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Table 2 Relative enzymatic activities of PDH, ICDH, and CcO after substrate(s) feeding (26 h) in different batches

From: Improving the stability of glutamate fermentation by Corynebacterium glutamicum via supplementing sorbitol or glycerol

Key enzyme Fermentation batches
Batch #1 Batch #2 Batch #3 Batch #4 Batch #5 Batch #6
PDH 0.84 ± 0.057 0.58 ± 0.043 0.72 ± 0.052 0.72 ± 0.036 0.76 ± 0.078 0.72 ± 0.061
ICDH 1.18 ± 0.051 0.72 ± 0.039 0.97 ± 0.061 0.92 ± 0.032 1.24 ± 0.076 1.27 ± 0.092
CcO 0.50 ± 0.063 0.00 1.50 ± 0.089 0.79 ± 0.043 0.75 ± 0.057 0.25 ± 0.04
  1. Batch #1, normal batch (control); batch #2, abnormal batch without sorbitol or glycerol; batch #3, sorbitol co-fed with glucose; batch #4, 15 g/L sorbitol added in the initial medium; batch #5, glycerol co-fed with glucose; batch #6, 10 g/L glycerol added in the initial medium.