Optimizing fish feed pellets production with X-ray

Challenge

Transportation is one of the tricky steps of the value chain for fish feed pellet manufacturers. In fact, oil - and the subsequently added nutrients - has a tendency to seep out of the pellets during transportation, causing manufacturers a loss of costly resources. Besides, the growing demand for high-fat products puts even more pressure on the pellets’ cabability to retain the oil phase

Collaboration

BioMar suspected that the porous structure of their pellets might play a key role in oil retention. The company engaged in a collaboration with the Imaging Industry Portal at DTU in order to gain insights into the porous structure of their fish feed pellets. A master student was appointed to carry out measurements and data analysis for the company, under the supervision of researchers from the University of Copenhagen and DTU

Results

The pellets were measured with and without oil, before and after coating and centrifugation, revealing the optimal pore structure and size to retain oil in the pellets. 

Perspectives

The new insights provided by 3D imaging will allow BioMar to explore new ways of optimizing pellet production to ensure maximum oil retention, e.g. by testing alternative raw materials and their impact on the pellets’ pore structure.