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Table 4 Fermentation performance of batch and repeated-batch cultures

From: Fungal fermentation on anaerobic digestate for lipid-based biofuel production

Culture Batch (control) Repeated-batch
Initial batch After 1st repeated-batch After 2nd repeated-batch
C/N ratio of the medium (mol/mol) 3.07 ± 0.04 2.16 ± 0.06 2.16 ± 0.06 2.16 ± 0.06
Glucose consumed (g/L) 12.51 ± 0.17 8.77 ± 0.26 17.31 ± 0.50 26.23 ± 0.45
Xylose consumed (g/L) 6.47 ± 0.08 4.14 ± 1.17 9.06 ± 0.34 12.77 ± 0.50
Acetate consumed (g/L) 2.51 ± 0.04 2.15 ± 0.11 4.42 ± 0.12 6.83 ± 0.08
Biomass concentration (g/L) 8.98 ± 0.04 6.74 ± 0.39 11.11 ± 0.54 14.34 ± 0.99
Lipid concentration (g/L) 1.50 ± 0.06 1.25 ± 0.06 2.17 ± 0.06 3.16 ± 0.08
Lipid content in biomass (g/g) 0.17 ± 0.01 0.17 ± 0.01 0.20 ± 0.01 0.21 ± 0.00
Lipid yield (g/g)a 0.07 ± 0.00 0.08 ± 0.00 0.07 ± 0.00 0.07 ± 0.00
Biomass yield (g/g)b 0.42 ± 0.01 0.45 ± 0.04 0.36 ± 0.02 0.31 ± 0.01
  1. Data are the average of three replicates with standard deviation
  2. aLipid yield is with respect to the total amount of substrates in the medium
  3. bBiomass yield is with respect to the total amount of substrates in the medium