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
Inactivation effect and mechanism of dielectric barrier discharge plasma against Listeria monocytogenes
-
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。
-
关键词:
- 介质阻挡放电等离子体 /
- 单增李斯特菌 /
- 杀灭效果 /
- 作用机制
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 monocytogenes were investigated by scanning electron microscopy (SEM), flow cytometry, fluorescence staining and so on. The results showed that the population of L.monocytogenes was 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.monocytogenes in 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 NO3-, NO-2 and H2O2 increased significantly. In summary, DBD plasma could inactivate L.monocytogenes by disrupting cell membranes and inducing oxidative stress damage. -
-
[1]
刘辉,任婧寰,伍雅婷,等.2018年全国食物中毒事件流行特征分析[J].中国食品卫生杂志,2021,33(1):114-117.
-
[2]
王雯雯,相启森,白艳红.UV-LEDs技术在食品杀菌保鲜领域中的应用研究进展[J].轻工学报,2022,37(1):46-54.
-
[3]
WU D,FEREIDOUN F,ALIRI E B M,et al.Microbial response to some nonthermal physical technologies[J].Trends in Food Science&Technology,2020,95:107-117.
-
[4]
相启森,刘秀妨,刘胜男,等.大气压冷等离子体技术在食品工业中的应用研究进展[J].食品工业,2018,39(7):267-271.
-
[5]
BOURKE P,ZIUZINA D,BOEHM D,et al.The potential of cold plasma for safe and sustainable food production[J]. Trends in Biotechnology,2018,36(6):615-626.
-
[6]
相启森,董闪闪,郑凯茜,等.大气压冷等离子体在食品农药残留和真菌毒素控制领域的应用研究进展[J].轻工学报,2022,37(3):1-9.
-
[7]
EKEZIE F G C,SUN D W,CHENG J H.A review on recent advances in cold plasma technology for the food industry:Current applications and future trends[J].Trends in Food Science&Technology,2017,69:46-58.
-
[8]
DASAN B G,BOYACI I H.Effect of cold atmospheric plasma on inactivation of Escherichia coli and physicochemical properties of apple, orange, tomato juices,and sour cherry nectar[J].Food and Bioprocess Technology,2018,11(2):334-343.
-
[9]
相启森,张嵘,范刘敏,等.大气压冷等离子体在鲜切果蔬保鲜中的应用研究进展[J].食品工业科技,2021,42(1):368-372.
-
[10]
陈玥,李书红,孟琬星,等.常压冷等离子体对食源性腐败菌失活作用机制研究[J].食品研究与开发,2021,42(5):71-76.
-
[11]
LI M L,LI X A,HAN C,et al.Physiological and metabolomic analysis of cold plasma treated fresh-cut strawberries[J].Journal of Agricultural and Food Chemistry,2019,67(14):4043-4053.
-
[12]
DONG S S,FAN L M,MA Y F,et al.Inactivation of polyphenol oxidase by dielectric barrier discharge (DBD) plasma:Kinetics and mechanisms[J].LWT-Food Science and Technology,2021,145:111322.
-
[13]
XIANG Q S,LIU X F,LI J G,et al.Effects of dielectric barrier discharge plasma on the inactivation of Zygosaccharomyces rouxii and quality of apple juice[J].Food Chemistry,2018,254:201-207.
-
[14]
ROSENBERG M,AZEVEDO N F,IVASK A.Propidium iodide staining underestimates viability of adherent bacterial cells[J].Scientific Reports,2019,9:6483.
-
[15]
KIM D K,KIM S J,KANG D H.Bactericidal effect of 266 to 279 nm wavelength UVC-LEDs for inactivation of Gram positive and Gram negative foodborne pathogenic bacteria and yeasts[J].Food Research International,2017,97:280-287.
-
[16]
PAN Y Y,CHENG J H,LV X Y,et al.Assessing the inactivation efficiency of Ar/O2 plasma treatment against Listeria monocytogenes cells:Sublethal injury and inactivation kinetics[J]. LWT-Food Science and Technology,2019,111:318-327.
-
[17]
AKAGAWA M,SHIGEMITSU T,SUYAMA K.Production of hydrogen peroxide by polyphenols and polyphenol-rich beverages under quasi-physiological conditions[J].Bioscience,Biotechnology,and Biochemistry,2003,67(12):2632-2640.
-
[18]
ALI M,CHENG J H,SUN D W.Effect of plasma activated water and buffer solution on fungicide degradation from tomato (Solanum lycopersicum) fruit[J].Food Chemistry,2021,350:129195.
-
[19]
LIAO X Y,LI J,MUHAMMAD A I,et al.Application of a dielectric barrier discharge atmospheric cold plasma (Dbd-Acp) for Eshcerichia coli inactivation in apple juice[J].Journal of Food Science,2018,83(2):401-408.
-
[20]
CHEN C Z,COOPER S L.Interactions between dendrimer biocides and bacterial membranes[J].Biomaterials,2002,23(16):3359-3368.
-
[21]
BOOYENS J,THANTSHA M S.Fourier transform infra-red spectroscopy and flow cytometric assessment of the antibacterial mechanism of action of aqueous extract of garlic (Allium sativum) against selected probiotic Bifidobacterium strains[J].BMC Complementary and Alternative Medicine,2014,14:289.
-
[22]
GUEDES J P D,DE SOUZA E L.Investigation of damage to Escherichia coli,Listeria monocytogenes and Salmonella enteritidis exposed to Mentha arvensis L.and M.piperita L.essential oils in pineapple and mango juice by flow cytometry[J].Food Microbiology,2018,76:564-571.
-
[23]
KALYANARAMAN B,DARLEY-USMAR V,DAVIES K J A,et al.Measuring reactive oxygen and nitrogen species with fluorescent probes:Challenges and limitations[J].Free Radical Biology&Medicine,2012,52(1):1-6.
-
[24]
朱育攀.大气压低温等离子体对金黄色葡萄球菌的杀菌效应研究[D].郑州:郑州大学,2019.
-
[25]
PAN Y Y,ZHANG YCHENG J H,et al.Inactivation of Listeria monocytogenes at various growth temperatures by ultrasound pretreatment and cold plasma[J]. LWT-Food Science and Technology,2020,118:108635.
-
[26]
GONZALEZ-AGUILAR G A,WANG C Y,BUTA J G.Maintaining quality of fresh-cut mangoes using antibrowning agents and modified atmosphere packaging[J].Journal of Agricultural and Food Chemistry,2000,48(9):4204-4208.
-
[27]
SU X,TIAN Y,ZHOU H Z,et al.Inactivation efficacy of nonthermal plasma-activated solutions against newcastle disease virus[J].Applied and Environmrntal Microbiology,2018,84(9):E02836-17.
-
[28]
THIRUMDAS R,KOTHAKOTA A,ANNAPURE U,et al.Plasma activated water (PAW):Chemistry, physico-chemical properties, applications in food and agriculture[J].Trends in Food Science&Technology,2018,77:21-31.
-
[29]
LUKES P,DOLEZALOVA E,SISROVA I,et al.Aqueous-phase chemistry and bactericidal effects from an air discharge plasma in contact with water:Evidence for the formation of peroxynitrite through a pseudo-second-order post-discharge reaction of H2O2 and HNO2[J].Plasma Sources Science&Technology,2014,23(1):015019.
-
[30]
LIAO X Y,SU Y,LIU D H,et al.Application of atmospheric cold plasma-activated water (PAW) ice for preservation of shrimps (Metapenaeus ensis)[J].Food Control,2018,94:307-314.
-
[31]
KAUSHIK N K,GHIMIRE B,LI Y,et al.Biological and medical applications of plasma activated media,water and solutions[J].Biological Chemistry,2019,400(1):39-62.
-
[32]
CABISCOL E,TAMARIT J,ROS J.Oxidative stress in bacteria and protein damage by reactive oxygen species[J].International Microbiology,2000,3(1):3-8.
-
[1]
计量
- PDF下载量: 10
- 文章访问数: 2866
- 引证文献数: 0