title: Ethanol production from pretreated olive tree wood and sunflower stalks by an SSF process.
abstract: Olive tree wood and sunflower stalks are agricultural residues largely available at low cost in Mediterranean countries. As renewable lignocellulosic materials, their bioconversion may allow both obtaining a value-added product, for fuel ethanol, and facilitating their elimination. In this work, the ethanol production from olive tree wood and sunflower stalks by a simultaneous saccharification and fermentation (SSF) process is studied. As a pretreatment, steam explosion at different temperatures was applied. The water insoluble fractions of steam-pretreated sunflower stalks and steamed, delignified olive tree wood were used as substrates at 10% w/v concentration for an SSF process by a cellulolytic commercial complex and Saccharomyces cerevisiae. After 72-h fermentation, ethanol concentrations up to 30 g/L were obtained in delignified steam-pretreated olive tree wood at 230 degrees C and 5 min. Sunflower stalks pretretated at 220 degrees C and 5 min gave maximum ethanol concentrations of 21 g/L in SSF experiments.
authors.affiliation: Department of Chemical, Environmental and Materials Engineering, University of Jaén, Campus Las Lagunillas, 23071 Jaén, Spain.
authors.forename: Encarnación
authors.initials: E
authors.lastname: Ruiz
authors.forename: Cristóbal
authors.initials: C
authors.lastname: Cara
authors.forename: Mercedes
authors.initials: M
authors.lastname: Ballesteros
authors.forename: Paloma
authors.initials: P
authors.lastname: Manzanares
authors.forename: Ignacio
authors.initials: I
authors.lastname: Ballesteros
authors.forename: Eulogio
authors.initials: E
authors.lastname: Castro
mesh_terms: D018929:Cell Culture Techniques / Q000379:methods; D002480:Cellulase / Q000737:chemistry; D003198:Computer Simulation; D000431:Ethanol / Q000302:isolation & purification / Q000378:metabolism*; D005240:Feasibility Studies; D008954:Models, Biological; D008956:Models, Chemical; D031658:Olea / Q000737:chemistry* / Q000382:microbiology*; D035261:Plant Components, Aerial / Q000737:chemistry* / Q000382:microbiology*; D013227:Steam; D014934:Wood
chemical_list: D013227:Steam; D000431:Ethanol; D002480:Cellulase