RT Journal Article
T1 Obtaining Fermentable Sugars from a Highly Productive Elm Clone Using Different Pretreatments
A1 Ibarra, David
A1 Martín Sampedro, Raquel
A1 Jiménez López, Laura
A1 Díaz Blanco, Manuel Jesús
AB The interest of supplying lignocellulosic materials for producing fermentable sugars hasrecently emerged in order to diminish the negative environmental effects of fossil fuels. In thisstudy, the Ulmus minor clone Ademuz, characterized for its tolerance to Dutch elm disease and itsrapid growth, was evaluated as a source of fermentable sugars. For that, different pretreatments,comprising autohydrolysis, dilute acid hydrolysis, acid catalyzed organosolv, and alkaline extraction,were evaluated at two levels of severity (pretreatment temperatures at 160 ◦C and 180 ◦C, except foralkaline extraction at 80 ◦C and 160 ◦C); and the resulting pretreated materials were enzymaticallyhydrolyzed for fermentable sugars production. The major extraction of lignin and hemicellulose wasachieved during organosolv (48.9%, lignin; 77.9%, hemicellulose) and acid hydrolysis (39.2%, lignin;95.0%, hemicellulose) at 180 ◦C, resulting in the major enzymatic digestibility (67.7%, organosolv;53.5% acid hydrolysis). Contrarily, under the most favorable conditions for autohydrolysis (180 ◦C)and alkaline extraction (160 ◦C), lower extraction of lignin and hemicellulose was produced (4.8%,lignin; 67.2%, hemicellulose, autohydrolysis; 22.6%, lignin; 33.1%, hemicellulose, alkaline extraction),leading to lower enzymatic digestibility (32.1%, autohydrolysis; 39.2%, alkaline extraction). Takinginto account the sugars produced during enzymatic hydrolysis of pretreated materials and thesolubilized sugars from pretreatment liquors, the highest sugars (glucose and xylose) yield production(28.1%) per gram of biomass from U. minor clone Ademuz was achieved with acid catalyzedorganosolv at 180 ◦C.
PB MDPI
SN 1996-1073
YR 2021
FD 2021-04
LK http://hdl.handle.net/10272/19922
UL http://hdl.handle.net/10272/19922
LA eng
NO Ibarra, D., Martín Sampedro, R., Jiménez López, L. ... Díaz Blanco, M. J. (2021). Obtaining Fermentable Sugars from a Highly Productive Elm Clone Using Different Pretreatments. Energies, 14(9), 2415. DOI: https://doi.org/10.3390/en14092415
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026