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Fig. 6 | Biotechnology for Biofuels

Fig. 6

From: Succinic acid production on xylose-enriched biorefinery streams by Actinobacillus succinogenes in batch fermentation

Fig. 6

Succinate yields (g succinate/g sugars) and maximum productivities (g/L-h) from all of the batch fermentations conducted in this work. Maximum specific productivities are calculated from the time interval that exhibits the highest slope in the succinate titer profiles. Those time intervals were specifically (1) for all glucose runs and concentrations from 12 to 19 h, (2) for 40 g/L xylose from 7 to 23 h, for 60–80 g/L xylose from 16 to 22 h, and for 100 g/L from 23 to 30 h, (3) for “mock DAP-H,” “mock DDAP-H,” and “mock sugars + AA” from 12 to 23 h and for “mock sugars” from 9 to 23 h, and lastly (4) for DAP-H from 72 to 102 h and for DDAP-H from 47 to 54 h. Yields were based on mass calculations that incorporate Na2CO3 dilution and sampling volumes removed from the fermentor. Standard deviations for yields were less than 5 % (excluding the treatment with glucose 80 g/L where it was 16 %). Standard deviations for productivities were less than 10 % (excluding in mock DAP-H which was 29 %)

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