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Shaw, P., Kumar, N., Mumtaz, S., Lim, J.S., Jang, J.H., Kim, D., Sahu, B.D., Bogaerts, A. and Choi, E.H. (2021) Evaluation of Non-Thermal Effect of Microwave Radiation and Its Mode of Action in Bacterial Cell Inactivation. Scientific Reports, 11, Article No. 14003.
https://doi.org/10.1038/s41598-021-93274-w

has been cited by the following article:

• TITLE: Microwave-Assisted Inactivation of Fomite-Microorganism Systems: Energy Phase-Space Projection

  AUTHORS: Victor J. Law, Denis P. Dowling

  KEYWORDS: Bacteria, MS2, Hepatitis C Virus, Human Immunodeficiency Virus, Influenza Virus, Disruption, Inactivation, Microwave Oven, Data Analysis

  JOURNAL NAME: American Journal of Analytical Chemistry, Vol.13 No.7, July 28, 2022

  ABSTRACT: This paper describes the use of log-linear energy phase-space projections to analyze microwave-assisted inactivation of bacteria and viruses under different fomite conditions within multimode microwave ovens. The ovens are operated at a cavity-magnetron frequency of 2.45 ± 01 GHz. Porous fomites (moist face towels, cotton swabs, kitchen sponges, and scrubbing pads, cigarette filters and N95-like respirators); along with non-porous hard surface syringe fomites are studied. The fomites are classed as dielectric; and absorb microwave energy to varying degrees depending on their complex dielectric permittivity. Microorganism resilience to microwave stress (defined as ≥4 log10 reduction in inactivation) when mapped using iso-volume trend-lines in energy phase-space reveals the persistence imparted by the fomite, and can be mapped between different microwave ovens. Microorganism resilience to thermal microwave-assisted treatment increases from vegetative Gram-negative to vegetative Gram-positive and on to Gram-positive spores. Bacteriophage MS2 and influenza viruses have an intermediate resilience dependency. It is shown that linear-scaled fomite temperature against process time graphs can differentiate between non-thermal and thermal micro-wave-assisted treatment of microorganisms.