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<p>The environmental drawbacks of conventional plastic food packaging have led to a high demand for sustainable, biodegradable, and multifunctional alternatives. This study focuses on the valorization of sugarcane bagasse (SCB) as a renewable raw material for developing antimicrobial paper containing chitosan-silver nanoparticles (CS-AgNPs). The SCB pulp was prepared using an optimized pulping process, and the separated paper sheets were coated with different concentrations (0.5, 1, and 2%) of silver nanoparticles (AgNPs) and CS-AgNPs. Agar diffusion method was employed to determine the antimicrobial performances of the coated paper against <i>Escherichia coli</i> and <i>Staphylococcus aureus</i>. The results demonstrated improved antimicrobial activity, superior mechanical properties, and lower porosity of the CS-AgNP-coated papers compared to the AgNPs coating only. Characterization using FTIR, XRD, TGA, SEM, TEM, DLS, AFM, and water contact angle analysis confirmed the successful incorporation of NPs, enhanced hydrophobicity, and improved structural properties. The synergistic interactions between CS and AgNPs were notably effective in stabilizing the NPs, ensuring sustained antimicrobial activity, and enhancing their mechanical strength. This study explored the potential of CS-AgNP-coated SCB paper as an eco-friendly alternative to conventional food packaging, with improved microbial safety, moisture resistance, and environmental sustainability.</p>

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Valorizing Sugarcane Bagasse for Sustainable Antimicrobial Paper Using Chitosan-Silver Nanoparticle Enhancement

  • 期刊论文

  • 发表日期：

    2025年10月17日

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  • Mukesh,
  • Zhuoren Yang,
  • Xuesong Wang,
  • Hao Cheng,
  • Hideya Kawasaki,
  • Yahui Guo,
  • Weirong Yao

摘要

The environmental drawbacks of conventional plastic food packaging have led to a high demand for sustainable, biodegradable, and multifunctional alternatives. This study focuses on the valorization of sugarcane bagasse (SCB) as a renewable raw material for developing antimicrobial paper containing chitosan-silver nanoparticles (CS-AgNPs). The SCB pulp was prepared using an optimized pulping process, and the separated paper sheets were coated with different concentrations (0.5, 1, and 2%) of silver nanoparticles (AgNPs) and CS-AgNPs. Agar diffusion method was employed to determine the antimicrobial performances of the coated paper against Escherichia coli and Staphylococcus aureus. The results demonstrated improved antimicrobial activity, superior mechanical properties, and lower porosity of the CS-AgNP-coated papers compared to the AgNPs coating only. Characterization using FTIR, XRD, TGA, SEM, TEM, DLS, AFM, and water contact angle analysis confirmed the successful incorporation of NPs, enhanced hydrophobicity, and improved structural properties. The synergistic interactions between CS and AgNPs were notably effective in stabilizing the NPs, ensuring sustained antimicrobial activity, and enhancing their mechanical strength. This study explored the potential of CS-AgNP-coated SCB paper as an eco-friendly alternative to conventional food packaging, with improved microbial safety, moisture resistance, and environmental sustainability.