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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.1
- 수록면
- 61 - 79 (19page)
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초록· 키워드
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Objectives: The objective of this study was to examine the effect of non-thermal dielectric barrier discharge(DBD) plasma on decontamination of Staphylococcus aureus(S. aureus) and Escherichia coli(E. coli) as common pathogens. Methods: This experiment was carried out in a chamber($0.64m^3$)designed by the authors. The plasma was continuously generated by a non-thermal DBD plasma generator(Model TB-300, Shinyoung Air tech, Korea). Suspensions of S. aureus and E. coli of 0.5 McFarland standard($1.5{\times}10^8CFU/mL$) were prepared using a Densi-Check photometer(bio $M{\acute{e}}rieux$, France). The suspensions were diluted1:1000 in sterile PBS solutions(approximately$10^{4-5}CFU/mL$) and inoculated on tryptic soy agar(TSA) in Petri dishes. The Petri dishes(80mm internal diameter)were exposed to the non -thermal DBD plasma in the chamber. Results: The results showed that 95% of S. aureus colonies were killed after a six-hour exposure to the DBD plasma. In the case of E. coli, it took two hours to kill 100% of the colonies. The gram-negative E. coli had a greater reduction than the gram-positive S. aureus. This difference may be due to the structure of their cell membranes. The thickness of gram-positive bacteria is greater than that of gram-negative bacteria. The S. aureus is more resistant to DBD plasma exposures than is E. coli. It should be noted that average concentrations of ozone, a byproduct of the DBD plasma generator, were monitored throughout the experiment and the results were well below the criteria, 50 ppb, recommended by the Korean Ministry of the Environment. Thus, non-thermal DBD plasma is deemed safe for use in hospital and public facilities. Conclusions: There was evidence that non-thermal DBD plasma can effectively kill S. aureus and E. coli. The results indicate that DBD plasma technology can greatly contribute to the control of infections in hospitals and other public and private facilities.
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참고문헌 (54)
참고문헌 신청
Bogaerts A / 2002 / Gas discharge plasmas and their application / Spectrochim Acta Part B 57(4):609~658
Bollela VR / 1999 / McFarland nephelometer as a simple method to estimate the sensitivity of the polymerase chain reaction using mycobacterium tuberculosis as a research tool / Braz J Med Biol Res 32(9):1073~1076
Chae HJ / 2001 / Signal transduction of nitric oxide donor-induced protection in hydrogen peroxide- mediated apoptosis in H9C2 cardiomyoblasts / J Immunopharmacology andImmunotoxicology 23(2):187~204
Choi EH / 2015 / Plasma bioscience and medicines / Korean J Vacuum Society 2(4):9~15
Donay J-L / 2007 / Evaluation of the inoculation procedure using a 0.25 McFarland standard for the BD phoenix automated microbiology system / J Clin Microbiol 45(12):4088~4089
Bollela VR / 1999 / McFarland nephelometer as a simple method to estimate the sensitivity of the polymerase chain reaction using mycobacterium tuberculosis as a research tool / Braz J Med Biol Res 32(9):1073~1076
Chae HJ / 2001 / Signal transduction of nitric oxide donor-induced protection in hydrogen peroxide- mediated apoptosis in H9C2 cardiomyoblasts / J Immunopharmacology andImmunotoxicology 23(2):187~204
Choi EH / 2015 / Plasma bioscience and medicines / Korean J Vacuum Society 2(4):9~15
Donay J-L / 2007 / Evaluation of the inoculation procedure using a 0.25 McFarland standard for the BD phoenix automated microbiology system / J Clin Microbiol 45(12):4088~4089
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