Direct ammonium fumarate production by Rhizopus arrhizus under phosphorous limitation.

Riscaldati, E.; Moresi, M.; Federici, F.; Petruccioli, M.

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.

SUCCINATE dehydrogenase; PHOSPHORUS; GLUCOSE; DISACCHARIDES; FRUCTOSE; AMMONIUM compounds

Biotechnology Letters, 2000, Vol 22, Issue 13, p1043

0141-5492

Academic Journal

10.1023/A:1005621311898