In this study, we investigated the antimicrobial effects of plasma activated fine droplet (PAD) produced from arc discharge plasma on planktonic Listeria monocytogenes and Escherichia coli O157:H7. NaCl (0.9%, w/v) was used as the feeding solution for the plasma discharge. The inactivation mechanism of the PAD treatment was also investigated. PAD mainly contains H 2 O 2 and OCl − , which play a significant role in the inactivation process against L. monocytogenes and E. coli O157:H7. The population of L. monocytogenes and E. coli O157:H7 was significantly reduced by approximately 3 and 4 log units, respectively, within 5 min of exposure to PAD. However, the bactericidal effects of PAD against L. monocytogenes and E. coli O157:H7 showed different trends by showing 0.58 and 4.13 log reductions, respectively, after 1 min of PAD exposure time. The change of membrane integrity was evaluated using two ...

中文翻译：

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电弧放电等离子体产生的血浆活化细小液滴对浮游性单核细胞增生性李斯特菌和大肠杆菌O157：H7的抗菌作用及其机理

在这项研究中，我们研究了电弧放电等离子体产生的血浆活化细滴（PAD）对浮游性单核细胞增生李斯特菌和大肠杆菌O157：H7的抗菌作用。NaCl（0.9％，w / v）用作等离子体放电的进料溶液。还研究了PAD处理的失活机理。PAD主要包含H 2 O 2和OCl-，它们在单核细胞增生李斯特菌和大肠杆菌O157：H7的失活过程中起着重要作用。在暴露于PAD的5分钟内，单核细胞增生李斯特菌和O157：H7大肠杆菌的种群分别分别减少了约3和4 log个单位。但是，PAD对单核细胞增生李斯特菌和大肠杆菌O157：H7的杀菌作用在暴露PAD 1分钟后分别显示出0.58和4.13 log的减少，显示出不同的趋势。