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  • Dienes phenomenon test_P. mirabilis
  • Fluorescence_Fusobacterium necrophorum, F. nucleatum and F. species
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Fluorescence_Fusobacterium necrophorum, F. nucleatum and F. species

  • General

    • long wave (365 nm) UV-light / medium dependent
      Fusobact spec                           yellow-green
      Porphyromonas spec               orange to brick red
      Prevotella spec                         orange to brick red             (only young cultures)
      Veillonella parvula                    red
      Clostridium difficile                  pale yellow to bright yellow

      SEE WEBSITE: Fusobacterium necrophorum and Prevotella corporis

      UV light, short for Ultraviolet Light, is a type of light energy making up one part of the electromagnetic spectrum, which spectrum includes gamma and x-rays, UV light, visible light, infrared rays, microwaves, and radio waves, listed in order of decreasing frequency and increasing wavelength. 

      UV light thus has a wavelength shorter than that of visible light, and can not be detected by the human eye.  While UV light itself is invisible, it causes many substances to glow or fluoresce in a variety of colors visible to the human eye. 

      This ability to make the invisible visible makes UV lamps valuable for mineral prospecting, criminal investigations, postal stamp evaluation, and bacteria 

      Longwave, has a wavelength of from 320 to 400 nanometers.  A nanometer is a unit of length used to define wavelengths of energies in the electromagnetic spectrum, equaling one millionth of a millimeter.

  • History

  • Related

  • References


      ErasmusMC, ErasmusMC

      C. difficile bacteria fluoresces under UV light. / Credit: Centers for Disease Control and Prevention