Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2022 May;132(5):3664-3671.
doi: 10.1111/jam.15445. Epub 2022 Feb 6.

Inhibitory effects of atmospheric dielectric barrier discharge plasma against Bacillus cereus and Staphylococcus aureus on Gwamegi (semi-dried Cololabis saira)

Ji Yoon Kim  1   2 , Eun Bi Jeon  1   2 , Min Gyu Song  1   2 , Eun Ha Choi  3 , Jun Sup Lim  3 , Jinsung Choi  3 , Shin Young Park  1   2
Affiliations

Inhibitory effects of atmospheric dielectric barrier discharge plasma against Bacillus cereus and Staphylococcus aureus on Gwamegi (semi-dried Cololabis saira)

Ji Yoon Kim et al. J Appl Microbiol. 2022 May.

Abstract

Aims: The current study was conducted to investigate the effects of atmospheric dielectric barrier discharge (DBD) plasma on the reduction of B. cereus and S. aureus, both potential hazardous bacteria on Gwamegi.

Methods and results: DBD plasma devices (1.1 kV, 43 kHz, 5-60 min, N2 : 1.5 lpm for 5, 10, 20, 30 and 60 min) were used to investigate the reduction effect. In the B. cereus by DBD plasma treatment, the 5-60 min indicated a reduction of 0.2-1.2 log CFU/g. The reductions of S. aureus at the same duration time of DBD plasma were 0.1-1.1 log CFU/g. The D-values for B. cereus and S. aureus were 49.0 (R2 = 0.98) and 61.0 (R2 = 0.94) min, respectively. The pH values for 0-30 min (6.00-6.01) were not significantly different, but significant differences at 60 min (6.09). There were no significant sensorial differences in colour (6.4-5.2) and flavour (6.2-5.3), but showing significant differences in appearance (6.6-5.2), texture (6.3-5.1) and overall acceptability (6.5-5.5).

Conclusions: This study indicates that the 60 min of DBD plasma treatment resulted in >1 log CFU/g of B. cereus and S. aureus without concomitant adverse changes in pH and most sensory properties in semi-dried Gwamegi.

Significance and impact of the study: This novel DBD plasma technology can be applied in semi-dried food production and distribution processes to enhance dried fishery food hygiene and safety.

Keywords: Antimicrobials; fish (as food); food safety; microbial contamination; non-thermal processes.

PubMed Disclaimer

References

REFERENCES

    1. Brown, N. & Dowds, B.C.A. (2001) Heat and salt stress in the food pathogen Bacillus cereus. Journal of Applied Microbiology, 91, 1085-1094.
    1. Cha, B.S. (2009) Quality characteristics of dried filefish (Stephanolepis cirrhifer) treated with gamma irradiation. Journal of Radiation Industry, 3, 221-226.
    1. Cho, K.H., Lee, J.W., Kim, J.H., Ryu, G.H., Yook, H.S. & Byun, M.W. (2000) Improvement of the hygienic quality and shelf-life of Kwamegi from Cololabis Seira by gamma irradiation. Korean Journal of Food Science and Technology, 32, 1102-1106.
    1. Choi, M.S., Kim, J.Y., Jeon, E.B. and Park, S.Y. (2019) Antibacterial activity of dielectric barrier discharge plasma against main food-borne bacteria in suspensions. Korean Journal of Fisheries and Aquatic Science, 5, 617-624. Available from: https://doi.org/10.5657/KFAS.2019.0617
    1. Choi, M.S., Jeon, E.B., Kim, J.Y., Choi, E.H., Lim, J.S., Choi, J.S. and Park, S.Y. (2020) Impact of non-thermal dielectric barrier discharge plasma on Staphylococcus aureus and Bacillus cereus quality of dried blackmouth angler (Lophiomus setigerus). Journal of Food Engineering, 278, 109952. Available from: https://doi.org/10.1016/j.jfoodeng.2020.109952