The microalgae Haematococcus sp. contains valuable substances such as proteins, carbohydrates and fats. Until now, only the antioxidant pigment astaxanthin has been used, while the rest remains unused. The addingASTA project is investigating which other valuable substances are contained in the algae – such as other carotenoids, e.g. lutein, or healthy fatty acids such as omega-3 DHA and EPA.
Instead of disposing of the residual biomass, the project is investigating whether it can be used for animal feed (e.g. for fish, dogs and cats) or even for bio-based plastics. In the long term, it should also be approved for use in foodstuffs, for example in meat and fish alternatives (‘Beyond’ Meat / Fish).
One bioeconomic challenge in algae production is coupled energy flow. The project is developing a special LED heat exchanger that makes production more efficient than before. Modern LEDs with liquid cooling and the use of renewable energy (wind and solar power) will make it possible to cultivate algae even in winter.
The waste heat generated during production is put to good use – in this case, to dry the algae biomass. This makes the entire production process more efficient and sustainable.
Dr. Stefan Hindersin, Head of Department Sea & Sun Organics
