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Título

Fungal pretreatment: An alternative in second-generation ethanol from wheat straw

AutorSalvachúa, Davinia; Prieto Orzanco, Alicia CSIC ORCID ; López-Abelairas, María; Lu-Chau, Thelmo; Martínez, Ángel T. CSIC ORCID ; Martínez, María Jesús CSIC ORCID
Palabras claveWheat straw
Pretreatment
Basidiomycetes
Enzymatic hydrolysis
Bioethanol
Fecha de publicaciónago-2011
EditorElsevier
CitaciónBioresource Technology 102(16): 7500-7506(2011)
ResumenThe potential of a fungal pretreatment combined with a mild alkali treatment to replace or complement current physico-chemical methods for ethanol production from wheat straw has been investigated. Changes in substrate composition, secretion of ligninolytic enzymes, enzymatic hydrolysis efficiency and ethanol yield after 7, 14 and 21 days of solid-state fermentation were evaluated. Most fungi degraded lignin with variable selectivity degrees, although only eight of them improved sugar recovery compared to untreated samples. Glucose yield after 21 days of pretreatment with Poria subvermispora and Irpex lacteus reached 69% and 66% of cellulose available in the wheat straw, respectively, with an ethanol yield of 62% in both cases. Conversions from glucose to ethanol reached around 90%, showing that no inhibitors were generated during this pretreatment. No close correlations were found between ligninolytic enzymes production and sugar yields
Descripción7 páginas, 3 figuras, 2 tablas -- PAGS nros. 7500-7506
Versión del editorhttp://dx.doi.org/10.1016/j.biortech.2011.05.027
URIhttp://hdl.handle.net/10261/51953
DOI10.1016/j.biortech.2011.05.027
ISSN0960-8524
E-ISSN1873-2976
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