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Bioresources and Bioprocessing
Fig. 3 | Bioresources and Bioprocessing

Fig. 3

From: Effect of temperature and surfactant on biomass growth and higher-alcohol production during syngas fermentation by Clostridium carboxidivorans P7

Fig. 3

Growth, production, carbon monoxide consumption and carbon fraction by C. carboxidivorans P7 using different culture strategies. Mean values and standard errors of three replicates are shown in all graphs. Optical densities at 600 nm (OD600s) in the culture of 37 °C and 37–25 °C, a without any surfactant, b with Tween 80 and c with saponin; and a, b the approximate time when bacterial agglomerates appeared (the BA time) in the culture of 37 °C. d Consumed carbon monoxide ratios during 0–120 h. e Product-carbon concentrations (mmol/l) from ethanol, butanol, hexanol, acetate, butyrate and caproate at 120 h. f Carbon fraction at 120 h, mainly consisting of biomass, alcohol, acid, carbon dioxide and not detected unknown

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