Technological innovations in packaging are intended to prevent microbiological contaminations for ensuring food safety and preservation. In this context, researchers have investigated the antimicrobial effect of low-density polyethylene films incorporated with the following concentrations of silver nanoparticles: 1.50, 3.75, 7.50, 15.00, 30.00, 60.00, and 75.00 µg/ml. The films were characterized using field emission gun scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetry, and differential scanning calorimetry. From the results of these techniques, it could be concluded that the silver nanoparticles incorporated in the low-density polyethylene films did not influence their physical, chemical, and thermal properties. The direct contact assays, shake-flask assays, and bacterial images obtained using scanning electron microscopy were used to analyze the antimicrobial activity of the films. In the microbial analyses, it was verified that the nanostructured films exhibited antimicrobial properties against all the microorganisms studied, although more notably for fungi and Gram-negative bacteria than the Gram-positive bacteria. Moreover, it was discovered that the packages, in which silver nanoparticles were incorporated, inhibited the growth and reproduction of bacterial cells during the early stages. These results suggest that the extruded low-density polyethylene films incorporated with silver nanoparticles may be an essential tool for improving food quality and safety.

包装方面的技术创新旨在防止微生物污染，从而确保食品安全和保存。在这种情况下，研究人员研究了掺有以下浓度的银纳米颗粒的低密度聚乙烯薄膜的抗菌作用：1.50、3.75、7.50、15.00、30.00、60.00和75.00 µg / ml。使用场发射枪扫描电子显微镜，傅立叶变换红外光谱，X射线衍射，热重分析和差示扫描量热法对薄膜进行表征。从这些技术的结果可以得出结论，掺入低密度聚乙烯膜中的银纳米颗粒不会影响其物理，化学和热性能。直接接触检测，摇瓶检测，并用扫描电子显微镜获得的细菌图像分析膜的抗菌活性。在微生物分析中，已证实纳米结构膜对所有研究的微生物均表现出抗微生物特性，尽管对于真菌和革兰氏阴性细菌而言，比革兰氏阳性细菌更为显着。而且，发现其中掺入了银纳米颗粒的包装在早期阶段抑制细菌细胞的生长和繁殖。这些结果表明，与银纳米颗粒结合的挤出低密度聚乙烯薄膜可能是改善食品质量和安全性的重要工具。证实了纳米结构的膜对所有研究的微生物均表现出抗微生物特性，尽管对于真菌和革兰氏阴性细菌而言，比革兰氏阳性细菌更显着。而且，发现其中掺入了银纳米颗粒的包装在早期阶段抑制细菌细胞的生长和繁殖。这些结果表明，与银纳米颗粒结合的挤出低密度聚乙烯薄膜可能是改善食品质量和安全性的重要工具。证实了纳米结构的膜对所有研究的微生物均表现出抗微生物特性，尽管对于真菌和革兰氏阴性细菌而言，比革兰氏阳性细菌更显着。而且，发现其中掺入了银纳米颗粒的包装在早期阶段抑制细菌细胞的生长和繁殖。这些结果表明，与银纳米颗粒结合的挤出低密度聚乙烯薄膜可能是改善食品质量和安全性的重要工具。在早期阶段抑制细菌细胞的生长和繁殖。这些结果表明，与银纳米颗粒结合的挤出低密度聚乙烯薄膜可能是改善食品质量和安全性的重要工具。在早期阶段抑制细菌细胞的生长和繁殖。这些结果表明，与银纳米颗粒结合的挤出低密度聚乙烯薄膜可能是改善食品质量和安全性的重要工具。