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Fig. 2 | Biotechnology for Biofuels

Fig. 2

From: Enhanced direct fermentation of cassava to butanol by Clostridium species strain BOH3 in cofactor-mediated medium

Fig. 2

Role of calcium and carbonate ions on butanol production by strain BOH3 in defined medium amended with cassava. Blank stands for absence of CaCO3, CaCl2 stands for 10 mM CaCl2, Na2CO3 stands for 10 mM Na2CO3, CaCl2 + Na2CO3 stands for 10 mM CaCl2 and 10 mM Na2CO3, CaCO3 stands for 10 mM CaCO3. The fermentation was performed at 37 °C for 96 h. Initial cassava flour concentration is 100 g/L containing 68 g/L of starch. Data represent the mean ± SD of triplicate individual experiments

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