Recent progress in algal biotechnology has identified new products based on their broad evolutionary origin. Novel metabolites were found for pharmacy, food industry, medicine e.g. tumor suppression and antibiotics. However, sustainable and economical algal production for crude oil replacement is limited by extremely low space time yields in photobioreactors. The consequences are a high energy burden for mass flow dependent processes and the need of space being in conflict with sustainable landscape management. New concepts using algae not as biomass producers but as living catalysts may open new options.
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