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020 _a9783642378614
024 7 _a10.1007/978-3-642-37861-4
_2doi
040 _dES-MaUEC
050 4 _aTP339
_b.F373 2013
100 1 _aFaraco, Vincenza
_eeditor literario
_0Local
_985585
245 1 0 _aLignocellulose Conversion :
_bEnzymatic and Microbial Tools for Bioethanol Production
_cedited by Vincenza Faraco.
260 _aBerlin, Heidelberg
_bSpringer International Publishing
_c2013
300 _a1 recurso en línea (X, 199 p.)
_b8 ilustraciones, 4 ilustraciones en color
336 _aTexto (visual)
_btxt
_2rdacontent
337 _aelectrónico
_bc
_2rdamedia
338 _arecurso electrónico
_bcr
_2rdacarrier
505 0 _aIntroduction: Potential of Cellulosic Ethanol -- Sources for Lignocellulosic Raw Materials for the Production of Ethanol -- The Pretreatment Step in Lignocellulosic Biomass Conversion: Current Systems and New Biological Systems -- The Saccharification Step: Trichoderma Reesei Cellulase Hyper Producer Strains.-Â{u4A25} Saccharification Step: the Main Enzymatic Components -- Extremophilic (Hemi)cellulolytic Microorganisms and Enzymes -- The Alcohol Fermentation Step: the Most Common Ethanologenic Microorganisms Among Yeasts, Bacteria and Filamentous Fungi -- Other Ethanologenic Microorganisms -- Consolidated Bioprocessing for Improving Cellulosic Ethanol Production.
520 _aLignocellulose conversion stands out as a key process for the sustainable production of renewable fuels and chemicals. The use of lignocellulosic materials for second generation ethanol production makes it possible to minimize the conflict between land use for food (and feed) and energy production. The lignocellulosic raw materials are less expensive and they present a more even geographical distribution than does conventional agricultural feedstock. Residual biomass such as agro-industrial wastes, agricultural and forest crop residues and the organic and paper fractions of municipal solid waste make up a large percentage of lignocelluloses. Moreover, second generation ethanol production and use show lower greenhouse gas emissions than the first generation fuels, reducing environmental impacts, particularly in terms of climate change. Lignocellulose conversion into ethanol commonly involves a pretreatment to remove the barrier of lignin and expose plant cell wall polysaccharides, enzymatic saccharification of sugars with a cocktail of cellulolytic and hemicellulolytic enzymes, and fermentation of the sugars with ethanologenic microorganisms. The commercialization of the process to produce cellulosic ethanol is still limited due to the high costs of current technologies, above all the (hemi)cellulolytic enzymes required to hydrolyze the polysaccharides. The enzymatic hydrolysis may take place in a separate step followed by fermentation called separate hydrolysis and fermentation, or it may take place together with the fermentation in a simultaneous saccharification and fermentation of hexoses process or simultaneous saccharification and co-fermentation of both hexoses and pentoses. The ultimate objective is one-step consolidated bioprocessing of lignocellulose into bioethanol, in which all the steps take place in a single reactor where a single micro-organism or microbial consortium converts pre-treated biomass into ethanol. This book presents the main tools, the current technological developments and future prospects in cellulosic ethanol production and research.
650 7 _2embne
_9165252
_aBiomasa
856 4 0 _uhttps://go.openathens.net/redirector/universidadeuropea.es?url=https://link.springer.com/book/10.1007/978-3-642-37861-4
_zAcceso a este recurso digital (usuarios Universidad Europea de Madrid)
907 _a.b12821068
_b10-10-17
_c01-10-14
942 _2lcc
_cLE
945 _aTP339 .F373 2013 EB
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