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In-package Nonthermal Plasma Degradation of Pesticides on Fresh Produce
Misra, N.; Pankaj, Shashi; Walsh, Tony; O'Regan, Finbarr; Bourke, Paula; Cullen, Patrick
In-package nonthermal plasma (NTP) technology is a novel technology for the decontamination of foods and biological materials. This study presents the first report on the potential of the technology for the degradation of pesticide residues. A cocktail of pesticides, namely Azoxystrobin, Cyprodinil, Fludioxonil and Pyriproxyfen was tested on strawberries. The concentrations of these pesticides were monitored in priori and post- plasma treatment using GC-MS/MS. An applied voltage and time dependent degradation of the pesticides was observed for treatment voltages of 60, 70 and 80 kV and treatment durations ranging from 1 to 5 min, followed by 24 h in-pack storage. The electrical characterisation revealed the operation of the discharge in a stable filamentary regime. The discharge was found to generate reactive oxygen and excited nitrogen species as observed by optical emission spectroscopy.
Keyword(s): nonthermal plasma; dielectric barrier discharge; pesticide; GC-MS/MS; Atomic, Molecular and Optical Physics; Food Chemistry; Food Processing; Other Chemical Engineering; Plasma and Beam Physics
Publication Date:
2014
Type: Journal article
Peer-Reviewed: Unknown
Contributor(s): Irish Research Council; Embark Fellowship
Institution: Dublin Institute of Technology
Citation(s): Articles
Publisher(s): Dublin Institute of Technology
File Format(s): application/pdf
First Indexed: 2014-02-18 05:36:09 Last Updated: 2017-12-14 07:16:26