Abstract
Objective
To determine Monod kinetics parameters (µmax, Ks, kd and YX/S) of the mesophilic H2 producer Clostridium termitidis grown on glucose and cellobiose by modeling in MATLAB.
Results
Maximum specific growth rates (µmax) were 0.22 and 0.24 h−1 for glucose and cellobiose respectively; saturation constants (Ks) were 0.17 and 0.38 g l−1 respectively and the biomass yields (YX/S) were 0.26 and 0.257 g dry wt g−1 substrate. H2 yields of 1.99 and 1.11 mol H2 mol−1 hexose equivalent were also determined for glucose and cellobiose respectively.
Conclusion
The microbial kinetics of this model microorganism will enhance engineering biofuel production applications.
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Acknowledgments
This work was supported by the Eastern platform of the Biofuel Network. The authors acknowledge the support by Consejo Nacional de Ciencia y Tecnologia de Mexico (CONACYT) and Alianza para la Formacion e Investigacion en Infraestructura para el Desarrollo de Mexico, awarded to Maritza Gomez-Flores.
Supporting information
Supplementary Figure 1—Correlation between dry wt and cellular protein content in Clostridium termitidis.
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Gomez-Flores, M., Nakhla, G. & Hafez, H. Microbial kinetics of Clostridium termitidis on cellobiose and glucose for biohydrogen production. Biotechnol Lett 37, 1965–1971 (2015). https://doi.org/10.1007/s10529-015-1891-4
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DOI: https://doi.org/10.1007/s10529-015-1891-4