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Inactivation of Bacillus subtilis Spores in Water by a Direct-Current, Cold Atmospheric-Pressure Air Plasma Microjet

机译:直流冷常压空气等离子体微喷枪灭活水中的枯草芽孢杆菌孢子

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摘要

Bacillus subtilis spores suspended in distilled water was effectively inactivated in 6 min by a direct-current atmospheric pressure non-thermal air plasma microjet. Scanning electron microscopic images show clear distortion and debris of spores after plasma treatment. Direct contribution by temperature and pH change of water as well as relatively long lived species in plasma activated water (PAW) is excluded. Short lived species (such as ~·OH, ~·O_2~- and O_2(~1△_g)) are detected in the plasma-water system by electron spin resonance spectroscopy, and are considered to be the most important agents in the inactivation process.
机译:悬浮在蒸馏水中的枯草芽孢杆菌孢子在6分钟内通过直流大气压非热空气等离子体微喷射器有效失活。扫描电子显微镜图像显示等离子处理后,孢子明显变形和碎屑。排除了水以及血浆活化水(PAW)中寿命相对较长的物种的温度和pH值变化的直接影响。通过电子自旋共振光谱法在等离子体-水系统中检测到短寿命物种(例如〜·OH,〜·O_2〜-和O_2(〜1△_g)),被认为是最重要的灭活剂处理。

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  • 来源
    《Plasma processes and polymers》 |2012年第2期|p.157-164|共8页
  • 作者单位

    College of Engineering, Peking University, Beijing, China;

    College of Engineering, Peking University, Beijing, China;

    Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China,West China College of Stomatology, Sichuan University, Chengdu, China;

    Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China,West China College of Stomatology, Sichuan University, Chengdu, China;

    Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China;

    Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China;

    Department of Applied Science and Technology, Saint Peter's College, New Jersey, USA;

    College of Engineering, Peking University, Beijing, China,Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China;

    College of Engineering, Peking University, Beijing, China,Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    bacillus subtilis; electron spin resonance; plasma activated water; plasma microjet;

    机译:枯草芽孢杆菌电子自旋共振等离子活化水;等离子微喷;

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