Effect of pretreatment severity on the conversion of barley straw to fermentable substrates and the release of inhibitory compounds

Panagiotopoulos, IA; Bakker, RR; de Vrije, T; Koukios, EG

dc.contributor.author	Panagiotopoulos, IA	en
dc.contributor.author	Bakker, RR	en
dc.contributor.author	de Vrije, T	en
dc.contributor.author	Koukios, EG	en
dc.date.accessioned	2014-03-01T01:35:36Z
dc.date.available	2014-03-01T01:35:36Z
dc.date.issued	2011	en
dc.identifier.issn	09608524	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21115
dc.subject	Barley straw	en
dc.subject	Dilute-acid pretreatment	en
dc.subject	Fermentable substrate	en
dc.subject	Inhibitors	en
dc.subject	Sugar yield	en
dc.subject.other	Chemical pre-treatment	en
dc.subject.other	Dilute-acid	en
dc.subject.other	Fermentable sugars	en
dc.subject.other	Inhibitory compounds	en
dc.subject.other	Levulinic acid	en
dc.subject.other	Pre-Treatment	en
dc.subject.other	Pretreatment conditions	en
dc.subject.other	Process condition	en
dc.subject.other	Severity factor	en
dc.subject.other	Sugar yield	en
dc.subject.other	Corrosion inhibitors	en
dc.subject.other	Enzymatic hydrolysis	en
dc.subject.other	Formic acid	en
dc.subject.other	Sugars	en
dc.subject.other	Sulfuric acid	en
dc.subject.other	Substrates	en
dc.subject.other	acetic acid	en
dc.subject.other	arabinose	en
dc.subject.other	formic acid	en
dc.subject.other	furfural	en
dc.subject.other	galactose	en
dc.subject.other	glucose	en
dc.subject.other	levulinic acid	en
dc.subject.other	sugar	en
dc.subject.other	sulfuric acid	en
dc.subject.other	xylose	en
dc.subject.other	barley	en
dc.subject.other	enzyme activity	en
dc.subject.other	fermentation	en
dc.subject.other	glucose	en
dc.subject.other	hydrolysis	en
dc.subject.other	inhibitor	en
dc.subject.other	straw	en
dc.subject.other	substrate	en
dc.subject.other	sugar	en
dc.subject.other	article	en
dc.subject.other	barley	en
dc.subject.other	biotechnology	en
dc.subject.other	controlled study	en
dc.subject.other	dilution	en
dc.subject.other	fermentation	en
dc.subject.other	hydrolysis	en
dc.subject.other	inhibition kinetics	en
dc.subject.other	nonhuman	en
dc.subject.other	priority journal	en
dc.subject.other	straw	en
dc.subject.other	Biotechnology	en
dc.subject.other	Carbohydrates	en
dc.subject.other	Fermentation	en
dc.subject.other	Hordeum	en
dc.subject.other	Hydrogen-Ion Concentration	en
dc.subject.other	Hydrolysis	en
dc.subject.other	Organic Chemicals	en
dc.subject.other	Substrate Specificity	en
dc.subject.other	Time Factors	en
dc.subject.other	Waste Products	en
dc.subject.other	Hordeum	en
dc.title	Effect of pretreatment severity on the conversion of barley straw to fermentable substrates and the release of inhibitory compounds	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.biortech.2011.09.090	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.biortech.2011.09.090	en
heal.publicationDate	2011	en
heal.abstract	The production of fermentable substrates from barley straw under various process conditions was studied. Pretreatment included chemical pretreatment with dilute-acid followed by enzymatic hydrolysis; the pretreatment conditions were expressed in a combined severity factor, CS, which ranged in the present study from -1.6 to 1.1. Considering the production of fermentable sugars and the release of inhibitory compounds, the optimal pretreatment conditions were 170. °C, 0% sulfuric acid and 60. min, corresponding to CS -0.4. Under these conditions, 21.4. g glucose/L, 8.5. g xylose/L, and 0.5. g arabinose/L were produced, while 0.1. g HMF/L, 0.4. g furfural/L, 0.0. g levulinic acid/L, 0.0. g formic acid/L, and 2.1. g acetic acid/L were released. The ratio of Σsugars/Σinhibitors proved to be a good tool for evaluating the suitability of hydrolysate for fermentation purposes. © 2011 Elsevier Ltd.	en
heal.journalName	Bioresource Technology	en
dc.identifier.doi	10.1016/j.biortech.2011.09.090	en
dc.identifier.volume	102	en
dc.identifier.issue	24	en
dc.identifier.spage	11204	en
dc.identifier.epage	11211	en