The Efficacy of Silver Nitrate (AgNO3) as a Coating Agent to Protect Paper against High Deteriorating Microbes

This study focuses on the efficacy of silver nitrate (AgNO3) as a coating agent used to preserve papers against microbial deterioration. To this end, in vitro cytotoxicity AgNO3 was assessed two normal cell lines, WI-38 and HFB-4, detect safe dose that can be agent, which 80 µg mL−1. Bacillus subtilis B3 Penicillium chrysogenum F9 were selected high deteriorating microbes, previously isolated from historical manuscript dating back 1677 A.-D. The growth inhibition, color change, mechanical properties, cellulosic fibers untreated/treated evaluated. data showed inhibit B. with percentage 100% after 7 days, while it inhibits P. 85.9 ± 1.1% 21 days. properties treated paper presence/absence inoculation slightly changed, although they changed greatly due absence AgNO3. EDX analysis confirmed successful adsorption Ag-ion papers, weight 1.9%. untreated presence highly deteriorated compared standard filter (shown by FT-IR SEM).