P10 Proteins and chitin in the press cake from production of oil from the copepod Calanus finmarchicus

P10 Proteins and chitin in the press cake from production of oil from the copepod Calanus finmarchicus

Therese Udin1, Alice Marie Pedersen2 and Ragnar L Olsen1

1Norwegian College Of Fishery Science, Uit The Arctic University Of Norway, Tromsø, NOR
2Calanus AS, Tromsø, NOR

A search for alternative sources of oils rich in long-chain polyunsaturated omega-3 fatty acids (n-3 LC-PUFA) has led to exploitation of the zooplankton Calanus finmarchicus, which is abundant in the Norwegian Sea. It is harvested by surface trawling during the most lipid-rich stages during the spring and summer months. Most of the lipids are wax esters with a high content of the omega-3 fatty acid; stearidonic acid (18:4n-3) EPA (20:5n-3) and DHA (22:6n-3). The company Calanus AS extracts oil (Calanus Oil®) from C. finmarchicus and several publications have indicated positive health effects that could also come from other components than 20:5n-3 and 22:6n-3 alone. During the production of the oil two other products are obtained; a protein hydrolysate and a press cake. The aim of this master thesis is to investigate the properties of the proteins and chitin in the press cake. Such knowledge may contribute to commercial utilization.