Continuous fermentation of sweet whey permeate for propionic acid production in a CSTR with UF recycle |
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| Authors: | P Boyaval C Corre |
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| Institution: | (1) Laboratoire de Recherches de Technologie Laitière, Institut National de la Recherche Agronomique, 65, rue de Saint-Brieuc, 35042 Rennes Cedex, (France) |
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| Abstract: | Summary Propionic acid was produced byPropionibacterium acidi-propionici from sweet-whey permeate in a stirred tank reactor (CSTR) with cell recycle by ultrafiltration. The highest volumetric productivity achieved was 14.3 g.l–1. h–1, with a biomass of 100 g.l–1 (dry weight). More concentrated product can be obtained by electrodialysis of the cell free fermentation medium. |
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