Phosphate (Pi) must be recycled due to the limited nature of fossil Pi rock. Inorganic polyphosphate (polyP) analytics were established in this Ph.D. thesis. The biotechnological production of the novel products polyP-rich yeast extract and pure water-soluble food-grade bio-polyP with Saccharomyces cerevisiae from Pi was developed. Together with project partners, Pi was, for the first time, upcycled from the Pi waste stream canola (Brassica napus) meal into these new food-additives.weiterlesen