Producción de bioetanol a partir de biomasa de agave lechuguilla pretratada por autohidrólisis

Translated title of the contribution: Bioethanol production from agave lechuguilla biomass pretreated by autohydrolysis

O. H. Ortíz-Méndez, T. K. Morales-Martínez, L. J. Rios-González, J. A. Rodríguez-de la Garza, J. Quintero, G. Aroca

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Agave lechuguilla cogollos (heart or pulpy central stem with attached leaf bases) were used as feedstock for production of second generation bioethanol following a scheme based on pretreatment by autohydrolysis, enzymatic saccharification and fermentation of hydrolysates. Autohydrolysis was carried out in a Parr reactor at different severity factors with a solid/liquid ratio of 1/6 (w/v) and 200 rpm. Solid fraction obtained was hydrolyzed using the commercial cellulase Accellerase 1500 (Genencor®). Hydrolysate was fermented with the Saccharomyces cerevisiae ATCC 4126 yeast. Using a severity factor of 4.127 (190 °C during 30 min) it was possible to preserve most of the glucans while increasing its enzymatic digestibility. Enzymatic hydrolysis of the solid fraction showed a maximum yield of 60.85%, with a final glucose concentration of 59 g/L. Ethanol concentration at the end of the fermentation was 25.4 g/L (91% of the theoretical ethanol yield).

Translated title of the contributionBioethanol production from agave lechuguilla biomass pretreated by autohydrolysis
Original languageSpanish
Pages (from-to)467-476
Number of pages10
JournalRevista Mexicana de Ingeniera Quimica
Volume16
Issue number2
StatePublished - Aug 2017
Externally publishedYes

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