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[Acetobutylic fermentation: strains and regional raw materials]
F O Benassi1, R K Bloos, L A de Rambaldo
1Cátedra de Microbiología Industrial, Facultad de Ciencias Exactas, Químicas y Naturales, Universidad Nacional de Misiones, Argentina.
Revista Argentina De Microbiologia
|January 1, 1983
Summary
Researchers isolated Clostridium acetobutilicum strains for N-butanol production using cassava. Maize flour blends yielded higher solvent production than soy, demonstrating potential for cost-effective biofuel generation.
Area of Science:
- Microbiology
- Biotechnology
- Industrial Microbiology
Context:
- Anaerobic microorganisms, specifically Clostridium acetobutilicum, are crucial for solvent production.
- Cassava is an abundant and low-cost raw material, particularly in Misiones Province.
- Optimizing fermentation substrates is key to enhancing biofuel yields.
Purpose:
- To characterize indigenous Clostridium acetobutilicum strains for solvent production, focusing on N-butanol.
- To evaluate cassava as a substrate for acetone-butanol fermentation.
- To determine the optimal blend of cassava with maize or soy flour for maximizing solvent yield.
Summary:
- Indigenous Clostridium acetobutilicum strains were isolated and characterized for their solvent-producing capabilities, with N-butanol as a key product.
- Cassava was investigated as a fermentation substrate, with mashes comprising cassava flour mixed with maize or soy flour.
- Fermentation trials indicated that mashes containing integral maize flour resulted in the highest solvent yields (26.20 g/dry solids), surpassing those with soy flour, suggesting superior nutrient utilization.
Impact:
- This research demonstrates the feasibility of utilizing local cassava resources for the biotechnological production of solvents.
- The findings provide valuable insights into optimizing fermentation conditions and substrate composition for enhanced biofuel production.
- Successful characterization and substrate optimization pave the way for developing sustainable and cost-effective acetone-butanol fermentation processes.