Challenges of Far-UVC222nm radiation for food safety applications
Year: 2025
Type: article
Abstract: This work has reviewed the recent research progress in the utilisation of filtered Far-UVC lamps, predominantly KrCl excimer lamp emitting at 222 nm as disinfection applications. This review suggests inconsistent effectiveness of Far-UVC radiation against various microbial targets, largely influenced by light penetration and light absorption coefficients. According to current evidence, there is very limited progress in developing reliable Far-UVC lamps for long-term use in real world, resulting in technically constrained applications. The microbiological data further reveals that the technology's disinfecting capability is limited against biofilms, bacterial spores , and fungi due to their resilient structural and life cycle features. Current limitations in efficacy consistency and light source technology preclude Far-UVC from serving as a direct substitute for conventional UVC. However, its outstanding safety profile promise the technology possibly viable as a surface and air disinfection option, even when workers are present. Scientific evidence suggests that combining Far-UVC 222nm with other antimicrobial agents could enhance its effectiveness in food safety. Additionally, understanding the antimicrobial mechanisms of Far-UVC and bacterial tolerance to its exposure is crucial for optimizing disinfection practices and improving decontamination strategies. This review serves as a valuable reference for developing tailored solutions in industry-driven research and development.
Source: Food Control
Authors: Shuyan Wu, Yue Wu, Xuan Lu, Xiaoqing Hu, Gale Brightwell
Language: English
Subfield: Biotechnology
Domain: Life Sciences
Open Access status: hybrid
Estimated APC paid: $4,340
Awards: G2664098325, G4037111194
OpenAlex ID: W4405987183