Definition of photobleaching in English:



mass nounBiochemistry
  • Loss of colour by a pigment (such as chlorophyll or rhodopsin) when illuminated.

    • ‘Unfortunately, it causes considerable photobleaching because the same fluorophores are under constant illumination.’
    • ‘Another advantage of two-photon excitation is the decreased extent of photobleaching and photodamage above and below the focal plane.’
    • ‘The porphyrin solutions were handled in the dark to avoid any photobleaching.’
    • ‘The photoproduct again undergoes photobleaching during the second illumination.’
    • ‘Changes of state, photobleaching, and photocycling often involve subtle changes in tertiary structure.’