Cold Plasma for Food Processing

Cold Plasma for Food Processing

  • Kavosh Yaran Fann-e Pooya
  • Surface plasma processing

    1. NanoScale Certification

    2. 2017/11/21
    3. 2020/11/21

    1. Certificate of Nanotechnology

    2. 2017/11/21
    3. 2020/11/21
Introduction Application Specification Advantage Of Using Nanotechnology Manual And Maintenance Safety And Package
Plasma is the fourth state of matter and is a pack of ions in which the number of positive ions equals to the number of electrons. At normal pressure plasmas are mostly hot (around several thousand degrees Celsius), so it is difficult to control them. In order to improve performance, researchers have succeeded to produce cold plasma at normal pressure and room temperature. Dielectric Barrier Discharge (DBD) is one of the most common methods for generation of cold plasma. Researchers have found a new way to inactivate bacteria using cold plasma. The cold plasma eliminates deadly viruses and can be an alternative and very apt method for fast and reliable sterilization of pharmaceutical equipment. 
DBD, as a novel and innovative way in production of cold or non-thermal plasma, is one of the methods which have been developed for sterilization. Recently, this method has been widely considered in different fields of science and technology. DBD is occurrence of an electric discharge between two metal electrodes which at least one of them is covered with dielectric material. By applying alternative voltage to the electrodes, non-thermal plasma of dielectric barrier discharge is generated in atmospheric pressure. Some applications of this technology are in food industry and agriculture. Food surface decontamination and seed germination are two attractive applications of DBD plasma.
Some applications of cold plasma are as follows:
  • Surface decontamination including food surface
  • Decomposition of chemical compounds including pesticides from food surface
  • Seed germination
  • Plasma surface processing
  • Increasing the surface hydrophilicity
Details of technical specifications are presented in the following Table.
 
In general, one of the most important issues regarding the relationship between plasma equipment and nanotechnology is the ability to create or enhance nanoscale surface roughness. In this case, it is expected that the wettability and color absorption of surfaces such as fibers or textiles increase. The other case is the presence of a surface-activated layer which noticeably improves the adhesion of coatings and nanolayers through the formation of bondings at atomic level.
  • After each session, remove the glass chamber from the device and wash it with water and detergent.
  • After each use, clean the stirrer and device upper door with water and alcohol.
  • Set up the device in a place with proper ventilation because formation of ozone gas in the test chamber is possible.
  • Set up the device in a place which makes the opening of the device upper door possible and allows using the probes completely.
  • For more details on how to use the device, refer to the device catalog and user guide.
  • Do not set up the device in a moist place or a place where may be subjected to the water; because it can cause electric shock or fire.
  • Avoid putting the device to the direct exposure of sunlight or places with temperature higher than 50 oC.
  • Be sure the earth connection is connected to the device socket.
  • Never use the gas pipes or telephone lines for earth connection. Improper connection may cause electric shock.
  • Avoid excessive bending of power cord or putting heavy objects on it.
  • Never disconnect the plug by pulling the wire out of the socket.
  • Be careful not to damage the input power cord when moving the device.
  • Do not place anything on the device door.
  • Never attempt to repair or dismantle the device. There is a risk of electric shock, device failure, or serious damage.
  • Never turn on the device in a place full of explosive gases.
  • By feeling the smell of smoke, burn, or abnormal sound from the device, immediately cut off the power cord and contact with the after-sales service of the company.
  • Prior turning on the device, make sure the device switches are in the right position.
  • Never clean the probe, chamber, housing, or inside the device directly with water. There is a risk of electric shock or serious damage.
  • Cut off the power cord before cleaning the device.
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