Monitoring and Diagnostics of Non-Thermal Plasmas in the Food Sector Using Optical Emission Spectroscopy
Non-thermal plasma technology is used in the food sector due to its many advantages such as low operating costs, fast and efficient processing at low temperatures, minimal environmental impact, and preservation of sensory and nutritional properties. In this article, the plasma was generated using a...
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2025-07-01
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| author | Sanda Pleslić Franko Katalenić |
| author_facet | Sanda Pleslić Franko Katalenić |
| author_sort | Sanda Pleslić |
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| description | Non-thermal plasma technology is used in the food sector due to its many advantages such as low operating costs, fast and efficient processing at low temperatures, minimal environmental impact, and preservation of sensory and nutritional properties. In this article, the plasma was generated using a high-voltage electrical discharge (HVED) with argon at a voltage of 35 kV and a frequency of 60 Hz. Plasma monitoring and diagnostics were performed using optical emission spectroscopy (OES) to optimise the process parameters and for quality control. OES was used as a non-invasive sensor to collect useful information about the properties of the plasma and to identify excited species. The values obtained for electron temperature and electron density (up to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>2.3</mn><mrow><mo> </mo><mi>eV</mi></mrow></mrow></semantics></math></inline-formula> and up to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mrow><mn>10</mn></mrow><mrow><mn>23</mn></mrow></msup><mo> </mo><msup><mrow><mi mathvariant="normal">m</mi></mrow><mrow><mo>−</mo><mn>3</mn></mrow></msup></mrow></semantics></math></inline-formula>) confirmed that the generated plasma is a non-thermal plasma. Therefore, the use of OES is recommended in the daily control of food processing, as this is necessary to confirm that the processes are non-thermal and suitable for the food sector. |
| format | Article |
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| institution | Kabale University |
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| spelling | doaj-art-bd90638fbe234df38b47ae8eb5650afb2025-08-20T03:36:38ZengMDPI AGApplied Sciences2076-34172025-07-011515832510.3390/app15158325Monitoring and Diagnostics of Non-Thermal Plasmas in the Food Sector Using Optical Emission SpectroscopySanda Pleslić0Franko Katalenić1Faculty of Electrical Engineering and Computing, University of Zagreb, Unska 3, 10000 Zagreb, CroatiaFaculty of Electrical Engineering and Computing, University of Zagreb, Unska 3, 10000 Zagreb, CroatiaNon-thermal plasma technology is used in the food sector due to its many advantages such as low operating costs, fast and efficient processing at low temperatures, minimal environmental impact, and preservation of sensory and nutritional properties. In this article, the plasma was generated using a high-voltage electrical discharge (HVED) with argon at a voltage of 35 kV and a frequency of 60 Hz. Plasma monitoring and diagnostics were performed using optical emission spectroscopy (OES) to optimise the process parameters and for quality control. OES was used as a non-invasive sensor to collect useful information about the properties of the plasma and to identify excited species. The values obtained for electron temperature and electron density (up to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>2.3</mn><mrow><mo> </mo><mi>eV</mi></mrow></mrow></semantics></math></inline-formula> and up to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mrow><mn>10</mn></mrow><mrow><mn>23</mn></mrow></msup><mo> </mo><msup><mrow><mi mathvariant="normal">m</mi></mrow><mrow><mo>−</mo><mn>3</mn></mrow></msup></mrow></semantics></math></inline-formula>) confirmed that the generated plasma is a non-thermal plasma. Therefore, the use of OES is recommended in the daily control of food processing, as this is necessary to confirm that the processes are non-thermal and suitable for the food sector.https://www.mdpi.com/2076-3417/15/15/8325non-thermal plasmaplasma technologyoptical emission spectroscopyhigh voltage electrical dischargeelectron temperatureelectron density |
| spellingShingle | Sanda Pleslić Franko Katalenić Monitoring and Diagnostics of Non-Thermal Plasmas in the Food Sector Using Optical Emission Spectroscopy Applied Sciences non-thermal plasma plasma technology optical emission spectroscopy high voltage electrical discharge electron temperature electron density |
| title | Monitoring and Diagnostics of Non-Thermal Plasmas in the Food Sector Using Optical Emission Spectroscopy |
| title_full | Monitoring and Diagnostics of Non-Thermal Plasmas in the Food Sector Using Optical Emission Spectroscopy |
| title_fullStr | Monitoring and Diagnostics of Non-Thermal Plasmas in the Food Sector Using Optical Emission Spectroscopy |
| title_full_unstemmed | Monitoring and Diagnostics of Non-Thermal Plasmas in the Food Sector Using Optical Emission Spectroscopy |
| title_short | Monitoring and Diagnostics of Non-Thermal Plasmas in the Food Sector Using Optical Emission Spectroscopy |
| title_sort | monitoring and diagnostics of non thermal plasmas in the food sector using optical emission spectroscopy |
| topic | non-thermal plasma plasma technology optical emission spectroscopy high voltage electrical discharge electron temperature electron density |
| url | https://www.mdpi.com/2076-3417/15/15/8325 |
| work_keys_str_mv | AT sandapleslic monitoringanddiagnosticsofnonthermalplasmasinthefoodsectorusingopticalemissionspectroscopy AT frankokatalenic monitoringanddiagnosticsofnonthermalplasmasinthefoodsectorusingopticalemissionspectroscopy |