The Effect of Ultraviolet-C Radiation on Disinfection

Ultraviolet-C 조사의 살균 효과

  • Choi, Houng-Sik (Dept. of Physical Therapy, Hanseo University) ;
  • Choi, Kyu-Hwan (Dept. of Physical Therapy, Ansan 1 College) ;
  • Park, So-Yeon (Dept. of Rehabilitation Therapy, The Graduate School, Yonsei University)
  • 최홍식 (한서대학교 물리치료학과) ;
  • 최규환 (안산1 대학 물리치료과) ;
  • 박소연 (연세대학교 대학원 재활학과)
  • Published : 2002.09.17

Abstract

Traditionally, ultraviolet (UV) has been used for treating the pressure sore and skin wound. The effects of UVA and UVB radiation on disinfection have been reported. The purpose of this study was to examine the effectiveness of UVC radiation on disinfection of Escherichia coli, Staphylococcus aureus, Salmonella typhimurium in vitro. Three bacterium were radiated by UVC (250 nm, 20 seconds) and incubated at $37^{\circ}C$ for 24 hours at the agar culture medium. Kill rates of all three bacterium were 99.9%. UVC radiated on three kinds of bacterium for 30 or 60 seconds. Kill rates were 99.9% both 30 and 60 seconds. This data suggests that UV light at 250 nm could be a useful method to minimize infection and shorten healing time in pressure sore and skin wound condition.