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Table 4 Comparison of malic acid production with A. oryzae and different CaCO3 concentrations after 192 h

From: Acetate as substrate for l-malic acid production with Aspergillus oryzae DSM 1863

c (CaCO3) (g/L) Consumed substrate (g/L) c (malic acid) (g/L) YP/S (g/g) YP/S, carbon (g/g) Overall productivity (g/(L*h)) Maximum productivity (g/(L*h)) Time of maximum productivity (h)
0 3.95 ± 2.15 0.88 ± 0.22 0.28 0.25 0.005 0.010 41.32
10 27.07 ± 1.95 6.60 ± 0.48 0.24 0.22 0.034 0.052 95.14
30 33.01 ± 5.07 7.22 ± 1.08 0.22 0.20 0.038 0.067 102.82
50 37.57 ± 5.46 7.54 ± 0.78 0.20 0.18 0.037 0.075 96.58
70 40.82 ± 4.19 8.21 ± 0.44 0.20 0.18 0.043 0.109 87.93
90 46.40 ± 0.15 8.77 ± 0.23 0.19 0.17 0.046 0.121 84.80
  1. YP/S (g/g)  substrate specific malic acid yield calculated as g(malic acid)/g(consumed acetic acid), YP/S, carbon (g/g)  substrate specific malic acid yield calculated as g(produced C from malic acid)/g(consumed C from acetic acid)