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首页> 外文期刊>Journal of Applied Physics >A morphological study of the changes in the ultrastructure of a bacterial biofilm disrupted by an ac corona discharge in air
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A morphological study of the changes in the ultrastructure of a bacterial biofilm disrupted by an ac corona discharge in air

机译：空气中交流电晕放电破坏的细菌生物膜超微结构变化的形态学研究

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摘要

The morphology of bacterial cells and biofilms subjected to a low frequency (～ 10~5 Hz) ac (～ 10~(-1)A) corona discharge was investigated using electron microscopy. A low-frequency ac corona discharge in air is shown to have a bactericidal and bacteriostatic effect on Escherichia coli M17 culture at both the cellular and population levels. Corona exposure inhibits the formation of a microbial community and results in the destruction of formed biofilms. This paper presents data on changes in the uitrastructure of cells and biofilms after corona treatment. Our results suggest that the E. coli M17 cells inside biofilms are affected with results similar to sub-lethal and lethal thermal exposure. Some of the biological aspects of colony and biofilm cells death are evaluated. Morphological changes in the uitrastructure of the biofilms under corona treatment are described. Our results indicate that the heating effect is the main factor responsible for the corona-induced inactivation of bacteria.
机译：使用电子显微镜研究了在低频（〜10〜5 Hz）ac（〜10〜（-1）A）电晕放电下细菌细胞和生物膜的形态。空气中的低频交流电晕放电显示出在细胞水平和群体水平上对大肠杆菌M17培养具有杀菌和抑菌作用。电晕暴露会抑制微生物群落的形成，并导致形成的生物膜被破坏。本文介绍了电晕处理后细胞和生物膜超微结构变化的数据。我们的结果表明，生物膜内部的大肠杆菌M17细胞受到的影响与亚致死和致死性热暴露相似。评估了菌落和生物膜细胞死亡的某些生物学方面。描述了电晕处理后生物膜超微结构的形态变化。我们的结果表明，加热效果是造成电晕诱导细菌失活的主要因素。

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  • 来源
    《Journal of Applied Physics》 |2016年第6期|063302.1-063302.5|共5页
  • 作者

    Olga Stepanova; Oksana Rybalchenko; Alexander Astafiev; Olga Orlova; Anatoly Kudryavtsev; Valentina Kapustina;

  • 作者单位

    Physical Faculty, Saint Petersburg State University, St. Petersburg, Russia;

    Facuity of Medicine, Saint Petersburg State University, St. Petersburg, Russia;

    Physical Faculty, Saint Petersburg State University, St. Petersburg, Russia;

    Facuity of Medicine, Saint Petersburg State University, St. Petersburg, Russia;

    Physical Faculty, Saint Petersburg State University, St. Petersburg, Russia;

    Facuity of Medicine, Saint Petersburg State University, St. Petersburg, Russia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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