Effect of pulsed xenon flash light (PLS) treatment on the inactivation of 13 food-related microorganisms
including food-poisoning bacteria in liquid environment was investigated. Inactivation ratio was proportional
to the irradiation energy and irradiation flush number. Higher inactivation was achieved in
transparent environment such as water, phosphate buffer and physiological saline. On the other hand,
pulsed xenon flash light treatment could not inactivate microorganisms in Tryptic Soy Broth. Irradiation
energy 500 J and 1 time pulse treatment brought about above 5 order inactivation in all used strains, and
it was indicated that PLS treatment was effective for inactivating food-related microorganisms including
food-poisoning bacteria.