Virucidal Effects of Dielectric Barrier Discharge Plasma on Human Norovirus Infectivity in Fresh Oysters (Crassostrea gigas)open access
- Choi, Man-Seok; Jeon, Eun Bi; Kim, Ji Yoon; Choi, Eun Ha; Lim, Jun Sup; Choi, Jinsung; Ha, Kwang Soo; Kwon, Ji Young; Jeong, Sang Hyeon; Park, Shin Young
- Issue Date
- dielectric barrier discharge plasma; food safety; human norovirus; propidium monoazide; shellfish
- FOODS, v.9, no.12
- Journal Title
- This study investigates the effects of dielectric barrier discharge (DBD) plasma treatment (1.1 kV, 43 kHz, N-2 1.5 L/min, 10 similar to 60 min) on human norovirus (HuNoV) GII.4 infectivity in fresh oysters. HuNoV viability in oysters was assessed by using propidium monoazide (PMA) as a nucleic acid intercalating dye before performing a real-time reverse transcription-quantitative polymerase chain reaction (RT-qPCR). Additionally, the impact of the DBD plasma treatment on pH and Hunter colors was assessed. When DBD plasma was treated for 60 min, the HuNoV genomic titer reduction without PMA pretreatment was negligible (<1 log copy number/mu L), whereas when PMA treatment was used, HuNoV titer was reduced to >1 log copy number/mu L in just 30 min. D-1 and D-2-value of HuNoV infectivity were calculated as 36.5 and 73.0 min of the DBD plasma treatment, respectively, using the first-order kinetics model (R-2 = 0.98). The pH and Hunter colors were not significantly different (p > 0.05) between the untreated and DBD-plasma-treated oysters. The results suggest that PMA/RT-qPCR could help distinguish HuNoV infectivity without negatively affecting oyster quality following >30 min treatment with DBD plasma. Moreover, the inactivation kinetics of nonthermal DBD plasma against HuNoV in fresh oysters might provide basic information for oyster processing and distribution.
- Files in This Item
- There are no files associated with this item.
- Appears in
- 해양과학대학 > Seafood science & Technology > Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.