A Facile Green Fabrication and Characterization of Cellulose-Silver Nanoparticle Composite Sheets for an Antimicrobial Food Packaging.

Seongyoung Kwon,Wooseok Lee,Jung Wook Choi,Seonghyuk Ko,Nattinee Bumbudsanpharoke

doi:10.3389/fnut.2021.778310

Abstract

The present study focused on a facile and green approach for the one-step synthesis of silver nanoparticles (AgNPs) embedded in hard wood bleached kraft fiber. The hydroxyl groups on the cellulose chain induced ionic silver reduction with additional hydrothermal energy, allowing for the in situ formation and deposition of AgNPs on the cellulose fiber. The white color of the bleached fiber transformed to yellow due to the formation of AgNPs. UV-Vis spectroscopy, scanning electron microscopy, and X-ray photoelectron spectroscopy revealed that the AgNPs were uniformly distributed across the surface of the obtained cellulose fibers. The results indicated that the formation and distribution of AgNPs on surface of cellulose fibers was significantly influenced by the amount and concentration of silver nitrate (AgNO3). The antimicrobial activity of the cellulose-AgNP composite sheet against Escherichia coli was found to be inhibiting. These findings imply that cellulose-AgNP composite sheets can be feasibly used as antimicrobial paper for food packaging.

Highlights

Nanobiotechnology is one of the most active research areas in modern material science
The results indicate that the concentration of silver precursor influenced the formation of AgNPs by enhancing the oxidation of cellulose hydroxyl groups
Because the resonant frequency represented by absorbance did not shift, it was expected that these factors would have no effect on the shape and size of the as-obtained AgNPs [60]

Summary

INTRODUCTION

Nanobiotechnology is one of the most active research areas in modern material science. The direct synthesis or growth of metal nanoparticles on cellulosic materials is of interest for many applications, including fabrics and textiles [17,18,19], catalysis [20,21,22], biomedical device [23,24,25], and active packaging [26,27,28]. Innovative research in the area of active packaging and containers, focusing on antimicrobial properties of silver nanoparticles (AgNPs), is crucial to the growth of food and beverage industries [36]. The antimicrobial activity of the as-prepared cellulose-AgNP composite sheet was quantitatively tested according to the JIS Z 2801: 2000 standard. CFU from the cellulose-AgNP composite sheet after 24 h incubation

RESULTS

CONCLUSION

DATA AVAILABILITY STATEMENT