggest that the prepared films possess excellent antimicrobial properties against foodborne pathogenic microorganisms, making them promising candidates for further application in the field of food packaging.
采用流延法将Keggin型多金属氧酸盐NaPWO掺杂到卡拉胶中，制备了一种复合抗菌薄膜（卡拉胶/多金属氧酸盐，Carr/POM）。系统研究了该薄膜的力学性能、热稳定性、表面形貌、结构、抗菌活性和生物降解性。结果表明，NaPWO的掺入增强了卡拉胶薄膜的耐水性，并显著影响了薄膜的表面形貌和晶体结构。在抗菌测试中，Carr/POM薄膜对金黄色葡萄球菌（S.aureus）表现出较强的杀菌活性，其中Carr/POM-4薄膜的抑制效果最强，抑菌圈直径为10.58mm。此外，Carr/POM薄膜表现出优异的生物降解性，在土壤中约一周内可完全分解。这些发现表明，所制备的薄膜对食源性病原体微生物具有优异的抗菌性能，使其成为食品包装领域进一步应用的有前途的候选材料。
