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Title: Application of Pinhole Plasma Jet Activated Water against Escherichia coli, Colletotrichum gloeosporioides, and Decontamination of Pesticide Residues on Chili (Capsicum annuum L.)
Authors: Sawangrat, Choncharoen; Phimolsiripol, Yuthana; Leksakul, Komgrit; Thanapornpoonpong, Sa-nguansak; Sojithamporn, Phanumas; Lavilla, Maria; Castagnini, Juan Manuel; Barba, Francisco J.; Boonyawan, Dheerawan
Abstract: Plasma activated water (PAW) generated from pinhole plasma jet using gas mixtures of argon (Ar) and 2\% oxygen (O-2) was evaluated for pesticide degradation and microorganism decontamination (i.e., Escherichia coli and Colletotrichum gloeosporioides) in chili (Capsicum annuum L.). A flow rate of 10 L/min produced the highest concentration of hydrogen peroxide (H2O2) at 369 mg/L. Results showed that PAW treatment for 30 min and 60 min effectively degrades carbendazim and chlorpyrifos by about 57\% and 54\% in solution, respectively. In chili, carbendazim and chlorpyrifos were also decreased, to a major extent, by 80\% and 65\% after PAW treatment for 30 min and 60 min, respectively. E. co/i populations were reduced by 1.18 Log CFU/mL and 2.8 Log CFU/g with PAW treatment for 60 min in suspension and chili, respectively. Moreover, 100\% of inhibition of fungal spore germination was achieved with PAW treatment. Additionally, PAW treatment demonstrated significantly higher efficiency (p < 0.05) in controlling Anthracnose in chili by about 83\% compared to other treatments.
Keywords: pesticides; cold plasma; decontamination; plasma activated water; chili (Capsicum annuum L.); pinhole plasma jet; UV-C STIMULATION; NONTHERMAL PLASMA; POTATO-TUBERS; FOOD; INACTIVATION; REDUCTION; DENSITY; SOAKING; STRIPS; FRUITS
Issue Date: 2022
Publisher: MDPI
Type: Article
DOI: 10.3390/foods11182859
E-ISSN: 2304-8158
Funder: Agricultural Research Development Agency (ARDA) [CRP 6105020930]
Appears in Publication types:Artículos científicos

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