Inactivation of Shewanella putrefaciens by Plasma Activated Water

被引：74

作者：

Qi, Zhihua ^{[1
,2
]}

Tian, Enqiang ^{[1
]}

Song, Ying ^{[1
]}

Sosnin, Eduard A. ^{[4
]}

Skakun, Viktor S. ^{[4
]}

Li, Tingting ^{[3
]}

Xia, Yang ^{[1
,2
]}

Zhao, Yao ^{[1
,2
]}

Lin, XueSong ^{[1
]}

Liu, Dongping ^{[1
]}

机构：

[1] Dalian Minzu Univ, Sch Phys & Mat Engn, Dalian 116600, Peoples R China

[2] Dalian Univ Technol, Key Lab Mat Modificat Laser Ion & Electron Beams, Dalian 116024, Peoples R China

[3] Dalian Minzu Univ, Coll Life Sci, Dalian 116600, Peoples R China

[4] RAS, SB, Inst High Current Elect, Tomsk 634055, Russia

来源：

PLASMA CHEMISTRY AND PLASMA PROCESSING | 2018年 / 38卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Plasma activated water; Inactivation; Hydrogen peroxide; Nitrate; S; putrefaciens; ATMOSPHERIC-PRESSURE; ANTIMICROBIAL ACTIVITY; NONTHERMAL PLASMA; KINETICS; STERILIZATION; DISCHARGE; SPOILAGE; BACTERIA; OZONE;

D O I：

10.1007/s11090-018-9911-5

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Plasma activated water (PAW) generated by atmospheric-pressure air microplasma arrays is a solution containing a variety of reactive species. Here we investigate the effects of different applied voltage and water-activated time on bactericidal activities against Shewanella putrefaciens (S. putrefaciens). Our measurements showed that the sterilization efficiency of S. putrefaciens by PAW could be up to 2.0 Log Reduction. Scanning electron microscopy image and DNA concentration measurement showed that the S. putrefaciens cells were damaged and deformed due to the PAW treatment. The physicochemical properties of PAW treated by different applied voltage and water-activated time were evaluated, including pH value, initial PAW temperature, and the concentrations of plasma-activated species, such as H2O2, NO3-, NO2-, and O-3. Analysis indicates that the sterilization efficiency of S. putrefaciens treated by PAW was mainly determined by H2O2 concentration and pH value of PAW. This study provides a basis for the PAW potential applications in the disinfection of rotten food.

引用

页码：1035 / 1050

页数：16

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