An up-scaled biotechnological approach for phosphorus-depleted rye bran as animal feed.

Autor: Widderich N; Institute of Technical Biocatalysis, Hamburg University of Technology, Hamburg, Germany., Stotz J; Institute of Biotechnology, RWTH Aachen University, Aachen, Germany., Lohkamp F; Institute for Animal Nutrition, University of Veterinary Medicine Hanover, Foundation, Hanover, Germany., Visscher C; Institute for Animal Nutrition, University of Veterinary Medicine Hanover, Foundation, Hanover, Germany., Schwaneberg U; Institute of Biotechnology, RWTH Aachen University, Aachen, Germany., Liese A; Institute of Technical Biocatalysis, Hamburg University of Technology, Hamburg, Germany., Bubenheim P; Institute of Technical Biocatalysis, Hamburg University of Technology, Hamburg, Germany. paul.bubenheim@tuhh.de., Ruff AJ; Institute of Biotechnology, RWTH Aachen University, Aachen, Germany. aj.ruff@biotec.rwth-aachen.de.
Jazyk: angličtina
Zdroj: Bioresources and bioprocessing [Bioresour Bioprocess] 2024 May 13; Vol. 11 (1), pp. 49. Date of Electronic Publication: 2024 May 13.
DOI: 10.1186/s40643-024-00765-5
Abstrakt: Side streams from the milling industry offer excellent nutritional properties for animal feed; yet their use is constrained by the elevated phosphorus (P) content, mainly in the form of phytate. Biotechnological P recovery fosters sustainable P management, transforming these streams into P-depleted animal feed through enzymatic hydrolysis. The enzymatic P mobilization not only enables P recovery from milling by-products but also supports the valorization of these streams into P-depleted animal feeds. Our study presents the scalability and applicability of the process and characterizes the resulting P-depleted rye bran as animal feed component. Batch mode investigations were conducted to mobilize P from 100 g to 37.1 kg of rye bran using bioreactors up to 400 L. P reductions of 89% to 92% (reducing from 12.7 g P /kg to 1.41-1.28 g P /kg) were achieved. In addition, High Performance Ion Chromatography (HPIC) analysis showed complete depletion of phytate. The successful recovery of the enzymatically mobilized P from the process wastewater by precipitation as struvite and calcium hydrogen phosphate is presented as well, achieving up to 99% removal efficiency. Our study demonstrates a versatile process that is easily adaptable, allowing for a seamless implementation on a larger scale.
(© 2024. The Author(s).)
Databáze: MEDLINE
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