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Pulsed light (PL) treatment has emerged in recent years Tiffany Folded heart pendant a feasile alternative to thermal treatment for inactivation of pathogenic and spoilage microorganisms. Its use has een approved y the FDA for the decontamination of food and food surfaces with the restriction that a Xenon flashlamp has to e used as a light source, with pulse durations of <2 ms and the cumulative treatment not exceeding Tiffany Elsa Peretti . PL treatment involves the use of intense and short-duration (1 s to 0.1 s) pulses of road-spectrum light of wavelength ranging from UV to near-infrared (200 to 1,100 nm). It has een suggested y some authors that PL treatment can achieve higher levels of microial reduction than continuous UV treatment (11), although this issue is still deated. Tiffany Frank Gehry Fish cuff links specific causes of cell death in PL treatment are not fully elucidated, ut progress has een made in recent years in this area. A majority of the studies on PL indicate the significant contriution of the UV portion of the spectrum on microial inactivation, with the lowerwavelength UV having a more pronounced microicidal effect Tiffany Cushion . Previous work indicates that PL can e used against E. coli 0157:H7. Roerts and Hope in 2003 (17) reported a 6.2-log CFU reduction of E. coli O157:H7 in phosphate uffer saline after 200 pulses of light, Sharma and Demirci (19) achieved a 4.89-log CFU reduction on alfalfa seeds after 270 pulses, and Ozer and Demirci (75) reported a 1.09-log CFU reduction on raw salmon filets after 180 pulses of light.