Value-adding drying technology to increase the utilization rate of side streams and primary raw materials from the Food Industry

Important results from the project

The project verified pilot-scale drying of seaweed (Alaria esculenta) and brewers’ spent grain (BSG). For seaweed, extensive data was generated on pretreatment, drying, energy use, yield and product quality. For BSG, the tests showed that the process works technically but requires further development for industrial scale. The project has therefore provided a clear basis for continued technical development and scale-up.

Expected long term effects

The results provide a stronger basis for scale-up, investment and commercial partnerships. For seaweed, the verified process can support continued development towards reproducible production. For spent grain, the project has reduced development risk by clarifying which areas require further work. In the long term, the solutions may reduce resource waste, extend shelf life and increase the value of food-industry side streams.

Approach and implementation

The project was carried out through practical pilot trials in Glommen, supported by laboratory analyses, documentation and market dialogues. The overall approach worked largely as planned, but the seaweed work became more extensive and operationally demanding than expected. Methods and process parameters were adjusted continuously based on the results. For spent grain, the trials provided a clearer direction for continued technical development.