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Related Experiment Video

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Author Spotlight: Advancing Gene Silencing Research in Silkworms with dsRNA Delivery Through Feeding Chitosan Nanoparticles

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Development of functional antimicrobial papers using chitosan/starch-silver nanoparticles.

Jeyoung Jung¹, Gopinath Kasi¹, Jongchul Seo¹

¹Department of Packaging, Yonsei University, Gangwondo 26493, Republic of Korea.

International Journal of Biological Macromolecules

|February 3, 2018

Summary

Chitosan:starch-silver nanoparticle (Cht:St-AgNPs) coated papers were synthesized for antimicrobial packaging. The 9:1 ratio demonstrated superior mechanical, water, and oil resistance, alongside potent antimicrobial activity.

Keywords:

Antimicrobial activity Silver nanoparticles Ultrasonication

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Evaluation of Antimicrobial Activities of Nanoparticles and Nanostructured Surfaces In Vitro

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Published on: April 21, 2023

Area of Science:

Materials Science
Nanotechnology
Food Science

Background:

Developing effective antimicrobial packaging is crucial for extending food shelf life and reducing spoilage.
Silver nanoparticles (AgNPs) exhibit broad-spectrum antimicrobial properties.
Chitosan and starch are biocompatible polymers with film-forming capabilities.

Purpose of the Study:

To synthesize chitosan:starch-silver nanoparticle (Cht:St-AgNPs) coated papers.
To evaluate the impact of varying Cht:St-AgNPs ratios on paper properties.
To assess the potential of these coated papers for antimicrobial packaging applications.

Main Methods:

Starch-assisted synthesis of spherical silver nanoparticles (St-AgNPs) with an average size of 7 nm.
Incorporation of chitosan into St-AgNPs solutions at different weight ratios (9:1, 8:2, 7:3, 5:5).
Coating paper substrates with the Cht:St-AgNPs solutions and evaluating mechanical, water/oil resistance, and antimicrobial properties.

Main Results:

The properties of the coated papers were significantly influenced by the Cht:St-AgNPs composition.
The paper coated with a 9:1 ratio of Cht:St-AgNPs exhibited excellent mechanical strength and superior water and oil resistance.
Significant enhancements in mechanical strength, barrier properties, and antibacterial/antifungal activity were observed across Cht:St-AgNPs coated papers.

Conclusions:

Chitosan:starch-silver nanoparticle coated papers demonstrate significant improvements in physical and antimicrobial properties.
The 9:1 Cht:St-AgNPs ratio provides optimal performance for enhanced paper functionalities.
These coated papers show great promise as functional antimicrobial packaging materials.