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Table 1 Comparison of l-lactic acid fermentation characteristics based on simulated substrate and alkali-treated corn stalk (ATCS) hydrolysates

From: Co-generation of ethanol and l-lactic acid from corn stalk under a hybrid process

Culture Initial ethanol concentration (g L−1) Aeration time (h) Cell density (OD620) l-Lactic acid titer (g L−1) l-Lactic acid yield (g g−1) l-Lactic acid productivity (g L−1 h−1)
Simulated substrate 30.00 5.00 8.20 21.50 0.79 2.05
40.00 5.33 8.00 22.10 0.81 2.01
50.00 6.00 8.80 21.00 0.77 2.33
60.00 7.00 6.90 22.80 0.84 1.63
ATCS hydrolysates 50.50 8.00 8.80 21.50 0.76 2.08
50.30 6.50 6.90 24.25 0.86 1.96