I. N. Zavestovskaya, V. A. Gushchin, L. I. Russu, E. A. Cheshev, A. L. Koromyslov, I. M. Tupitsyn, A. A. Fronya, M. S. Grigoryeva, “Inactivation of coronaviruses under irradiation by UVA-range light-emitting diodes”, Kvantovaya Elektronika, 2022, Volume 52, Number 1,Pages <nobr>83

Special issue on laser biophotonics

Inactivation of coronaviruses under irradiation by UVA-range light-emitting diodes

I. N. Zavestovskaya^ab, V. A. Gushchin^c, L. I. Russu^c, E. A. Cheshev^a, A. L. Koromyslov^a, I. M. Tupitsyn^a, A. A. Fronya^ab, M. S. Grigoryeva^ba

^a P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow
^b National Research Nuclear University MEPhI, Moscow, Russia
^c Gamaleya National Centre of Epidemiology and Microbiology, Moscow, Russia

Abstract: We report the results of the development of an experimental stand based on UVA light-emitting diodes (UVA LEDs) with radiation wavelengths of 385 and 395 nm for studying experimentally the inactivation of viruses of the coronavirus family, including SARS-CoV-2. Methodological grounds are presented for determining the inactivation dose that provides a predetermined decrease in the virus titre under the impact of UVA radiation. The effect of the diode radiation divergence on the virus photoinactivation process is investigated. It is shown that UVA LEDs can be used to reduce the virus titre by 4 orders of magnitude.

Keywords: ultraviolet radiation, LED, coronaviruses, bovine coronavirus.

Received: 12.10.2021