Pulsed Ultraviolet Light Decontamination Research Report

This research report examines the effectiveness of pulsed ultraviolet (PUV) light as a decontamination method for food contact surfaces, specifically conveyor materials, in a food processing environment. Conducted at Penn State, the study utilized XENON Corporation's PUV light systems to assess antimicrobial efficacy against lactic acid bacteria (LAB) and Escherichia coli K12 NSR. The research involved various conveyor materials, including rigid-linked polymer, chain-link, PTFE fabric, and pliable polymer, under different treatment parameters such as energy levels and surface conditions. Results indicated that PUV light significantly reduced microbial presence, particularly on pre-cleaned surfaces. The study also noted variations in surface temperature during treatment, which could influence the effectiveness of the decontamination process. The findings suggest that PUV light is a viable method for ensuring hygiene in food processing, with implications for food safety across various applications, including food service and packaging.