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Table 2 Composition of the fermented broth at the end of the 6th fermentative cycle in 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 or molasses at 30 °C

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

Composition (g 100 mL−1) Sugarcane juice Molasses
PE-2 PE-2 + rough PE-2 + Lf PE-2 + rough + Lf PE-2 PE-2 + rough PE-2 + Lf PE-2 + rough + Lf
Sucrose 0 0 0.22 ± 0 0 0 0 0.22 ± 0 0
Glucose (Glu) 1.42 ± 0.36 4.23 ± 0.25 1.76 ± 0.41 2.38 ± 0.07 0.98 ± 0.02 1.66 ± 0.06 1.12 ± 0.03 1.64 ± 0.04
Fructose (Fru) 2.02 ± 0.66 6.11 ± 0.14 2.57 ± 0.77 5.26 ± 0.09 1.56 ± 0.07 3.47 ± 0.06 1.71 ± 0.04 4.47 ± 0.07
Glycerol 0.39 ± 0.02 0.34 ± 0.03 0.40 ± 0.08 0.49 ± 0.02 0.44 ± 0.01 0.45 ± 0.02 0.40 ± 0.04 0.45 ± 0.05
Acetate 0 0.14 ± 0 0.06 ± 0.09 0.20 ± 0 0.21 ± 0 0.26 ± 0.01 0.19 ± 0 0.22 ± 0
Ratio Fru/Glu 1.43 1.44 1.46 2.22 1.59 2.09 1.52 2.73
  1. The analysis was carried out by HPLC
  2. Initial total reducing sugar concentration (in g 100 mL−1); 17 (sugarcane juice) and 14 (molasses)
  3. Results are the mean ± standard deviation of two replicates