JOURNAL OF LIGHT INDUSTRY

CN 41-1437/TS  ISSN 2096-1553

介质阻挡放电等离子体对单增李斯特菌的杀灭效果及作用机制研究

王博华,薛冬,董闪闪,白艳红

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王博华, 薛冬, 董闪闪, 等. 介质阻挡放电等离子体对单增李斯特菌的杀灭效果及作用机制研究[J]. 轻工学报, 2023, 38(3): 17-24,54. doi: 10.12187/2023.03.003
引用本文:王博华, 薛冬, 董闪闪, 等. 介质阻挡放电等离子体对单增李斯特菌的杀灭效果及作用机制研究[J]. 轻工学报, 2023, 38(3): 17-24,54.doi:10.12187/2023.03.003
shu
WANG Bohua, XUE Dong, DONG Shanshan and et al. Inactivation effect and mechanism of dielectric barrier discharge plasma against Listeria monocytogenes[J]. Journal of Light Industry, 2023, 38(3): 17-24,54. doi: 10.12187/2023.03.003
Citation:WANG Bohua, XUE Dong, DONG Shanshan and et al. Inactivation effect and mechanism of dielectric barrier discharge plasma against Listeria monocytogenes[J]. Journal of Light Industry, 2023, 38(3): 17-24,54.doi:10.12187/2023.03.003
shu

介质阻挡放电等离子体对单增李斯特菌的杀灭效果及作用机制研究

  • 18新利直播 食品与生物工程学院/河南省冷链食品质量与安全控制 重点实验室, 河南 郑州 450001

    • 作者简介:王博华(1998-),男,河南省周口市人,18新利直播 硕士研究生,主要研究方向为肉制品加工与安全控制。E-mail:wangbh1212@163.com;

  • 基金项目:国家自然科学基金项目(32072356)
    河南省重大公益专项项目(201300110100)

  • 中图分类号:TS201.3

Inactivation effect and mechanism of dielectric barrier discharge plasma againstListeria monocytogenes

  • College of Food and Biological Engineering/Henan Key Laboratory of Cold Chain Food Quality and Safety Control, Zhengzhou University of Light Industry, Zhengzhou 450001, China

  • Received Date:2022-04-25
    Accepted Date:2022-07-24

    CLC number:TS201.3

  • 摘要:采用扫描电子显微镜(SEM)、流式细胞分析、荧光染色等方法研究介质阻挡放电(Dielectric Barrier Discharge,DBD)等离子体对单增李斯特菌( Listeria monocytogenes)的杀灭效果及对其细胞形态、细胞膜变化、胞内活性氧(Reactive Oxygen Species,ROS)水平等的影响。结果表明:经放电功率为20.8 W的DBD等离子体处理80 s后, L.monocytogenes菌落数从初始8.26 lg CFU/mL降低至1.30 lg CFU/mL,其胞内ROS相对水平显著升高了9.5倍( P<0.05);DBD等离子体处理会破坏 L.monocytogenes的细胞形态,增强细胞膜通透性并使其发生去极化,且细胞损伤程度随处理时间的延长而显著增加;经DBD等离子体处理后,生理盐水的pH值显著降低,氧化还原电位( ORP)、NO 3 -、NO - 2和H 2O 2浓度均显著升高。DBD等离子体杀灭 L.monocytogenes的作用机制是其可损伤细胞膜、诱导氧化应激损伤等。
    Abstract:The effects of dielectric barrier discharge (DBD) plasma on the inactivation effect, the cell morphology, membrane changes and intracellular reactive oxygen species (ROS) levels of Listeria monocytogeneswere investigated by scanning electron microscopy (SEM), flow cytometry, fluorescence staining and so on. The results showed that the population of L.monocytogeneswas reduced from an initial level of 8.26 lg CFU/mL to 1.30 lg CFU/mL after DBD plasma treatment at 20.8 W for 80 s, and the intracellular ROS level increased by 9.5-folds ( P<0.05). DBD plasma treatment caused damage in the morphology and cell membrane of L.monocytogenesin a treatment time-dependent manner. Moreover, DBD plasma caused the depolarization of the cell membrane of L.monocytogenes. In addition, after DBD plasma treatment, the pH value of normal saline decreased significantly, the oxidation-reduction potential and concentration of NO 3 -, NO - 2and H 2O 2increased significantly. In summary, DBD plasma could inactivate L.monocytogenesby disrupting cell membranes and inducing oxidative stress damage.
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    王博华, 薛冬, 董闪闪, 等. 介质阻挡放电等离子体对单增李斯特菌的杀灭效果及作用机制研究[J]. 轻工学报, 2023, 38(3): 17-24,54. doi: 10.12187/2023.03.003
    引用本文:王博华, 薛冬, 董闪闪, 等. 介质阻挡放电等离子体对单增李斯特菌的杀灭效果及作用机制研究[J]. 轻工学报, 2023, 38(3): 17-24,54.doi:10.12187/2023.03.003
    shu
    WANG Bohua, XUE Dong, DONG Shanshan and et al. Inactivation effect and mechanism of dielectric barrier discharge plasma against Listeria monocytogenes[J]. Journal of Light Industry, 2023, 38(3): 17-24,54. doi: 10.12187/2023.03.003
    Citation:WANG Bohua, XUE Dong, DONG Shanshan and et al. Inactivation effect and mechanism of dielectric barrier discharge plasma against Listeria monocytogenes[J]. Journal of Light Industry, 2023, 38(3): 17-24,54.doi:10.12187/2023.03.003
    shu

    介质阻挡放电等离子体对单增李斯特菌的杀灭效果及作用机制研究

      作者简介:王博华(1998-),男,河南省周口市人,18新利直播 硕士研究生,主要研究方向为肉制品加工与安全控制。E-mail:wangbh1212@163.com
    • 18新利直播 食品与生物工程学院/河南省冷链食品质量与安全控制 重点实验室, 河南 郑州 450001
    • 收稿日期: 2022-04-25
    • 录用日期: 2022-07-24
    基金项目:国家自然科学基金项目(32072356)河南省重大公益专项项目(201300110100)

    摘要:采用扫描电子显微镜(SEM)、流式细胞分析、荧光染色等方法研究介质阻挡放电(Dielectric Barrier Discharge,DBD)等离子体对单增李斯特菌(Listeria monocytogenes)的杀灭效果及对其细胞形态、细胞膜变化、胞内活性氧(Reactive Oxygen Species,ROS)水平等的影响。结果表明:经放电功率为20.8 W的DBD等离子体处理80 s后,L.monocytogenes菌落数从初始8.26 lg CFU/mL降低至1.30 lg CFU/mL,其胞内ROS相对水平显著升高了9.5倍(P<0.05);DBD等离子体处理会破坏L.monocytogenes的细胞形态,增强细胞膜通透性并使其发生去极化,且细胞损伤程度随处理时间的延长而显著增加;经DBD等离子体处理后,生理盐水的pH值显著降低,氧化还原电位(ORP)、NO3-、NO-2和H2O2浓度均显著升高。DBD等离子体杀灭L.monocytogenes的作用机制是其可损伤细胞膜、诱导氧化应激损伤等。

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