Pretreatments employed in lignocellulosic materials for bioethanol production: an overview
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Instituto Cubano de Investigaciones de los Derivados de la Caña de Azúcar
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Lignocellulosic materials are raw materials with high cellulose content and they constitute the most abun- dant sources of biomass on planet. They are attractive for their low cost and high availability in diverse climates and places for the bioethanol production, however, the main impediment for its use is the appro- priate selection from the technological and economic point of view of the stages of pretreatments and hydrolysis, that allow the breaking down of the lignocellulosic matrix to obtain the necessary substrates in the processes of fermentation. Pretreatment is an essential step in the enzymatic hydrolysis of biomass and subsequent production of bioethanol, which have been divided in three groups for its study in: physi- cal-chemical, hydrothermal and biological. The aim of this paper is to analyze the potential of several pre- treatment methods for bioethanol production from lignocellulosic materials.
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