Sari Gencag Burcu, Kahraman Kevser, Ekici Lutfiye
Department of Food Engineering, Graduate School of Natural and Applied Sciences, Erciyes University, 38039, Kayseri, Turkey.
Department of Gastronomy and Culinary Arts, Cappadocia University, 50240, Nevşehir, Turkey.
Sci Rep. 2025 May 16;15(1):17083. doi: 10.1038/s41598-025-95349-4.
In this study, silver nanoparticles (AgNPs) were synthesized via a green method from pomegranate peel extract and incorporated into polyvinyl alcohol (PVA) to produce AgPVA nanofibers through electrospinning. Nanofibers containing different silver concentrations (0.5, 1, and 1.5% Ag) were used as coating materials to coat minced meat, and their effects on various quality parameters during storage at 4 °C were evaluated. FTIR, XRD, SEM, and antibacterial analyses were conducted for the characterization of AgNPs and AgPVA nanofibers. To assess the quality characteristics of the minced meat during storage, pH, color, peroxide, TBARS, and microbiological analyses were performed. The results indicated that silver concentrations up to 1% could delay oxidation in minced meat and help preserve its quality. Compared with the other samples, the samples coated with 0.5% AgPVA (A1) and 1.0% AgPVA (A2) nanofibers exhibited a significant antimicrobial effect at the 6-day storage point (p < 0.05). The migration of AgNPs into minced meat was monitored during storage, and all migration values remained below the European food safety authority (EFSA) safety limit of 0.05 mg/kg, demonstrating the safety of the coatings. These findings suggest that AgPVA nanofibers synthesized via a green method could be a promising approach for extending the shelf life of perishable foods by reducing spoilage.
在本研究中,通过绿色方法从石榴皮提取物中合成了银纳米颗粒(AgNPs),并将其掺入聚乙烯醇(PVA)中,通过静电纺丝制备了AgPVA纳米纤维。含有不同银浓度(0.5%、1%和1.5% Ag)的纳米纤维被用作涂层材料来包裹碎肉,并评估了它们在4℃储存期间对各种质量参数的影响。对AgNPs和AgPVA纳米纤维进行了傅里叶变换红外光谱(FTIR)、X射线衍射(XRD)、扫描电子显微镜(SEM)和抗菌分析。为了评估碎肉在储存期间的质量特性,进行了pH值、颜色、过氧化物、硫代巴比妥酸反应物(TBARS)和微生物分析。结果表明,银浓度高达1%可以延缓碎肉的氧化并有助于保持其质量。与其他样品相比,涂有0.5% AgPVA(A1)和1.0% AgPVA(A2)纳米纤维的样品在储存6天时表现出显著的抗菌效果(p < 0.05)。在储存期间监测了AgNPs向碎肉中的迁移,所有迁移值均低于欧洲食品安全局(EFSA)0.05 mg/kg的安全限值,证明了涂层的安全性。这些发现表明,通过绿色方法合成的AgPVA纳米纤维可能是一种通过减少腐败来延长易腐食品保质期的有前途的方法。
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