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Table 1 Bacterial growth measured by OD600nm of the digestive liquids after every passage. The data show a mean from three replicates with ± SD. Tukey’s HSD test was applied after ANOVA variance analysis to compare statistical significance; for detailed comparisons, see Additional file 1

From: Dynamics of dark fermentation microbial communities in the light of lactate and butyrate production

Experiment (days)

M (molasses)

ML (molasses + lactate)

MLA (molasses + lactate + acetate)

LA (lactate + acetate)

SLA (sucrose + lactate + acetate)

3

2.8 ± 0.7

3.1 ± 0.3

3.4 ± 0.1

0.8 ± 0.05 b

3.2 ± 0.1

6

3.2 ± 0.4

2.4 ± 0.5 a

3.6 ± 0.1 a

0.9 ± 0.1 b

3.2 ± 0.03

9

3.3 ± 0.4 c

2.3 ± 0.2 a, c, d

3.4 ± 0.3 a

1.4 ± 0.2 b

3.3 ± 0.1 d

12

2.1 ± 0.1

2.3 ± 0.5 a

3.4 ± 0.05 a

1.2 ± 0.3 b

2.7 ± 0.4

15

2.8 ± 0.7

3.3 ± 0.01

3.4 ± 0.1

1.1 ± 0.1 b

3.3 ± 0.1

18

3.3 ± 0.2

3.2 ± 0.1

3.2 ± 0.2

1.3 ± 0.2 b

3.1 ± 0.1

  1. ap < 0.05 (Experiment ML vs Experiment MLA; Tukey’s HSD test)
  2. b0.001 < p < 0.005 (Experiment LA vs any other group; Tukey’s HSD test)
  3. cp < 0.05 (Experiment M vs Experiment ML; Tukey’s HSD test)
  4. dp < 0.05 (Experiment ML vs Experiment SLA; Tukey’s HSD test)