Control of pathogenic bacteria on the surface of rolling fruits by an atmospheric pressure air dielectric barrier discharge system
Control of pathogenic bacteria on the surface of rolling fruits by an atmospheric pressure air dielectric barrier discharge system
复制标题
常压空气介质阻挡放电系统对滚动水果表面致病菌的控制
DOI：
10.1088/1361-6463/ab6e9b
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发表时间：
2020-02
影响因子：
3.4
通讯作者：
Wang Wenchun
中科院分区：
文献类型：
--
作者：
Zhao Yao;Xia Yang;Xi Ting;Zhu Di;Zhang Qiang;Qi Zhihua;Liu Dongping;Wang Wenchun
大气压冷等离子体技术在食品安全领域具有巨大的应用潜力。设计了一种新型的大气压空气介质阻挡放电装置，直接在球形水果表面产生等离子体。该装置由石英管、附着在石英管外壁上的高压电极和放置在石英管内表面上作为接地电极的水果组成。增强型电荷耦合探测器图像显示，被处理物表面与石英管内壁之间形成了均匀扫描的放电通道。当处理过的物质在装置中滚动时，均匀的等离子体直接在水果表面形成。研究了等离子体对滚动水果表面病原微生物的杀菌效果。金黄色葡萄球菌（S.等离子体处理15 s后，滚动状态下果实表面的细菌（金黄色葡萄球菌）比静态下减少1.57 log（10）CFU。与初始菌浓度相比，S.经等离子体处理15 s后，1cm（2）表面的金黄色葡萄球菌减少了5.9 log（10）CFU。结果表明，新型等离子体处理装置和S.对水果表面上的金黄色葡萄球菌进行灭菌，而不会对水果表面造成热损伤。
Atmospheric pressure cold plasma technology has great application potential in the field of food safety. A novel atmospheric air dielectric barrier discharge device has been designed to generate plasma directly on the surface of spherical fruit. This device consists of the quartz tube, the high-voltage electrode attached to the outer wall of the quartz tube, and the fruit placed onto the inner surface of the quartz tube, acting as the ground electrode. The intensified charge-coupled detector images show that a uniformly scanning discharge channel is formed between the surface of treated substance and the inner wall of quartz tube. When the treated substance is rolled in the device, the uniform plasma is directly formed over the fruit surface. The bactericidal efficiency of plasma against pathogenic microorganisms on rolling fruit surface has been studied. The number of Staphylococcus aureus (S. aureus) on the surface of fruit treated by plasma for 15 s in rolling state is 1.57 log(10) CFU less than that of the static state. Compared with the initial bacterial concentration, the number of S. aureus on the surface of 1 cm(2) decreases by 5.9 log(10) CFU after plasma treatment of rolling fruit for 15 s. In conclusion, the fruit surface is uniformly treated by the novel plasma device and S. aureus on the fruit surface was sterilized without causing thermal damage to the fruit surface.
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影响因子：
1.5
作者：
Ying Song;Dongping Liu;Longfei Ji;Wenchun Wang;Jinhai Niu;Xianhui Zhang
通讯作者：
Ying Song;Dongping Liu;Longfei Ji;Wenchun Wang;Jinhai Niu;Xianhui Zhang
影响因子：
5.5
作者：
Je-Wook Kim;P. Puligundla;C. Mok
通讯作者：
Je-Wook Kim;P. Puligundla;C. Mok
影响因子：
7
作者：
Ramazzina, Ileana;Berardinelli, Annachiara;Rocculi, Pietro
通讯作者：
Rocculi, Pietro
影响因子：
3.5
作者：
Yingde Song;Dongping Liu;Longfei Ji;Wenchun Wang;Pengchao Zhao;C. Quan;Jinhai Niu;Xianhui Zhang
通讯作者：
Yingde Song;Dongping Liu;Longfei Ji;Wenchun Wang;Pengchao Zhao;C. Quan;Jinhai Niu;Xianhui Zhang
影响因子：
3.5
作者：
Qianqian Lu;Dongping Liu;Ying Song;Renwu Zhou;Jinhai Niu
通讯作者：
Qianqian Lu;Dongping Liu;Ying Song;Renwu Zhou;Jinhai Niu