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Raslysation technology

Bringing clarity to unclear liquids with UV technology

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Pasteurization is a widely used technology for preserving food. Traditional processes use heat and are therefore usually associated with high energy consumption, the formation of off-flavors and the loss of natural ingredients. Lyras A/S has developed a non-thermal pasteurization process, based on UV technology, which is particularly suitable for unclear liquids, e.g. dairy products.

Raslysation technology

Raslysation technology © Lyras

Raslysation technology

Well-known pasteurization technologies such as HPP (high-pressure treatment) and PEF (pulsed electric fields) effectively kill bacteria and germs, but often put a strain on product quality; UV light, on the other hand, is gentler, but does not work in opaque liquids. So the raslysation technology is based on a combination of UV light with light filters and a turbulent flow system in coil shaped tube. Through the use of light filters, wavelengths of the UV source that have a negative effect on product quality can be filtered out, resulting in gentle product treatment and the valuable ingredients are preserved.

Addition of turbulent flow

In order to ensure that the entire liquid is evenly but not excessively exposed to UV light, which is particularly important for unclear liquids, the system has been supplemented with a constant turbulent flow. By means of a coil, and by using the centrifugal forces, the particles reach the outer surfaces of the coil, where they are exposed to UV light. Raslysation, therefore, is a non-thermal technology that treats cold as well as hot opaque liquids and liquid products without the light shining into the liquid.

This UV-based technology typically requires 90% less energy and consumes more than 60% less water than conventional heating or cooling pasteurization processes, combining efficiency and high product quality with resource conservation. In addition, an application for other product areas is also conceivable.

Further informations: www.lyras.com

FoodTec Award 2024, Silver medal

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