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Biobutanol production from coffee silverskin
María Hijosa-Valsero1, Jerson Garita-Cambronero2, Ana I Paniagua-García2,3
1Centro de Biocombustibles y Bioproductos, Instituto Tecnológico Agrario de Castilla y León (ITACyL), Villarejo de Órbigo, 24358, León, Spain. mhijv@unileon.es.
Microbial Cell Factories
|September 29, 2018
Summary
Coffee silverskin, a coffee industry byproduct, can be used to produce biobutanol via fermentation. Clostridium beijerinckii CECT 508 demonstrated efficient butanol production from this sustainable feedstock.
Area of Science:
- Biotechnology
- Renewable Energy
- Industrial Microbiology
Background:
- Coffee silverskin, a lignocellulosic by-product, is abundant in carbohydrates and lignin.
- Valorization of agro-industrial wastes is crucial for sustainable bio-based economies.
Purpose of the Study:
- To evaluate coffee silverskin as a feedstock for biobutanol production.
- To optimize fermentation conditions for enhanced butanol yield.
Main Methods:
- Autohydrolysis and enzymatic hydrolysis to release sugars from coffee silverskin.
- Acetone-butanol-ethanol fermentation using four Clostridium strains.
- Response surface methodology for optimizing fermentation parameters.
Main Results:
- Hydrolysate contained 34.39 g/L total sugars with 34% recovery.
- Clostridium beijerinckii CECT 508 achieved the highest butanol production (7.02 g/L).
- Optimal conditions yielded a butanol concentration of 7.02 g/L and a yield of 0.269 g/g.
Conclusions:
- Coffee silverskin is a viable feedstock for biobutanol production in biorefineries.
- Strain selection and fermentation optimization are key for efficient lignocellulosic biomass conversion.
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