About: High solid fed-batch SSF with delayed inoculation for improved production of bioethanol from wheat straw

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Simultaneous saccharification and fermentation (SSF) of lignocellulosic substrate is limited by low glucose availability in the early stages of SSF, different temperature optima for enzymatic hydrolysis and fermentation, and low ethanol productivity. These were eliminated in this work by carrying out the pre-saccharification step at the optimum temperature for cellulolytic enzymes. When inoculation was delayed for 12 h (dSSF process), ethanol productivity was enhanced and the process was shortened by 60% compared to SSF, while the final ethanol concentration remained the same. Increased loading of acid-pretreated wheat straw in batch mode did not improve the ethanol concentration; although preconcentration of substrate from 36% to 66% of wet solid enabled a 48% increase in glucose concentration it negatively influenced fermentation. The fed-batch dSSF process, with gradual feeding of pre-hydrolysed medium, carried out in two bioreactors, enabled us to increase the final ethanol concentration and to eliminate problems associated with high concentrations of inhibitors in batch mode and high viscosity of the medium. Simultaneous saccharification and fermentation (SSF) of lignocellulosic substrate is limited by low glucose availability in the early stages of SSF, different temperature optima for enzymatic hydrolysis and fermentation, and low ethanol productivity. These were eliminated in this work by carrying out the pre-saccharification step at the optimum temperature for cellulolytic enzymes. When inoculation was delayed for 12 h (dSSF process), ethanol productivity was enhanced and the process was shortened by 60% compared to SSF, while the final ethanol concentration remained the same. Increased loading of acid-pretreated wheat straw in batch mode did not improve the ethanol concentration; although preconcentration of substrate from 36% to 66% of wet solid enabled a 48% increase in glucose concentration it negatively influenced fermentation. The fed-batch dSSF process, with gradual feeding of pre-hydrolysed medium, carried out in two bioreactors, enabled us to increase the final ethanol concentration and to eliminate problems associated with high concentrations of inhibitors in batch mode and high viscosity of the medium. (en)
Title	High solid fed-batch SSF with delayed inoculation for improved production of bioethanol from wheat straw High solid fed-batch SSF with delayed inoculation for improved production of bioethanol from wheat straw (en)
skos:prefLabel	High solid fed-batch SSF with delayed inoculation for improved production of bioethanol from wheat straw High solid fed-batch SSF with delayed inoculation for improved production of bioethanol from wheat straw (en)
skos:notation	RIV/60461373:22330/14:43896443!RIV15-MSM-22330___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(ME10146)
http://linked.open...iv/cisloPeriodika	únor
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Melzoch, Karel Rychtera, Mojmír Patáková, Petra Paulová, Leona
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoká škola chemicko-technologická v Praze / Fakulta potravinářské a biochemické technologie
http://linked.open...dnocenehoVysledku	19095
http://linked.open...ai/riv/idVysledku	RIV/60461373:22330/14:43896443
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	high solid; fed-batch; saccharification; wheat straw; Bioethanol (en)
http://linked.open.../riv/klicoveSlovo	Bioethanol wheat straw saccharification fed-batch high solid
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[6ED5FF37CF53]
http://linked.open...i/riv/nazevZdroje	Fuel
http://linked.open...in/vavai/riv/obor	EI
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Conversion of wheat straw and other lignocellulosic materials to ethanol
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	122
http://linked.open...iv/tvurceVysledku	Melzoch, Karel Patáková, Petra Paulová, Leona Rychtera, Mojmír
http://linked.open...ain/vavai/riv/wos	000331544100034
issn	0016-2361
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.fuel.2014.01.020
http://localhost/t...ganizacniJednotka	22330

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