American Chemical Society
mt3c00195_si_001.pdf (1.42 MB)

A Natural Virucidal and Microbicidal Spray Based on Polyphenol-Iron Sols

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journal contribution
posted on 2023-04-21, 17:17 authored by Sang Yeong Han, Gyeongwon Yun, Hyeon-Min Cha, Myoung Kyu Lee, Hojae Lee, Eunhye K. Kang, Seok-Pyo Hong, Kirsty A. Teahan, Minjeong Park, Hansol Hwang, Seung Seo Lee, Meehyein Kim, Insung S. Choi
Numerous disinfection methods have been developed to reduce the transmission of infectious diseases that threaten human health. However, it still remains elusively challenging to develop eco-friendly and cost-effective methods that deactivate a wide range of pathogens, from viruses to bacteria and fungi, without doing any harm to humans or the environment. Herein we report a natural spraying protocol, based on a water-dispersible supramolecular sol of nature-derived tannic acid (TA) and Fe3+, which is easy-to-use and low-cost. Our formulation effectively deactivates viruses (influenza A viruses, SARS-CoV-2, and human rhinovirus) as well as suppressing the growth and spread of pathogenic bacteria (Escherichia coli, Salmonella typhimurium, Staphylococcus aureus, and Acinetobacter baumannii) and fungi (Pleurotus ostreatus and Trichophyton rubrum). Its versatile applicability in a real-life setting is also demonstrated against microorganisms present on the surfaces of common household items (e.g., air filter membranes, disposable face masks, kitchen sinks, mobile phones, refrigerators, and toilet seats).