Ethanol production from fresh cassava using the process strategy (simultaneous hydrolysis anf fermentation) using viscosity reducing enzymes

Authors

  • Hader Iván Castaño-Peláez Politécnico Colombiano Jaime Isaza Cadavid

DOI:

https://doi.org/10.33571/rpolitec.v16n31a2

Keywords:

Ethanol, Fresh cassava tuber, simultaneous enzymatic hydrolysis and fermentation (SSF), viscosity reduction

Abstract

The production of ethanol from fresh cassava was evaluated by the use of viscosity reducing enzymes and starch hydrolyzing enzymes in granular form using the strategy of simultaneously integrating hydrolysis and fermentation. Cassava tubers were used; the effect of pH, enzyme load and shell on viscosity was evaluated; In addition, the pre-liquefaction of starch granules and the effect of loading of the stargen® 01 complex and the inoculum on ethanol production were evaluated. The optimization and validation of the process was carried out. The pH, enzymatic activity and the shell had an effect on viscosity; In the HEFS system the inoculum and the enzymatic load had an effect on ethanol production. It was possible to produce ethanol by using degrading enzymes of the cell wall to reduce viscosity and by using hydrolytic enzymes of starch granules.

Se evaluó la producción de etanol a partir de yuca fresca mediante el uso de enzimas reductoras de viscosidad y enzimas hidrolizantes de almidón en forma granular utilizando la estrategia de proceso de integración en forma simultánea de la hidrólisis y la fermentación. Se utilizaron tubérculos de yuca fresca; se evaluó el efecto del pH, carga enzimática y la cáscara sobre la viscosidad; se evaluó además el prelicuado de los gránulos de almidón y el efecto de la carga del complejo Stargen® 01 y el inoculo sobre la producción de etanol. Se realizó la optimización y validación del proceso. El pH, actividad enzimática y la presencia de cascara presentaron efecto sobre la viscosidad; en el sistema HEFS  el inóculo y la carga enzimática tuvieron efecto sobre la producción de etanol. Fue posible la producción de etanol mediante el uso de las enzimas degradantes de la pared celular para disminuirla viscosidad y mediante el uso de enzimas hidrolíticas de los gránulos de almidón.

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Author Biography

Hader Iván Castaño-Peláez, Politécnico Colombiano Jaime Isaza Cadavid

Docente

Facultad de Ciencias Basicas, Sociales y Humanas

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Published

2020-05-30

How to Cite

Castaño-Peláez, H. I. (2020). Ethanol production from fresh cassava using the process strategy (simultaneous hydrolysis anf fermentation) using viscosity reducing enzymes. Revista Politécnica, 16(31), 19–28. https://doi.org/10.33571/rpolitec.v16n31a2