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Effect of atmospheric pressure plasma on inactivation of pathogens inoculated onto bacon using two different gas compositions

机译：大气压等离子体对使用两种不同气体成分培根培根的病原体灭活的影响

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摘要

Atmospheric pressure plasma (APP) is an emerging non-thermal pasteurization method for the enhancement of food safety. In this study, the effect of APP on the inactivation of pathogens inoculated onto bacon was observed. Sliced bacon was inoculated with Listeria monocytogenes (KCTC 3596), Escherichia coli [KCTC 1682), and Salmonella Typhimurium (KCTC 1925). The samples were treated with APP at 75,100, and 125 W of input power for 60 and 90 s. Two gases, helium (10 lpm) or a mixture of helium and oxygen, (101pm and 10 seem, respectively) were used for the plasma generation. Plasma with helium could only reduce the number of inoculated pathogens by about 1-2 Log cycles. On the other hand, the helium/oxygen gas mixture was able to achieve microbial reduction of about 2-3 Log cycles. The number of total aerobic bacteria showed 1.89 and 4.58 decimal reductions after plasma treatment with helium and the helium/oxygen mixture, respectively. Microscopic observation of the bacon after plasma treatment did not find any significant changes, except that the L~*-value of the bacon surface was increased. These results clearly indicate that APP treatment is effective for the inactivation of the three pathogens used in this study, although further investigation is needed for elucidating quality changes after treatment.
机译：大气压等离子体（APP）是一种新兴的非热巴氏灭菌法，用于提高食品安全性。在这项研究中，观察到APP对培根培根病原体灭活的影响。将切片的培根接种单核细胞增生性李斯特菌（KCTC 3596），大肠杆菌（KCTC 1682）和鼠伤寒沙门氏菌（KCTC 1925）。使用APP在75,100和125 W的输入功率下对样品进行60和90 s的处理。使用两种气体氦气（10 lpm）或氦气和氧气的混合物（分别为101pm和10 sccm）生成等离子体。带有氦气的血浆只能减少1-2个对数周期的病原体数量。另一方面，氦气/氧气混合物能够实现约2-3对数循环的微生物减少。分别用氦气和氦气/氧气混合物进行等离子体处理后，总好氧细菌数量减少了1.89和4.58位。等离子体处理后的培根的显微镜观察没有发现任何明显的变化，只是培根表面的L〜*值增加了。这些结果清楚地表明，APP治疗对于本研究中使用的三种病原体的灭活是有效的，尽管需要进一步研究以阐明治疗后的质量变化。

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  • 来源
    《Food microbiology》 |2011年第1期|p.9-13|共5页
  • 作者

    Binna Kim; Hyejeong Yun; Samooel Jung; Yeonkook Jung; Heesoo Jung; Wonho Choe; Cheorun Jo;

  • 作者单位

    Department of Animal Science and Biotechnology, Chungnam National University, 220, Gung-Dong, Yuseong-Gu, Daejeon 305-764, Republic of Korea;

    rnDepartment of Animal Science and Biotechnology, Chungnam National University, 220, Gung-Dong, Yuseong-Gu, Daejeon 305-764, Republic of Korea;

    rnDepartment of Animal Science and Biotechnology, Chungnam National University, 220, Gung-Dong, Yuseong-Gu, Daejeon 305-764, Republic of Korea;

    rnDepartment of Animal Science and Biotechnology, Chungnam National University, 220, Gung-Dong, Yuseong-Gu, Daejeon 305-764, Republic of Korea;

    rnDepartment of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea;

    rnDepartment of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea;

    rnDepartment of Animal Science and Biotechnology, Chungnam National University, 220, Gung-Dong, Yuseong-Gu, Daejeon 305-764, Republic of Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    atmospheric pressure plasma; inoculation; pathogens; bacon; gas composition;

    机译：大气压等离子体接种病原体培根;气体成分;

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