Autotrophic (C₁-Gas) Versus Heterotrophic (Fructose) Accumulation of Acetic Acid and Ethanol in Clostridium Aceticum
Use este enlace para citar
http://hdl.handle.net/2183/28486
A non ser que se indique outra cousa, a licenza do ítem descríbese como Atribución-NoComercial-SinDerivadas 4.0 Iinternacional
Coleccións
- GI-BIOENGIN- Artigos [106]
Metadatos
Mostrar o rexistro completo do ítemTítulo
Autotrophic (C₁-Gas) Versus Heterotrophic (Fructose) Accumulation of Acetic Acid and Ethanol in Clostridium AceticumData
2021-07-03Cita bibliográfica
Arslan, K., Veiga, M.C., Kennes, C., 2021. Autotrophic (C₁-Gas) versus heterotrophic (fructose) accumulation of acetic acid and ethanol in Clostridium aceticum. Bioresour. Technol. 337, 125485. doi:10.1016/j.biortech.2021.125485
Resumo
[Abstract] The influence of the carbon source on the metabolism and growth of Clostridium aceticum was investigated, supplying either CO or fructose as sole carbon source. The acid and solvent production patterns were determined under either autotrophic or heterotrophic conditions, elucidating the effect of pH on the substrate's bioconversion pattern. The highest maximum specific growth rate was observed with CO, under the organism's optimal growth conditions, reaching 0.052 h⁻¹ and an acetic acid concentration of 18 g·L⁻¹. The production of 4.4 g·L⁻¹ ethanol was also possible, after medium acidification, during CO bioconversion. Conversely, formic acid inhibition was observed during fructose fermentation under optimal growth conditions. In the latter experiments, it was not possible to stimulate solvent production when growing C. aceticum on fructose, despite applying the same medium acidification strategy as with CO, showing the selective effect of the carbon source (autotrophic vs heterotrophic) on the metabolic pattern and solventogenesis.
Palabras chave
Carbon monoxide
Carbon dioxide
Solventogenesis
Syngas
Wood-Ljungdahl pathway
Carbon dioxide
Solventogenesis
Syngas
Wood-Ljungdahl pathway
Descrición
Financiado para publicación en acceso aberto: Universidade da Coruña/CISUG
Versión do editor
Dereitos
Atribución-NoComercial-SinDerivadas 4.0 Iinternacional
ISSN
0960-8524