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OPTIMIZATION OF INTEGRATED ALKALINE-EXTRUSION PRETREATMENT OF BARLEY STRAW FOR SUGAR PRODUCTION BY ENZYMATIC HYDROLYSIS

Identificadores del recurso

1359-5113

http://hdl.handle.net/11034/72

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(emi+d archivo)

Ficha

Título:: OPTIMIZATION OF INTEGRATED ALKALINE-EXTRUSION PRETREATMENT OF BARLEY STRAW FOR SUGAR PRODUCTION BY ENZYMATIC HYDROLYSIS
Tema:: Ciencias de la vida
Descrición:: In this work, an integrated one-step alkaline-extrusion process was tested as pretreatment for sugar production from barley straw (BS) biomass. The influence of extrusion 10 temperature (T) and the ratio NaOH/BS dry matter (w/w) into the extruder on pretreatment effectiveness was investigated in a twin-screw extruder at bench scale . A 23 factorial response surface design of experiments was used to analyze the effect of process conditions [T: 50- 100ºC; NaOH/BS ratio: 2.5-7.5% (w/w)] on composition and enzymatic digestibility of pretreated substrate. The optimization of these process variables for a maximum glucan to 15 glucose conversion was determined to be at 6% NaOH/DM and 68ºC. At these conditions, glucan yield reached close to 90% of theoretical, while xylan conversion was 71 % of theoretical. These values are 5 and 9 times higher than that of the untreated material, which supports the great potential of this one-step combined pre-treatment technology for sugar production from lignocellulosic substrates
Idioma:: English
Relación:: S2009/ENE-1743/RESTOENE
Autor/Productor:: Duque, Aleta; Manzanares, Paloma; Ballesteros, Ignacio; Negro, Maria José; Oliva, Jose Miguel; Saez, Felicia; Ballesteros, Mercedes
Dereitos:: info:eu-repo/semantics/openAccess
Data:: 2013-12-12
Tipo de recurso:: info:eu-repo/semantics/article

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