Application of dielectric barrier discharge plasma for the reduction of non-pathogenic Escherichia coli and E. coli O157:H7 and the quality stability of fresh oysters (Crassostrea gigas)open access
- Authors
- Choi, Man-Seok; Jeon, Eun Bi; Kim, Ji Yoon; Ha Choi, Eun; Lim, Jun Sup; Choi, Jinsung; Park, Shin Young
- Issue Date
- 15-Jan-2022
- Publisher
- Academic Press
- Keywords
- DBD plasma; E. coli; E. coli O157:H7; Glycogen; Oyster
- Citation
- LWT - Food Science and Technology, v.154
- Indexed
- SCIE
SCOPUS
- Journal Title
- LWT - Food Science and Technology
- Volume
- 154
- URI
- https://scholarworks.gnu.ac.kr/handle/sw.gnu/1742
- DOI
- 10.1016/j.lwt.2021.112698
- ISSN
- 0023-6438
1096-1127
- Abstract
- This study focuses on the efficacy of dielectric barrier discharge (DBD) plasma treatment (1.1 kV, 3 mm distance, N-2 1.5 L/min) as a non-thermal intervention to reduce non-pathogenic Escherichia coil and E. coli O157:H7 in oysters (Crassostrea gigas). Exposure times of 10-30 min by the plasma against non-pathogenic E. coli and E. coli O157:H7 resulted in a log reduction of 0.31-1.01 and 0.18-0.62, respectively, in fresh oysters. In particular, exposure to DBD plasma for 60 min indicated 2.14 log reduction (99.28% reduction) of non-pathogenic E. coli and 1.19 log reduction (93.54% reduction) of E. coli O157:H7. D 1 -values for non-pathogenic E. coli and E. coli O157:H7 were 27.78 min and 50.08 min, respectively (R-2 >= 0.98 by using a first-order kinetic model). The glycogen content (1.10-1.20 g/100 g) and texture profile (hardness, springiness, cohesiveness, resilience) of samples treated with DBD plasma did not differ significantly from that of the control (p > 0.05). Therefore, exposing oysters to DBD plasma for at least 60 min could be useful for reducing >99% of non-pathogenic E. coli and 90% of E. coli O157:H7 without causing any deleterious changes to the glycogen content and overall texture of fresh oyster.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - 해양과학대학 > Seafood science & Technology > Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.gnu.ac.kr/handle/sw.gnu/1742)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.