Research on the effect of pulsed UV light on microbial photoreactivation

Yanping Chen; Qihui Cheng

doi:10.1117/12.2690192

17 August 2023 Research on the effect of pulsed UV light on microbial photoreactivation

Yanping Chen, Qihui Cheng

Proceedings Volume 12757, 3rd International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2023); 127570S (2023) https://doi.org/10.1117/12.2690192
Event: 3rd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2023), 2023, Kunming, China

Abstract

UV-LED is popular in the disinfection industry due to its advantages of being environmentally friendly, easy to set up, and small in size. The pulsed irradiation of UV-LED, which has significant reference value for effective sterilizing and longlasting bacterial suppression, is used in this research to study and execute a pulsed UV disinfection approach. The study concentrated on the effectiveness of pulsed UV light in inactivating E.coli and inhibiting its photoreactivation. According to the experimental findings, when the peak optical power of pulsed UV was enhanced by 8.4 times, the log inactivation value increased by 2.6 times compared to continuous UV, and the photoreactivation rate decreased by 21.1% in just 4 hours. Achieved were the consequences of effective sterilization and photoreactivation inhibition.

Citation Download Citation

Yanping Chen and Qihui Cheng "Research on the effect of pulsed UV light on microbial photoreactivation", Proc. SPIE 12757, 3rd International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2023), 127570S (17 August 2023); https://doi.org/10.1117/12.2690192

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