Single Cell Proteins from Biorefinaries and Geothermal Power Plants as protein source for aquatic an

Purpose and goal

The goal of the project was to use microorganisms to convert industrial residual streams (i.e. emissions from geothermal power plants and residual streams from biorefineries) to Single cell protein for use as fishmeal replacement in fish feed. The project was implemented according to plan and the goal was met: Single cell protein was produced from industrial residual streams and was used to produce various types of fish feed. The fish feed was evaluated through fish farming experiments.

Results and expected effects

Cultivation experiments with different types of microorganisms in various industrial residual streams were tested and optimized in lab scale. Pilot bioreactors were thereafter used to produce sufficient quantities of single cell protein for subsequent feed and feeding trials. Different variants of fish feed was produced in which different proportions of the fish meal was replaced with single cell protein. Feeding experiment with the fish feed variants resulted in very promising results in terms of fish growth.

Approach and implementation

The project was conducted in accordance with the project plan. A slight time extension of the project was however required because some parts of the project were more time consuming than expected. The collaboration between the project participants worked well and continued collaborations between the partners are expected.