농업과학연구 (Korean Journal of Agricultural Science)

  • 제50권3호
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  • Pages.417-425
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  • 2023
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  • 2466-2402(pISSN)
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  • 2466-2410(eISSN)
충남대학교 농업과학연구소 (Institute of Agricultural Science, CNU)
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Inactivation influences on Escherichia coli DS5α by irradiation with 405 nm violet-light

  • Young-Sun Kim (Department of Horticultural Science, Daegu University) ;
  • Mun-Jin Choi (Department of Horticultural Science, Daegu University) ;
  • Dae-Young Lee (Kingstar Lighting LTD Co.) ;
  • Sang-Ook Kang (Department of Advanced Material Chemistry, Korea University Sejong Campus) ;
  • Geung-Joo Lee (Department of Horticultural Science and Department of Smart Agriculture System, Chungnam National University)
  • 투고 : 2023.05.30
  • 심사 : 2023.07.18
  • 발행 : 2023.09.01
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초록

Because an irradiation of 405 nm violet light could have a strong energy, it was used to be sterilized against various microbes in the indoor air condition or fresh food. Escherichia coli is a representative bio-pollutant in the indoor air-borne bacteria, and a hygienic microbe in the horticultural food. This study evaluated the inactivation influences on E. coli DS5α after exposure to 405 nm violet-light (VL) by investigating irradiating time, and the vertical and horizonal distance from light source. The illumination of 405 nm VL was inversely proportional to the distance from the VL source. E. coli DS5α on nutrient agar (NA) was inactivated approximately 50% more than the control when irradiated at 65 cm from 405 nm VL for 3 hours. When compared to the control, E. coli DS5α was inactivated approximately 50% within 70 cm from 405 nm VL for 3 hours. As it was irradiated for 3 hours 70 cm away from 405 nm VL, the horizonal distance from the point was negatively correlated to the inactivation of E. coli DS5α. These results indicated that the inactivation of E. coli DS5α grown on NA medium needs to be irradiated with 405 nm within 70 cm from the light source for 3 hours.

키워드

과제정보

This work was supported by the Korea Medical Device Development Fund grant funded by the Korea government (the Ministry of Science and ICT, the Ministry of Trade, Industry and Energy, the Ministry of Health & Welfare, the Ministry of Food and Drug Safety) (Project Number: HW20C2186, KMDF_PR_20200901_0000).

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