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Table 7 Instantaneous and specific rates of the three sequential sorbitol fermentation batches using P. acidipropionici operating in four independent vessels

From: Microbial production of Propionic and Succinic acid from Sorbitol using Propionibacterium acidipropionici

 

First batch

Second batch

Third batch

rS = −dS/dt (g h−1)

−0.224

−0.272

−0.250

rSA = dP/dt (g h−1)

0.022

0.036

0.053

rAA = dP/dt (g h−1)

0.012

0.008

0.007

rPA = dP/dt (g h−1)

0.137

0.114

0.109

rx = dX/dt (g h−1)

0.082

0.089

0.070

μs = 1/X(−dS/dt) (h−1)

−0.039

−0.044

−0.051

μSA = 1/X(dP/dt) (h−1)

0.004

0.006

0.011

μAA = 1/X(dP/dt) (h−1)

0.002

0.001

0.001

μPA = 1/X(dP/dt) (h−1)

0.024

0.018

0.022

μx = 1/X(dX/dt) (h−1)

0.014

0.014

0.014

  1. S: substrate (sorbitol); SA: succinic acid; AA: acetic acid; PA: propionic acid; X: cells.