Apparent viscosity (cP) Pump setting Circulation time (s) Mixing time (s)
1 99 15 72
10 99 15 77
15 99 15 61
22 99 15 67
40 99 15 69
40 75 17 72
40 50 30 100
40 25 59 120
Table 1: Characteristic times (tc, tm, s) of the loop bioreactor presented in the work of Papagianni et al. [21] in the citric acid fermentation process by A. niger.