Green-synthesized silver nanoparticle coating on paper for antibacterial and antiviral applications

Abstract

The use of active packaging has attracted considerable attention over recent years to prevent and decrease the risk of bacterial and viral infection. Thus, this work aims to develop active packaging using a paper coated with green-synthesized silver nanoparticles (AgNPs). Effects of different silver nitrate (AgNO 3 ) concentrations, viz. 50, 100, 150, and 200 mM (AgNPs-50, AgNPs-100, AgNPs-150, and AgNPs-200, respectively), on green synthesis of AgNPs and coated paper properties were investigated. A bio-reducing agent from mangosteen peel extract (ex-Garcinia mangostana (GM)) and citric acid as a crosslinking agent for a starch/polyvinyl alcohol matrix were also used in the synthetic process. The presence of AgNPs, ex-GM, and citric acid indicated the required synergistic antibacterial activities for gram-positive and gram-negative bacteria. The paper coated with AgNPs-150 showed complete inactivation of virus within 1 min. Water resistance and tensile strength of paper improved when being coated with AgNPs-150. The tensile strength of the coated paper was found to be in the same range as that of a common packaging paper. Result revealed that the obtained paper coated with AgNPs was proven to be effective in antibacterial and antiviral activities; hence, it could be used as an active packaging material for items that require manual handling by a number of people.

Effect of biosynthesised silver nanoparticles as sterilant on physiological and biochemical characteristics in micropropagation of Musa sapientum L.

“…TEM revealed that the AgNPs were spherical and polydispersed (figure 2(A)) with the size distribution of the AgNPs in the range of 5-47 nm and an average size of 23.1 ± 6.8 nm. The size and shape of the AgNPs were significantly different from previous studies [33][34][35][36], probably because of the synthetic conditions including the concentration of AgNO 3 , synthesis temperature, reaction time, and the mangosteen peel extraction procedure. In addition, the shape of the AgNPs was associated with the efficiency of antibacterial activity.…”

Paper‐based material with hydrophobic and antimicrobial properties: Advanced packaging materials for food applications

“…In general, the higher the Ag content, the stronger the antibacterial activity (Youssef et al., 2019). However, its addition should be controlled to avoid possible food safety risks (Srikhao et al., 2023; Williams et al., 2017). Therefore, a key research focus is to reduce the usage of silver while maintaining the same level of antibacterial efficacy.…”

“…Ag/TiO 2 NPs can be potentially used as a disinfection coating for paper and to improve its mechanical properties (Lin et al., 2023; Samir et al., 2022). Composite materials, such as conductive polymer–silver nanoparticles (Lai et al., 2022), polymer–silver nanoparticles composite(El Guerraf et al., 2022), organically modified silica (ORMOSIL) physically doped with AgNPs (Trabelsi et al., 2020), and AgNPs integrated with citric acid and ex‐GM 2 (Srikhao et al., 2023), can provide antimicrobial properties to paper through coating techniques. They show remarkably high and stable activity against representative gram‐positive and gram‐negative bacteria.…”

Development of eco-friendly antifungal and antibacterial adhesive derived from modified cassava starch waste/polyvinyl alcohol containing green synthesized nano-silver

“…Previous studies reported that the properties of AgNPs combined with TA produced synergistic antibacterial activities by increasing the permeability of the microbial cell membrane 20,62,63 . Furthermore, AgNPs also stimulate the generation of reactive oxygen species for attacking microbial cells and also interrupt the replication of bacterial DNA and the signal transduction pathways in the cells 64 . www.nature.com/scientificreports/ Water absorption of as-prepared plywood by bio-adhesive nanocomposite.…”