Quantitative evaluation of SARS-CoV-2 inactivation using a deep ultraviolet light-emitting diode.

Quantitative evaluation of SARS-CoV-2 inactivation using a deep ultraviolet light-emitting diode.
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DOI:
10.1038/s41598-021-84592-0
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发表时间:
2021-03-03
期刊:
影响因子:
4.6
通讯作者:
Nomaguchi M
Nomaguchi M
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Minamikawa T;Koma T;Suzuki A;Mizuno T;Nagamatsu K;Arimochi H;Tsuchiya K;Matsuoka K;Yasui T;Yasutomo K;Nomaguchi M

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严重急性呼吸综合征冠状病毒2(SARS-CoV-2)的灭活技术无疑是减缓2019冠状病毒病(COVID-19)传播的关键措施。基于深紫外线对微生物和病毒的抗病毒作用,深紫外线发光二极管(DUV-LED)将是一种有希望的候选人,用于检测SARS-CoV-2。然而,由于不同病毒的灭活效果存在差异,需要对DUV-LED照射对SARS-CoV-2的灭活情况进行定量评估。在本研究中,我们量化的照射剂量的DUV-LED必要的SARS-CoV-2。为此,我们确定了适合于SARS-CoV-2照射的培养基,并使用在265、280或300 nm的中心波长下工作的市售DUV-LED优化了照射装置。在此条件下,我们成功地分析了SARS-CoV-2感染性与DUV-LED在各个波长下的照射剂量之间的关系,而没有无关的生物效应。总之,265 nm、280 nm和300 nm的总剂量分别为1.8 mJ/cm 2、3.0 mJ/cm 2和23 mJ/cm 2,才能杀灭99.9%的SARS-CoV-2。我们的研究结果提供了定量的抗病毒效果的深紫外线照射对SARS-CoV-2,作为对SARS-CoV-2灭活技术的基础知识。
Inactivation technology for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is certainly a critical measure to mitigate the spread of coronavirus disease 2019 (COVID-19). A deep ultraviolet light-emitting diode (DUV-LED) would be a promising candidate to inactivate SARS-CoV-2, based on the well-known antiviral effects of DUV on microorganisms and viruses. However, due to variations in the inactivation effects across different viruses, quantitative evaluations of the inactivation profile of SARS-CoV-2 by DUV-LED irradiation need to be performed. In the present study, we quantify the irradiation dose of DUV-LED necessary to inactivate SARS-CoV-2. For this purpose, we determined the culture media suitable for the irradiation of SARS-CoV-2 and optimized the irradiation apparatus using commercially available DUV-LEDs that operate at a center wavelength of 265, 280, or 300 nm. Under these conditions, we successfully analyzed the relationship between SARS-CoV-2 infectivity and the irradiation dose of the DUV-LEDs at each wavelength without irrelevant biological effects. In conclusion, total doses of 1.8 mJ/cm2 for 265 nm, 3.0 mJ/cm2 for 280 nm, and 23 mJ/cm2 for 300 nm are required to inactivate 99.9% of SARS-CoV-2. Our results provide quantitative antiviral effects of DUV irradiation on SARS-CoV-2, serving as basic knowledge of inactivation technologies against SARS-CoV-2.
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发表时间: 2004-10
影响因子: 3.1
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