Comparative assessment of UV-C radiation and non-thermal plasma for inactivation of foodborne fungal spores suspension in vitro .

Autor:	Kulišová M; University of Chemistry and Technology, Prague, Department of Biotechnology Technická 5, 166 28, Praha 6 Prague Czech Republic marketa.kulisova@vscht.cz., Rabochová M; Research Centre Rez, Department of Material Analysis Hlavní 130, 250 68, Husinec-Řež Czech Republic.; Czech Technical University in Prague, Faculty of Biomedical Engineering nám. Sítná 3105 272 01 Kladno Czech Republic., Lorinčík J; Research Centre Rez, Department of Material Analysis Hlavní 130, 250 68, Husinec-Řež Czech Republic., Maťátková O; University of Chemistry and Technology, Prague, Department of Biotechnology Technická 5, 166 28, Praha 6 Prague Czech Republic marketa.kulisova@vscht.cz., Brányik T; Research Institute of Brewing and Malting Lípová 15 120 44 Prague Czech Republic., Hrudka J; University of Chemistry and Technology, Prague, Department of Physics and Measurements Technická 5, 166 28, Praha 6 Prague Czech Republic., Scholtz V; University of Chemistry and Technology, Prague, Department of Physics and Measurements Technická 5, 166 28, Praha 6 Prague Czech Republic., Jarošová Kolouchová I; University of Chemistry and Technology, Prague, Department of Biotechnology Technická 5, 166 28, Praha 6 Prague Czech Republic marketa.kulisova@vscht.cz.
Jazyk:	angličtina
Zdroj:	RSC advances [RSC Adv] 2024 May 23; Vol. 14 (24), pp. 16835-16845. Date of Electronic Publication: 2024 May 23 (Print Publication: 2024).
DOI:	10.1039/d4ra01689k
Abstrakt:	Fungal contamination poses a persistent challenge to industries, particularly in food, healthcare, and clinical sectors, due to the remarkable resilience of fungi in withstanding conventional control methods. In this context, our research delves into the comparative efficacy of UV radiation and non-thermal plasma (NTP) on key foodborne fungal contaminants - Alternaria alternata , Aspergillus niger , Fusarium culmorum , and Fusarium graminearum . The study examined the impact of varying doses of UV radiation on the asexual spores of all mentioned fungal strains. Simultaneously, the study compared the effects of UV radiation and NTP on the metabolic activity of cells after spore germination and their subsequent germination ability. The results revealed that UV-C radiation (254 nm) did not significantly suppress the metabolic activity of cells after spore germination. In contrast, NTP exhibited almost 100% effectiveness on both selected spores and their subsequent germination, except for A. niger . In the case of A. niger , the effectiveness of UV-C and NTP was nearly comparable, showing only a 35% decrease in metabolic activity after 48 hours of germination, while the other strains ( A. alternata , F. culmorum , F. graminearum ) exhibited a reduction of more than 95%. SEM images illustrate the morphological changes in structure of all tested spores after both treatments. This study addresses a crucial gap in existing literature, offering insights into the adaptation possibilities of treated cells and emphasizing the importance of considering exposure duration and nutrient conditions (introduction of fresh medium). The results highlighted the promising antimicrobial potential of NTP, especially for filamentous fungi, paving the way for enhanced sanitation processes with diverse applications. Competing Interests: There are no conflicts to declare. (This journal is © The Royal Society of Chemistry.)
Databáze:	MEDLINE
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