School of Pharmaceutical Sciences, Jilin University, Changchun, Jilin 130021, China.
Department of Agricultural and Biosystems Engineering, South Dakota State University, Brookings, SD 57007, United States.
Int J Biol Macromol. 2024 Nov;279(Pt 3):135184. doi: 10.1016/j.ijbiomac.2024.135184. Epub 2024 Aug 29.
This work demonstrated an innovative antimicrobial and biodegradable food packaging film CBDA-10-SA which was prepared by crosslinking a natural polyphenolic truxillic acid (cyclobutane-dicarboxylic acid, CBDA-10) and sodium alginate (SA). The CBDA-10-SA film exhibited improved tensile strength (148 MPa) and UV shielding capabilities. The maximum thermal decomposition temperature was achieved of 249 °C. Compared to SA film, CBDA-10-SA showed increased antibacterial activities. In food packaging test, the CBDA-10-SA inhibited the rapid growth of potential of hydrogen (pH) value, slowed down the weight loss, reduced total plate count (TPC) value of pork, and delayed the spoilage process of pork. Notably, CBDA-10-SA displayed remarkable degradability in soil, with 60 % degrading in four weeks. In this study, CBDA-10-SA showed enhanced physicochemical and mechanical properties compared to traditional SA film. Those improvements make it anticipated to be used in not only food packaging but also mechanical, pharmaceutical, and agricultural fields.
这项工作展示了一种创新的抗菌和可生物降解的食品包装膜 CBDA-10-SA，它是通过交联天然多酚曲酸（环丁烷-二羧酸，CBDA-10）和海藻酸钠（SA）制备的。CBDA-10-SA 薄膜表现出了更高的拉伸强度（148 MPa）和紫外线屏蔽能力。最大热分解温度达到 249°C。与 SA 薄膜相比，CBDA-10-SA 表现出了更强的抗菌活性。在食品包装测试中，CBDA-10-SA 抑制了潜在氢离子（pH 值）的快速增长，减缓了重量损失，降低了猪肉的总平板计数（TPC）值，并延缓了猪肉的变质过程。值得注意的是，CBDA-10-SA 在土壤中表现出显著的降解性，在四周内降解了 60%。在这项研究中，CBDA-10-SA 与传统的 SA 薄膜相比，表现出了增强的物理化学和机械性能。这些改进使其有望不仅用于食品包装，还可用于机械、制药和农业领域。
