Itaconic acid production from xylose in repeated-batch and continuous bioreactors
1990
Kautola, H.
Itaconic acid production from xylose by immobilized Aspergillus terreus TKK 200-5-2 mycelia was optimized both in repeated shake-flask fermentations and in continuous column bioreactors using statistical experimental design and empirical modelling. Using continuous 9-1 scale air-lift bioreactors, a pH of 2.5, aeration rate of 0.6 v/v per minute and residence time of 160 h gave the highest itaconic acid concentration. In air-lift bioreactors a cubic carrier size of 0.5 cm gave a 3.3-fold higher product concentration than 1-cm cubes. Packed-bed column reactors had a higher production rate than air-lift reactors.
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