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Fig. 3 | Biotechnology for Biofuels

Fig. 3

From: Efficient molasses fermentation under high salinity by inocula of marine and terrestrial origin

Fig. 3

Final volatile fatty acids (VFAs) accumulation during the enrichment of terrestrial (T) and marine (M) cultures using molasses. Final values refer VFAs concentration at the last day of incubation (day 7). Cultures were tested in batch and had different initial pH values (pHi) (either 6 or 7) and organic loading rates (OLR) (either 1 or 5 gCOD L−1 d−1, equivalent to an initial content of 7 or 35 gCOD L−1, respectively). Cultures were tested for 7 days, after which 10% liquid volume was withdrawn and incubated again with fresh medium for another 7 days. Hence, the enrichment consisted of 3 consecutive batches of 1 week each (Week 1, a; Week 2, b; Week 3, c). Marine cultures were provided with 23 g L−1 NaCl to maintain their original salinity at all conditions. Error bars represent standard deviations of 3 independent biological replicates. Keys reported in the graph

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