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Related Experiment Video

Updated: Jan 29, 2026

Controlled-release of Chlorine Dioxide in a Perforated Packaging System to Extend the Storage Life and Improve the Safety of Grape Tomatoes
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A Green Approach to Bio-Based Active Packaging: Grape Skin Extract-Synthesized AgNPs for Food Preservation.

Wenjia Yin1, Yongzhen Lei1, Jiayi Wang1

  • 1School of Packaging Design Art, Hunan University of Technology, Zhuzhou 412007, China.

Materials (Basel, Switzerland)
|January 28, 2026
PubMed
Summary

Researchers created a green composite film using grape skin extract and silver nanoparticles (AgNPs) in a PVA/chitosan matrix. This novel antibacterial packaging material enhances food preservation and reduces waste.

Keywords:
antimicrobial filmchitosanfood preservationpolyvinyl alcoholsliver nanoparticles

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Food Science

Background:

  • Developing sustainable and effective food packaging is crucial for reducing spoilage and environmental impact.
  • Conventional packaging often relies on synthetic materials with limited antimicrobial properties.
  • Green synthesis of nanoparticles offers an eco-friendly alternative for functionalizing packaging.

Purpose of the Study:

  • To develop an environmentally friendly composite film with enhanced antibacterial and preservation properties.
  • To utilize grape skin extract for green synthesis of silver nanoparticles (AgNPs).
  • To evaluate the performance of AgNP-incorporated PVA/chitosan films for fruit preservation.

Main Methods:

  • Green synthesis of AgNPs using grape skin extract as a reducing agent.
  • Incorporation of synthesized AgNPs into a Polyvinyl Alcohol (PVA)/chitosan matrix.
  • Characterization of AgNPs using UPLC-MS and TEM.
  • Systematic evaluation of film properties: barrier, mechanical, antibacterial, and fruit preservation.

Main Results:

  • AgNPs were successfully synthesized using grape skin extract.
  • The composite films exhibited significantly improved water vapor and oxygen barrier properties.
  • The films demonstrated excellent broad-spectrum antibacterial activity.
  • Grape storage experiments showed delayed skin aging and moisture loss in fruits packaged with AgNP-enhanced films.

Conclusions:

  • Green synthesis of AgNPs from natural sources is a viable method for creating functional packaging materials.
  • AgNP-reinforced PVA/chitosan films offer superior barrier and antibacterial properties for food preservation.
  • This approach presents a promising, eco-friendly solution for developing advanced antibacterial packaging.