A new and simple approach for decontamination of food contact surfaces with gliding arc discharge atmospheric non-thermal plasma
PBN-AR
Instytucja
Wydział Elektrotechniki i Informatyki (Politechnika Lubelska)
Informacje podstawowe
Główny język publikacji
angielski
Czasopismo
FOOD AND BIOPROCESS TECHNOLOGY
ISSN
1935-5130
EISSN
Wydawca
DOI
URL
Rok publikacji
2016
Numer zeszytu
79
Strony od-do
1-12
Numer tomu
10
Identyfikator DOI
Liczba arkuszy
Autorzy
(liczba autorów: 6)
Pozostali autorzy
+ 4
Streszczenia
Język
EN
Treść
In this study, a gliding arc discharge (GAD) microplasma system was designed, and its decontamination effect was investigated on stainless steel (SS), silicone (Si), and polyethylene terephthalate (PET) surfaces artificially contaminated with 8.15 ± 0.28 log cfu/mL of Escherichia coli and 6.18 ± 0.21 log cfu/mL of Staphylococcus epidermidis. Each of the contaminated surfaces was treated with high purity air (79% nitrogen and 21% oxygen) or nitrogen plasmas for 1–10 min at varying rates of gas flow. Significant reductions of 3.76 ± 0.28, 3.19 ± 0.31, and 2.95 ± 0.94 log cfu/mL in S. epidermidis, and 2.72 ± 0.82, 4.43 ± 0.14, and 3.18 ± 0.96 log cfu/mL in E. coli on SS, Si, and PET surfaces, respectively, were achieved after 5 min of plasma treatment by using nitrogen as the plasma forming gas (p < 0.05). The temperature changes of each surface during plasma generation were lower than 35 °C and were not affected by the type of plasma forming gas. Additionally, morphological changes in the structure of E. coli and S. epidermidis after GAD plasma treatments were demonstrated using scanning electron microscopy (SEM).
Inne
System-identifier
21880
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