was measured in the medium in the absence of the microorganism [14,16,19]. The variations in KLa and oxygen uptake rates
throughout the bioprocesses are given in Table 2. KLa profiles of
MOT-pHUC and MOT-pHC are alike. The highest KLa value was
obtained at the t= 2 h of pHC condition as 0.017 s−1 . For pHUC, the
highest KLa was obtained at t= 2 h of the bioprocess as 0.016 s−1 . The
OUR increased during the exponential growth phase of the microorganism, took the maximum value at the cell concentration of 0.62
and 0.58 g dm−3 of MOT-pHUC and MOT-pHC, respectively; thereafter, decreased slowly as the cells reached the stationary phase of
the growth. The highest OUR values were determined as 0.0020 and
0.0022 mmol dm−3 s−1 at pHUC and pHC, respectively.