Publicación: Sucrose-to-ethanol microalgae-based platform using seawater

Publicación: Sucrose-to-ethanol microalgae-based platform using seawater

Nuevo artículo de investigación: «Sucrose-to-ethanol microalgae-based platform using seawater» de los autores:
*M. Eugenia Sanz Smachetti, *Camila D. Coronel, Graciela Salerno & Leonardo Curatti

Highlights

• Bioprospecting for native sucrose-accumulating microalgal strains

• Induction of sucrose and lipid accumulation using seawater

• Mild sugar-extraction conditions and direct conversion into ethanol

• Modeled productivity of 4200 L ethanol·ha−1·year−1 in raceway ponds in Brazil

Abstract

Microalgal biomass is increasingly considered a promising feedstock for the production of bioethanol because it has simpler biochemical composition and structural features than plant feedstocks. However, it still requires hazardous and/or expensive acid or enzymatic saccharification processes before its conversion into ethanol by fermentation. To bypass this limitation, we identified microalgal strains that accumulate up to 10% (w/w) of sucrose, a readily fermentable sugar. Conditions were optimized to produce sucrose in half-strength seawater, as well as efficient extraction by very mild procedures, and conversion into ethanol. We present a model based on cultivation in environmental photobioreactors that predicted a productivity of 4200 L ethanol·ha−1·year−1 in raceway ponds in Brazil, approaching the average sucrose and ethanol productivity from sugarcane.

*These authors contributed equally

Effect of matching microalgal strains origin and regional weather condition on biomass productivity in environmental photobioreactors

Effect of matching microalgal strains origin and regional weather condition on biomass productivity in environmental photobioreactors

Laboratorio de Biomasa y Biorrefinería Effect of matching microalgal strains origin and regional weather condition on biomass productivity in environmental photobioreactors Camila D. Coronel  Mauro Do Nascimento Leonardo Curatti   Highlights • Twenty-six microalgal strains were isolated from a high irradiance geographical site.