Publikation: Batch and continuous production of propionic acid from whey permeate by Propionibacterium acidi-propionici in a three-electrode amperometric culture system
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Growth of Propionibacterium acidi-propionici was studied on lactose as substrate and in acid whey permeate in a three-electrode poised-potential system with cobalt sepulchrate as artificial electron donor. In batch culture experiments in a stirred-tank reactor the substrate was fermented completely to propionic acid up to 6.5 g 1 1 lactose in a supplemented whey permeate medium. No acetic acid was produced during the growth of P. acidi-propionici. An electron flow of 80 100 mA was obtained and the electron balance was 101%. In continuously growing cultures with 3 g 1 1 of lactose as the substrate, propionate was formed as the only fermentation product up to a dilution rate (D) of 0.04 h 1. With D>0.04 h 1 the bacteria immobilized on the working electrode surface. It was examined whether an electron transfer occurred between the platinum working electrode and the immobilized cells.
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SCHUPPERT, Beate, Bernhard SCHINK, Walter TRÖSCH, 1992. Batch and continuous production of propionic acid from whey permeate by Propionibacterium acidi-propionici in a three-electrode amperometric culture system. In: Applied Microbiology and Biotechnology. 1992, 37(5), pp. 549-553. ISSN 0175-7598. eISSN 1432-0614. Available under: doi: 10.1007/BF00240723BibTex
@article{Schuppert1992Batch-7969, year={1992}, doi={10.1007/BF00240723}, title={Batch and continuous production of propionic acid from whey permeate by Propionibacterium acidi-propionici in a three-electrode amperometric culture system}, number={5}, volume={37}, issn={0175-7598}, journal={Applied Microbiology and Biotechnology}, pages={549--553}, author={Schuppert, Beate and Schink, Bernhard and Trösch, Walter} }
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