access icon free Biological coating of paper using silver nanoparticles

The capacity of Ag nanoparticles to destroy various micro-organisms makes it one of the most powerful antimicrobial agents, an attractive feature against antibiotic resistant bacteria. Here, a simple method to develop coating of colloidal silver on paper using a biological method is presented. The coated paper was studied by scanning electron microscopy, X-ray diffraction technique and atomic absorption spectroscopy. The antibacterial activity of the coated paper against Escherichia coli and Staphylococcus aureus was measured by agar diffusion method. This study shows the potential use of the coated paper as a food antimicrobial packing material for longer shelf life.

Inspec keywords: diffusion; antibacterial activity; paper; microorganisms; biological techniques; coatings; silver; nanobiotechnology; nanoparticles; scanning electron microscopy; food preservation; X-ray diffraction; atomic absorption spectroscopy

Other keywords: antibacterial activity; X-ray diffraction; silver nanoparticles; Escherichia coli; colloidal silver coating; paper; food antimicrobial packing material; agar diffusion method; antibiotic resistant bacteria; scanning electron microscopy; antimicrobial agents; biological coating; Staphylococcus aureus; atomic absorption spectroscopy; Ag

Subjects: Nanotechnology industry; Food industry; Biotechnology industry; Products and commodities; Paper and pulp industries; Surface treatment and coating techniques

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