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

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dc.contributor.authorDuque, Aleta
dc.contributor.authorManzanares, Paloma
dc.contributor.authorBallesteros, Ignacio
dc.contributor.authorNegro, Maria José
dc.contributor.authorOliva, Jose Miguel
dc.contributor.authorSaez, Felicia
dc.contributor.authorBallesteros, Mercedes
dc.date.accessioned2022-09-08T11:09:51Z
dc.date.available2022-09-08T11:09:51Z
dc.date.issued2013-12-12
dc.description.abstractIn 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
dc.identifier.issn1359-5113
dc.identifier.urihttps://emimasd.consorciomadrono.es/handle/11034/72
dc.language.isoeng
dc.relationS2009/ENE-1743/RESTOENE
dc.rightsopenAccess
dc.rights.uriinfo:eu-repo/semantics/openAccess
dc.subjectCiencias de la vida
dc.titleOPTIMIZATION OF INTEGRATED ALKALINE-EXTRUSION PRETREATMENT OF BARLEY STRAW FOR SUGAR PRODUCTION BY ENZYMATIC HYDROLYSIS
dc.typearticle
dc.typeinfo:eu-repo/semantics/submittedVersion
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