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<p>This study aimed to develop eco-friendly antimicrobial nanocomposite films by green synthesis using quince (<i>Cydonia oblonga</i> Miller) seed extract (QSE) and silver nanoparticles (AgNPs), providing a sustainable alternative to conventional chemical methods. QSE, rich in polyphenols and pectin, acted as a biocatalyst, while quercetin served as a reducing agent to facilitate AgNP formation and stabilization. The resultant films were comprehensively characterized using Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM) coupled with energy-dispersive spectroscopy (EDS), and particle size analysis. EDS spectra indicated the presence of key elements carbon, oxygen, potassium, and magnesium alongside silver, confirming the successful integration of the QSE components within the nanocomposite matrix. XRD analysis substantiated the presence of elemental silver, while SEM and particle size analysis revealed the nanoscale dimensions of the silver particles embedded within the film structure 20–30&#xa0;nm. FT-IR analysis confirmed that AgNPs chemically interacted with the QSE matrix without causing significant structural alterations, highlighting the compatibility of the components. Antimicrobial activity was tested against <i>Escherichia coli</i>, <i>Staphylococcus aureus</i>, <i>Pseudomonas aeruginosa</i>, and <i>Candida albicans</i> via agar well diffusion. The Ag@QSE2 film exhibited the highest inhibition zones against <i>E. coli</i> (12&#xa0;mm), <i>S. aureus</i> (10&#xa0;mm), and <i>P. aeruginosa</i> (10&#xa0;mm), while Ag@QSE1 showed the strongest effect against <i>C. albicans</i> (20&#xa0;mm). The most effective film was further applied as a food preservative on strawberries, demonstrating promising antimicrobial protection. This study presents a green, effective approach to fabricate antimicrobial films with potential applications in food preservation.</p> Graphical Abstract <p></p>

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Plant-derived Edible Nanocomposite Films with Antimicrobial Silver Nanoparticles: Harnessing Quince Seed Extract for Green Food Preservation

  • 期刊论文

  • 发表日期：

    2025年8月11日

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  • Büşra Şensoy Gün,
  • Arda Aytimur,
  • Çetin Karagöl,
  • Rafig Gurbanov

摘要

This study aimed to develop eco-friendly antimicrobial nanocomposite films by green synthesis using quince (Cydonia oblonga Miller) seed extract (QSE) and silver nanoparticles (AgNPs), providing a sustainable alternative to conventional chemical methods. QSE, rich in polyphenols and pectin, acted as a biocatalyst, while quercetin served as a reducing agent to facilitate AgNP formation and stabilization. The resultant films were comprehensively characterized using Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM) coupled with energy-dispersive spectroscopy (EDS), and particle size analysis. EDS spectra indicated the presence of key elements carbon, oxygen, potassium, and magnesium alongside silver, confirming the successful integration of the QSE components within the nanocomposite matrix. XRD analysis substantiated the presence of elemental silver, while SEM and particle size analysis revealed the nanoscale dimensions of the silver particles embedded within the film structure 20–30 nm. FT-IR analysis confirmed that AgNPs chemically interacted with the QSE matrix without causing significant structural alterations, highlighting the compatibility of the components. Antimicrobial activity was tested against Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, and Candida albicans via agar well diffusion. The Ag@QSE2 film exhibited the highest inhibition zones against E. coli (12 mm), S. aureus (10 mm), and P. aeruginosa (10 mm), while Ag@QSE1 showed the strongest effect against C. albicans (20 mm). The most effective film was further applied as a food preservative on strawberries, demonstrating promising antimicrobial protection. This study presents a green, effective approach to fabricate antimicrobial films with potential applications in food preservation.

Graphical Abstract