Journal
IEEE TRANSACTIONS ON PLASMA SCIENCE
Volume 50, Issue 11, Pages 4782-4787Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPS.2022.3214145
Keywords
Antifungal activity; decontamination; fruit storage; fungi; inactivation alternative technique; plasma; post-harvest
Categories
Funding
- National Institute of Surface Engineering [CNPQ-430863/2016-0, CNPq-465423/2014-0]
- National Council for the Improvement of Higher Education (CAPES)
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This article investigates the inactivation of Alternaria sp. using cold atmospheric plasma (CAP) and compares the results with two conventional techniques. The findings indicate that specific plasma treatment duration and voltage pulse can effectively inactivate Alternaria sp. spores. Conventional treatment methods require higher concentrations of NaDCC to achieve similar inactivation.
In this article, the inactivation of Alternaria sp. is investigated using cold atmospheric plasma (CAP) and the results compared with two conventional techniques: 1) sodium dichloroisocyanurate (NaDCC) and 2) quaternary ammonium compounds (QAC). CAP generated by a pulsed corona discharge device was evaluated against suspension of spore of Alternaria sp. (5 $\times$ 10 $<^>{3}$ conidia.mL $<^>{-1})$ inside a test tube. The results were compared with conventional techniques of water disinfection by NaDCC (200 and 400 ppm) or QAC (1000 ppm). Plasma treatment duration time greater than or equal to 3 min, using a voltage pulse of 20 kV, and greater than or equal to 9 min, using a voltage pulse of 10 kV, was effective in the inactivation. For conventional treatment, spores were only effectively inactivated when concentration of 400 ppm of NaDCC.
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