Development of a Dual-wavelength 222 nm/405 nm Light-based Disinfection System for Advanced Food Safety

This project has two primary objectives. In collaboration with our partners at the University of Illinois.Development of Dual Wavelength Decontamination Module: We aim to demonstrate a method for decontaminating various foodborne pathogens using a combination of 222nm and 405nm photons. Our goal is to design a compact yet high-powered irradiation module capable of demonstrating robust anti-microbial activity against bacteria, including drug-resistant strains, and viruses. This effectiveness is quantified as achieving at least a 4 log10 reduction, coupled with consistent light distribution across target food surfaces. Our approach will involve exploring various compact module designs, integrating 222 nm far-UVC microplasma lamps and 405 nm LED arrays. Through these designs, we aim to identify the most effective configurations for various treatment conditions. By the conclusion of Phase I, the individual far-UVC lamps should achieve a power output of at least 100 mW of 222 nm at their surface. Additionally, the 405 nm LED lamps' irradiation power should ideally match the 222 nm lamp in a ratio ranging between 5:1 to 10:1 (translating to the surface intensity of 25~50 mW/cm2).Validation of Inactivation Efficacy and Safety: The second objective centers on validating the deactivation efficiency of the targeted pathogens by these dual wavelengths within a processing timeframe of a few minutes. A critical aspect of this goal is ensuring human safety during the treatment. We aim to outline an optimal dual-wavelength disinfection process for foodborne pathogens under varied sample conditions. Beyond these main objectives, we will also assess food quality attributes and examine potential degradation in packaging materials under repeated treatments. The insights gleaned from these explorations will inform our transition to Phase II. As we conclude Phase I, our intent is to develop a prototype treatment system capable of achieving a 4 log reduction in the decontamination of selected airborne pathogens within a short duration.Entering Phase II, our primary focus will shift towards scaling our operations. We'll concentrate on the development and commercialization of a refined, commercial-grade system, building upon the knowledge and designs derived from Phase I. This phase will also include actual food processing field studies. Furthermore, we will lay the groundwork for scaled production capabilities, aiming to produce hundreds of systems monthly by the end of Phase II.