Boost Fund: Optimizing the Phosphorus cycle in the Sugar beet production process by phytase supplement

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Depleting phosphorus resources are demanding new strategies for an efficient use of this essential nutrient. Therefore, especially phosphorus cycles in agriculture have to be closed. In sugar production this could be achieved in existing production processes by supplementing thermally resistant phytases. Within the project PhytaPhoS these phytases which are thermally resistant at Tm 80-90°C will be developed. They will be supplemented within the sugar extraction process to leach the phytate phosphate form sugar beet slices. Residual enzymes will be inactivated within the following drying process where slices are treated at Temperatures above 135°C. With this procedure the phosphorus concentration in sugar beet slices and the export of phosphorous to areas with high animal density and phosphorus excess in fields will be reduced. Instead, isolated phosphorus will be transferred into spent lime and subsequently back to the sugar beet fields. The BioSC collaboration project PhytaPhoS will assess and evaluate the potential of phosphorus recovery employing phytase, its feasibility and economic approaches from lab scale to field application.

The scientific activities of the Bioeconomy Science Center were financially supported by the Ministry of Innovation, Science and Resesarch within the framework of the NRW Strategieprojekt BioSC - No. 313/323‐400‐002 13.