Project Description

Surface Disinfection Lighting Systems

In the field of food preservation, irradiation is considered a safe and effective technology for a precise range of applications. It reduces losses and eliminates food-borne diseases. It therefore promotes better marketing of food. In 1983, the Codex Alimentarius Commission of the Joint Food Standards Program of the Food and Agriculture Organization of the United Nations (FAO) and the World Health Organization (WHO) adopted a global standard in relation to irradiation of food. This ensures governments and consumers that this technology is safe but also effective.

We have developed an innovative product that will be useful for the food industry. We have set up a lighting system for surface disinfection that resorts to the visible and non-visible light spectrum. Together, they induce photobiomodulation that stimulates plant growth and the control of certain pathogenic microorganisms. We also know that iron-dependent bacteria such as E. coli, Listeria and Bacillus become vulnerable when lighting combines other wavelengths to achieve their elimination. It is also useful against various types of fungi such as blue mould (Penicillium), black mould (Aspergillus) and Botrytis cinerea (a necrotrophic fungus that affects many plant species).

Our surface disinfection systems eliminate up to 99.9% (in some cases more) bacteria and fungi.

We know the following test results from different research around the world:
In this chart ADSOL lighting systems provides surface disinfection systems that eliminates up to 99.9% (in some cases more) bacteria and fungi

• E. coli O157: H7
~ 99.9% (3 log reduction)
• Listeria monocytogenes
~ 99.9% (3 log reduction)
• Penicillium citrinum
~ 99.7% (3 log reduction)
• Lactobacillus brevis
~ 99.0% (2 log reduction)
• Pediococcus cerevisiae
~ 99.9% (3 log reduction)

Our lighting system is a soft and selective microorganisms eliminator compared to UV-C. There is a major difference between the UV-C and the light spectra of our lighting system. UV-C only kills microorganisms on the surface and only penetrates into an extremely thin layer of material (less than 1 mm). However, the lighting of our systems can reach microbes in layers of material up to 4 inches (10 cm) deep.

The light spectra of our lighting systems are non-ionizing. This refers to a type of electromagnetic radiation for which the quantum of energy transported by each photon is insufficient to cause the atoms and molecules ionization. Non-ionizing radiation includes the near-ultraviolet range, visible light, infrared, microwaves and radio waves.

Optical Radiation

Infrared, visible light and ultraviolet are the elements that make up optical radiation. Light from our surface disinfection lighting systems is part of this group.

The Canadian Food Inspection Agency (CFIA) has already expressed its support for the proposed use of ionizing radiation to process fresh or frozen raw ground beef. The proposed sources of ionizing radiation are gamma rays of cobalt 60 or cesium 137, electrons accelerated to 10 million volts (10 MeV) and X-rays with energies of up to 5 MeV.

Our non-ionizing lighting systems are not harmful unlike ionizing irradiation systems. The latter can degrade vitamins and other nutrients, thus diminishing the food nutritional qualities. It can also have a negative impact on the foods’ taste, odour and texture.

Finally, our asset is that we can combine various wavelengths in the visible and non-visible spectrum and find the ones that will be most appropriate for each type of application involving surface decontamination. In addition, our system allows easy installation and removal of LED tubes. As we do the assembly and design of these luminaries in LaSalle, we have the opportunity to prepare a customized lighting system for your projects.


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