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Table 1 Ethanol yield (%) and ethanol productivity (g L−1 h−1) of the fermentations carried out with the industrial S. cerevisiae yeast (PE-2) contaminated with the rough strain of S. cerevisiae (rough) and/or L. fermentum (Lf), in sugarcane juice (SCJ) or molasses (MOL) at 30 °C, in single and multiple-batch fermentations

From: Effects of feedstock and co-culture of Lactobacillus fermentum and wild Saccharomyces cerevisiae strain during fuel ethanol fermentation by the industrial yeast strain PE-2

Fermentation Ethanol yield/productivity Feedstock Fermentation trials
PE-2 PE-2 + rough PE-2 + Lf PE-2 + rough + Lf
Single-batch fermentationa Yield (%) SCJ 77.18 ± 11.18 49.86 ± 17.02 50.05 ± 11.75 51.26 ± 9.45
MOL 51.22 ± 8.47 55.03 ± 4.74 42.95 ± 9.77 55.83 ± 9.92
Productivity (g L−1 h−1) SCJ 1.71 ± 0.60 1.30 ± 0.22 1.17 ± 0.24 1.38 ± 0.33
MOL 1.13 ± 0.28 1.12 ± 0.21 1.05 ± 0.30 1.26 ± 0.26
Multiple-batch fermentationb Yield (%) SCJ 87.78 ± 6.82 69.95 ± 22.79 67.67 ± 13.16 82.92 ± 9.57
MOL 83.30 ± 15.82 67.17 ± 18.94 80.85 ± 11.53 80.98 ± 3.93
Productivity (g L−1 h−1) SCJ 3.22 ± 1.23 2.57 ± 0.78 2.62 ± 1.02 3.18 ± 1.19
MOL 3.28 ± 1.09 3.03 ± 1.02 3.03 ± 0.97 2.83 ± 0.98
  1. Results are the mean ± standard deviation of eighta or twelveb replicates