Effective inactivation of Bacillus atrophaeus spores and Escherichia coli on disposable face masks using ultraviolet laser irradiation

Journal of Analytical Science and Technology

卷:13

Heesoo Jung¹  Huu-Quang Nguyen²  Hanbyeol Jang²  Youngku Sohn²  My-Chi Thi Nguyen²  Sojung Noh²  Jeongkwon Kim²  Kiju Yee³ 

[1] Chem-Bio Technology Center, Agency for Defense Development (ADD);

[2] Department of Chemistry, Chungnam National University;

[3] Department of Physics and Institute of Quantum Systems, Chungnam National University;

关键词: Ultraviolet;    Laser irradiation;    Sterilization;    Face masks;    Bacillus spores;    Escherichia coli;   

DOI  :  10.1186/s40543-022-00332-7

来源: DOAJ

【 摘 要 】

Abstract Due to the widespread emergence of COVID-19, face masks have become a common tool for reducing transmission risk between people, increasing the need for sterilization methods against mask-contaminated microorganisms. In this study, we measured the efficacy of ultraviolet (UV) laser irradiation (266 nm) as a sterilization technique against Bacillus atrophaeus spores and Escherichia coli on three different types of face mask. The UV laser source demonstrated high penetration of inner mask layers, inactivating microorganisms in a short time while maintaining the particle filtration efficiency of the masks. This study demonstrates that UV laser irradiation is an efficient sterilization method for removing pathogens from face masks.

【 授权许可】

Unknown