Comparison of continuous and pulsed light sources for photoreactivation of listeria monocytogenes

Lani, M.N. and Anderson, J.G. and MacGregor, S.J. and Woolsey, G. (2006) Comparison of continuous and pulsed light sources for photoreactivation of listeria monocytogenes. In: Society for General Microbiology 158th Meeting, 2006-04-03 - 2006-04-06. (http://www.sgm.ac.uk/meetings/pdfabstracts/warwick...)

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Abstract

Photoreactivation is a process that generates repair of ultravioletradiation (UV) damage in micro-organisms. Repair involves the DNA photolyase enzyme, which uses energy provided by light of wavelengths between 300 and 450 nm to reverse many types of DNA damage. Most studies of photoreactivation have relied on irradiation with continuous-wave (CW) light. This study examines the repair of UV-induced damage using both CW light from a bank of fluorescent lamps in a light cabinet, and pulsed light provided by a xenon flashlamp.