Modeling of mold inactivation via cold atmospheric plasma (CAP)
Pavel Demo, Filip Přeučil, Petra Tichá, Mária Domonkos, Eliška Lokajová, Jana Jirešová
TL;DR
This paper introduces a mathematical model to predict how cold atmospheric plasma can eliminate mold, using a nonlinear equation and comparing results with real data.
Contribution
The novelty is modeling mold extinction using a nonlinear logistic equation with a density-dependent inactivation rate.
Findings
The model shows mold colonies can become extinct if plasma inactivation rate matches the maximum growth rate.
Growth curves calculated from the model align with experimental data for Aspergillus brasiliensis.
The model can predict mycelium surface coverage at any time, offering faster insights than real experiments.
Abstract
During their reproduction cycles, the omnipresent pathogens produce a broad class of mycotoxins responsible for serious health problems in living organisms. To reduce (or even to eradicate) the microorganisms from the invaded system, various conventional methods are applied in practice, sometimes with counterproductive effects. To overcome these challenges, the cold atmospheric plasma (CAP) is applied to terminate mold proliferation within the system. The paper presents a mathematical model for the elimination of microscopic filamentous types of fungi, specifically molds, by using the CAP. The evolution of mold population is described by a nonlinear logistic equation with a density-dependent inactivation rate. Exactly calculated growth curves are compared with experimental data for Aspergillus brasiliensis obtained for two plasma operating times. The results show that if the plasma…
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Taxonomy
TopicsPlasma Applications and Diagnostics · Microbial Inactivation Methods · Indoor Air Quality and Microbial Exposure