Inactivation of Shiga-toxin-producing Escherichia coli, Salmonella enterica and natural microflora on tempered wheat grains by atmospheric cold plasma

Thomas-Popo, Emalie; Mendonça, Aubrey F.; Misra, N.N.; Little, Allison; Wan, Zifan; Moutiq, Rkia; Coleman, Shannon; Keener, Kevin M.

doi:10.1016/j.foodcont.2019.04.025

Cited by 43 publications

(21 citation statements)

References 46 publications

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“…This is in no consonance with numerous authors who observed a higher resistance of yeast to plasma treatment, what is likely due to its thick and rigid cell wall (Nishime et al, 2017;Sedghizadeh et al, 2012). However, the present findings are consistent with those previous reports which attribute a higher susceptibility of yeast in a food matrix to plasma treatments (Dasan, Boyaci, & Mutlu, 2017;Thomas-Popo et al, 2019).…”

Section: Inactivation Of Microorganismssupporting

confidence: 84%

Application of atmospheric pressure cold plasma to sanitize oak wine barrels

Sainz-García

González‐Marcos

Múgica‐Vidal

et al. 2021

LWT

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Section: Inactivation Of Microorganismssupporting

confidence: 84%

Application of atmospheric pressure cold plasma to sanitize oak wine barrels

Sainz-García

González‐Marcos

Múgica‐Vidal

et al. 2021

LWT

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“…7−12 For example, in agricultural applications, NTAP can inactivate Shiga-toxin-producing Escherichia coli, Salmonella enterica, and natural microflora on tempered wheat grains. 13 Furthermore, the plasma inactivation of Nosema bombycis spores for the management of pebrine disease, as well as the inactivation of Cladosporium fulvum and Staphylococcus aureus was reported. 14−16 However, depending on the power supply frequency (AC, DC), the ambient gas pressure, and the electrode structures, atmospheric nonthermal discharge plasma can take several forms, such as corona discharge, dielectric barrier discharge, gliding arc discharge, glow discharge, or spark discharge.…”

Section: ■ Introductionmentioning

confidence: 99%

Electrohydraulic Streamer Discharge Plasma-Enhanced Alternaria brassicicola Disinfection in Seed Sterilization

Suwannarat

Thammaniphit

Srisonphan

2021

ACS Appl. Mater. Interfaces

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As emerging chemical-free and eco-friendly technologies, nonthermal (gas discharge) plasma and (liquid phase) plasma-activated water (PAW) offer exceptional microbial disinfection solutions for biological, medical, environmental, and agricultural applications. Herein, we present electrohydraulic streamer discharge plasma (ESDP), which combines streamer discharge plasma (SDP) and PAW generated at a gas–liquid interface, to sterilize Chinese kale (Brassica oleracea var. alboglabra) seeds contaminated with Alternaria brassicicola (A. brassicicola). The results showed that the ESDP treatment of A. brassicicola-inoculated seeds provides a ∼75% reduction of A. brassicicola (incident percentage) compared with nontreated seeds. Likewise, the healthy seedling percentage of the plasma-treated seeds was significantly improved to ∼70%, while that of the nontreated seeds remained at ∼15%. A microscopic examination was performed, and it confirmed that ESDP can damage the A. brassicicola spores attached to Chinese kale seeds and lead to severe morphological abnormalities after treatment. Also, an electric field simulation was performed, and it indicated that the strongly localized electric field at the liquid–gas interface on the seed surface boundary had initiated local breakdown of the gas at the air–liquid interface, resulting in exceptional physical–chemical reactions for antimicrobial efficacy beyond typical plasma treatments. Moreover, the optical emission spectra and physicochemical properties (pH, conductivity, and oxidation–reduction potential) showed that inactivation is mainly associated with the reactive oxygen–nitrogen species in the liquid and gas phases. We believe that this work is of great interest when using electrical discharge plasma on liquid interfaces in food, agricultural, and medical industries.

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“…Regarding food CP application, several studies reported its effect against microorganisms (bacteria: Bacillus spp., Escherichia coli, Salmonella spp., Staphylococcus aureus -and fungi: Aspergillus flavus, A. parasiticus, Penicillium spp.) (Selcuk et al, 2008;Han et al, 2016;Thomas-Popo et al, 2019;Hou et al;. The investigations were carried out for different fruits, grains and pulses (Misra et al, 2011;Mitra et al, 2013;Dasan et al, 2016;Devi et al, 2017;Ukuku et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Effect of cold plasma on black beans (Phaseolus vulgaris L.), fungi inactivation and micro-structures stability

Runtzel

Silva²,

Silva

et al. 2019

Emir J Food Agric

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The Cold Plasma (CP) treatment efficiency to inactivate naturally fungi contaminated beans (Phaseolus vulgaris L.), Class black, and the effects in micro-structures stability were investigated. Kernels were exposed to CP (8 kv intensity and 510W power) at different times (5, 10, 20 and 30 min) followed by incubation to verify the antifungal effect and their micro-structural resistance through microscopy (stereo –SM and scanning electron - SEM) observation. The treatment was effective to fungal inactivation when exposed to CP (10-30 min). It also inhibited bean germination during the longest treatment exposure (20-30 min). Regarding germination, only when CP was applied during the shortest period of time (5 min) had a positive effect (improved its speed: hypocotyl & radicle length increased), when compared to Control. Some morphological alterations were registered by SM, either on testae (wrinkling) and cotyledons (color changes). Indeed, through SEM, both testae and cotyledon structures showed the disrupting effects on their cell membranes during the treatment more power. The CP treatment, under the current conditions applied, showed effective for fungi inactivation, although it affected some kernel micro-structures and germination. Therefore, further studies will be carried out regarding adjustments on CP conditions, to improve treated beans quality.

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Inactivation of Shiga-toxin-producing Escherichia coli, Salmonella enterica and natural microflora on tempered wheat grains by atmospheric cold plasma

Cited by 43 publications

References 46 publications

Application of atmospheric pressure cold plasma to sanitize oak wine barrels

Application of atmospheric pressure cold plasma to sanitize oak wine barrels

Electrohydraulic Streamer Discharge Plasma-Enhanced Alternaria brassicicola Disinfection in Seed Sterilization

Effect of cold plasma on black beans (Phaseolus vulgaris L.), fungi inactivation and micro-structures stability

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