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首页> 外文会议>Plasma for bio-decontamination, medicine and food security >Decontamination of Bacillus subtilis Spores in a Sealed Package Using a Non-thermal Plasma System
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Decontamination of Bacillus subtilis Spores in a Sealed Package Using a Non-thermal Plasma System

机译：使用非热等离子体系统对密封包装中的枯草芽孢杆菌孢子进行去污

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摘要

The safety of packaged food and medical devices is a major concern to consumers and government officials. Recent inventions (PK-1 and PK-2) based on the principles of non-thermal, atmospheric plasma has shown significant reduction in bacterial contamination inside a sealed package. The objective of this study was to evaluate the PK-1 and PK-2 systems in the reduction of Bacillus subtilis spores using packages containing air or modified atmosphere (MA) gas (65% O_2/30% CO_2/5% N_2). The experimental design consisted of the following parameters: (1) two voltage conditions: 13.5 kV with 1.0 cm electrode gap (PK-1) and 80 kV with 4.5 cm electrode gap (PK-2), (2) two treatment conditions: inside and outside the field of ionization, (3) PK-1 and PK-2 optimized treatment times: 300 and 120 s, respectively, and (4) two package gas types: air and modified atmosphere (MA) gas (65% O_2/30% CO_2/5% N_2). Measurements included: (1) bacterial reductions of Bacillus subtilis var. niger (B. atrophaeus), (2) ozone, nitrous oxides (NOx), and carbon monoxide concentrations, and (3) relative humidity.
机译：食品和医疗器械包装的安全性是消费者和政府官员的主要关注点。基于非热大气等离子体原理的最新发明（PK-1和PK-2）已显示出密封包装内细菌污染的显着减少。这项研究的目的是评估使用空气或改良的大气（MA）气体（65％O_2 / 30％CO_2 / 5％N_2）的包装在减少枯草芽孢杆菌孢子中的PK-1和PK-2系统。实验设计由以下参数组成：（1）两种电压条件：13.5 kV，电极间隙为1.0 cm（PK-1），80 kV，电极间隙为4.5 cm（PK-2），（2）两种处理条件：内部在电离领域之外，（3）PK-1和PK-2优化处理时间分别为300和120 s，以及（4）两种包装气体类型：空气和改良气氛（MA）气体（65％O_2 / 30％CO_2 / 5％N_2）。测量包括：（1）枯草芽孢杆菌变种的细菌减少。尼日尔（B. atrophaeus），（2）臭氧，一氧化二氮（NOx）和一氧化碳浓度，以及（3）相对湿度。

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  • 来源
  • 会议地点 Demanovska Dolina(SK)
  • 作者

    Kevin M. Keener; J.L. Jensen; V.P. Valdramidis; E. Byrne; J. Connolly; J.P. Mosnier; P.J. Cullen;

  • 作者单位

    Department of Food Science, Purdue University, 745 Agriculture Mall Drive, West Lafayette, IN 47907, USA;

    Department of Food Science, Purdue University, 745 Agriculture Mall Drive, West Lafayette, IN 47907, USA;

    School of Food Science and Environmental Health, Dublin Institute of Technology, Cathal Brugha St, Dublin 1, Ireland Biosystems Engineering, School of Agriculture, Food Science and Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland;

    School of Food Science and Environmental Health, Dublin Institute of Technology, Cathal Brugha St, Dublin 1, Ireland;

    School of Physical Sciences and NCPST, Dublin City University, Glasnevin, Dublin 9, Ireland;

    School of Physical Sciences and NCPST, Dublin City University, Glasnevin, Dublin 9, Ireland;

    School of Food Science and Environmental Health, Dublin Institute of Technology, Cathal Brugha St, Dublin 1, Ireland;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生物工程学（生物技术）;
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