Algae growth is depending on light irradiation, temperature, facility location, medium composition, pH value, CO2 supply and oxygen emission. Designable biomass does not describe the genetic modification of organisms but the manipulation of the chemical composition of a single species by changing the cultivation parameters. Besides the purposeful selection of suitable algae species according to their compounds (protein, carbohydrate and lipid content) the cultivation conditions have to be considered. The cultivation technology in an enclosed system provides the opportunity for production of designable biomass with reproducible cultivation conditions and reduced contamination risk. Depending on their reaction to nutrient deficiency and / or light availability some algae build up lipid storages whereas others favor carbohydrates as storage products. In an optimal supplied culture, which is characterized by high growth rates is the protein fraction dominant. However, lipid contents of up to 45 % (w/w) are achievable. The challenge during cultivation is the achievement of a combination of high productivity (occurs under optimal nutrient supply) and maximum of lipid content (occurs during growth limitation).
Given the opportunity of individually adjust the composition of algae biomass the full potential of Subitec´s technology can be utilized.
Microalgae can be manipulated to high protein, high carbohydrate or high lipid content as required.