Charoensri Korakot, Shin Yang J, Park Hyun J
Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea.
Polymers (Basel). 2023 Nov 30;15(23):4577. doi: 10.3390/polym15234577.
The fisheries industry encounters distinct packaging challenges, including the need to protect perishable seafood from rapid spoilage caused by UV radiation while allowing for reuse. This study tackles these issues by introducing advanced high-density polyethylene (HDPE) composites enhanced with a UV stabilizer and inorganic fillers, such as diatomaceous earth/zinc oxide (DZ). Our investigation explores the transformative effects of weathering on these pioneering composites, evaluating shifts in mechanical, physical, thermal properties, and sub-zero temperature stability. Incorporating a UV stabilizer alongside DZ within the HDPE matrix significantly enhances mechanical performance and weathering resilience. These enhancements extend the longevity of seafood packaging while preserving product quality. Moreover, our findings reveal a substantial breakthrough in antimicrobial properties. The inclusion of DZ, with or without a UV stabilizer, results in an impressive up to 99% enhancement in antibacterial activity against both Gram-positive and Gram-negative bacteria. This discovery not only bolsters the protective attributes of HDPE packaging but also presents a compelling case for the development of active packaging materials derived from DE/ZnO composites. This study bridges the gap between packaging and seafood quality, introducing advanced polymeric packaging technology for seafood products. It highlights the mutually beneficial link between packaging improvements and ensuring seafood quality, meeting industry needs while promoting sustainability.
渔业面临着独特的包装挑战，包括需要保护易腐海鲜免受紫外线辐射导致的快速变质，同时还要考虑包装的可重复使用性。本研究通过引入添加紫外线稳定剂和无机填料（如硅藻土/氧化锌（DZ））的先进高密度聚乙烯（HDPE）复合材料来解决这些问题。我们的研究探讨了老化对这些新型复合材料的影响，评估了其机械性能、物理性能、热性能以及零下温度稳定性的变化。在HDPE基体中同时加入紫外线稳定剂和DZ可显著提高机械性能和耐候性。这些改进延长了海鲜包装的使用寿命，同时保持了产品质量。此外，我们的研究结果还揭示了抗菌性能方面的重大突破。无论是否添加紫外线稳定剂，加入DZ都能使对革兰氏阳性菌和革兰氏阴性菌的抗菌活性显著提高，最高可达99%。这一发现不仅增强了HDPE包装的保护性能，也为开发源自DE/ZnO复合材料的活性包装材料提供了有力依据。本研究填补了包装与海鲜品质之间的空白，为海鲜产品引入了先进的聚合物包装技术。它突出了包装改进与确保海鲜品质之间的互利关系，满足了行业需求，同时促进了可持续发展。
