PDF(Pubmed)
Abstract：
In the pursuit of enhancing food packaging, nanotechnology, particularly green silver nanoparticles (G-AgNPs), have gained prominence for its remarkable antimicrobial properties with high potential for food shelf-life extension. Our study aims to develop corn starch-based coating materials reinforced with G-AgNPs. The mechanical properties were examined using a uniaxial tensile tester, revealing that starch coated with the highest G-AgNPs concentration (12.75 ppm) exhibited UTS of 87.6 MPa compared to 48.48 MPa of control paper, a significant (p < 0.02) 65% increase. The assessment of the WVP showcased a statistical reduction in permeability by up to 8% with the incorporation of the hydrophobic layer. Furthermore, antibacterial properties were assessed following ISO 22196:2011, demonstrating a strong and concentration-dependent activity of G-AgNPs against E. coli. All samples successfully disintegrated in both simulated environments (soil and seawater), including samples presenting G-AgNPs. In the food trial analysis, the presence of starch and G-AgNPs significantly reduced weight loss after 6 days, with cherry tomatoes decreasing by 8.59% and green grapes by 6.77% only. The results of this study contribute to the advancement of environmentally friendly packaging materials, aligning with the UN sustainable development goals of reducing food waste and promoting sustainability.
摘要：
在追求增强食品包装，纳米技术,特别是绿色银纳米颗粒（G-AgNPs），因其卓越的抗菌性能和延长食品保质期的高潜力而备受关注。我们的研究旨在开发用G-AgNPs增强的玉米淀粉基涂层材料。使用单轴拉伸试验机检查机械性能，揭示了用最高的G-AgNPs浓度（12.75ppm）涂覆的淀粉表现出87.6MPa的UTS，与48.48MPa的对照纸相比，显著(p<0.02)增加65%。WVP的评估显示,在掺入疏水层的情况下,渗透率的统计学降低高达8%。此外，根据ISO22196:2011对抗菌性能进行了评估,证明了G-AgNPs对大肠杆菌的强和浓度依赖性活性.所有样品在两种模拟环境（土壤和海水）中都成功分解，包括呈现G-AgNPs的样品。在食品试验分析中，淀粉和G-AgNPs的存在显着减少了6天后的体重减轻，樱桃番茄减少8.59％，绿葡萄减少6.77％。这项研究的结果有助于环保包装材料的进步，与联合国减少食物浪费和促进可持续性的可持续发展目标保持一致。
