Surface barrier discharges for Escherichia coli biofilm inactivation: Modes of action and the importance of UV radiation.
Surface barrier discharges for Escherichia coli biofilm inactivation: Modes of action and the importance of UV radiation.
复制标题
大肠杆菌生物膜灭活的表面屏障放电:作用模式和紫外线辐射的重要性。
DOI:
10.1371/journal.pone.0247589
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发表时间:
2021
期刊:
影响因子:
3.7
通讯作者:
Walsh JL
中科院分区:
文献类型:
--
作者:
Salgado BAB;Fabbri S;Dickenson A;Hasan MI;Walsh JL
Cold plasma generated in air at atmospheric pressure is an extremely effective antimicrobial agent, with proven efficacy against clinically relevant bacterial biofilms. The specific mode of bacterial inactivation is highly dependent upon the configuration of the plasma source used. In this study, the mode of microbial inactivation of a surface barrier discharge was investigated against Escherichia coli biofilms grown on polypropylene coupons. Different modes of exposure were considered and it was demonstrated that the long-lived reactive species created by the plasma are not solely responsible for the observed microbial inactivation. It was observed that a synergistic interaction occurs between the plasma generated long-lived reactive species and ultraviolet (UV) photons, acting to increase the antimicrobial efficacy of the approach by an order of magnitude. It is suggested that plasma generated UV is an important component for microbial inactivation when using a surface barrier discharge; however, it is not through the conventional pathway of direct DNA damage, rather through the synergistic interaction between liquid in the biofilm matrix and long-lived chemical species created by the discharge.
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影响因子:
5.1
作者:
Bosshard, Franziska;Riedel, Kathrin;Egli, Thomas
通讯作者:
Egli, Thomas
影响因子:
13.6
作者:
Lai, A. C. K.;Nunayon, S. S.;Li, W. S.
通讯作者:
Li, W. S.
影响因子:
3.4
作者:
Boudam, M. K.;Moisan, M.;Massines, F.
通讯作者:
Massines, F.
影响因子:
4
作者:
Brun, P.;Bernabe, G.;Martines, E.
通讯作者:
Martines, E.
影响因子:
3.2
作者:
Hasan, M. I.;Walsh, J. L.
通讯作者:
Walsh, J. L.