Direct ammonium fumarate production by Rhizopus arrhizus under phosphorous limitation |
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| Authors: | E Riscaldati M Moresi F Federici M Petruccioli |
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| Institution: | (1) Italy;(2) Dipartimento di Agrobiologia ed Agrochimica, University of Tuscia, Viterbo, Via San C. De Lellis, 01100 Viterbo, Italy |
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| Abstract: | Direct ammonium fumarate production from glucose-based media with Rhizopus arrhizus NRRL 1526 was obtained using 2-kmol (NH4)2CO3 per-m3 as neutralising agent and controlling mycelial growth by phosphorous (P) limitation. As the P level in the production medium was increased from 0 to 0.3-kg of KH2PO4 per m3, the fumarate yield decreased from 0.32 to 0.13-g per-g of glucose consumed; maximum ammonium fumarate productivity (0.46-kg-m–3-h–1) was obtained when using 0.1-kg phosphate-m–3. |
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| Keywords: | ammonium fumarate phosphorous limitation production Rhizopus arrhizus |
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