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https://hdl.handle.net/1822/42679
Título: | Combined alkali and hydrothermal pretreatments for oat straw valorization within a biorefinery concept |
Autor(es): | Romaní, Aloia Tomaz, Pablo D. Garrote, Gil Teixeira, J. A. Domingues, Lucília |
Palavras-chave: | Oat straw Lime pretreatment Autohydrolysis Biorefinery Bioethanol |
Data: | Nov-2016 |
Editora: | Elsevier B.V. |
Revista: | Bioresource Technology |
Citação: | Romaní, Aloia; Tomaz, Pablo D.; Garrote, Gil; Teixeira, J. A.; Domingues, Lucília, Combined alkali and hydrothermal pretreatments for oat straw valorization within a biorefinery concept. Bioresource Technology, 220, 323-332, 2016 |
Resumo(s): | The aim of this work was the evaluation of lime pretreatment combined or not with previous step of autohydrolysis for oat straw valorization. Under selected conditions of lime pretreatment, 96% of glucan and 77% of xylan were recovered and 42% of delignification was achieved. Xylose fermentation to ethanol by metabolic engineered Saccharomyces cerevisiae (MEC1133) strain improved the ethanol production by 22% achieving 41 g/L. Alternatively, first step of autohydrolysis (S0=4.22) allowed a high oligosaccharides recovery (68%) and subsequent lime pretreatment attained a 57% of delignification and 99% of glucan to glucose conversion. Oat straw processed by autohydrolysis and lime pretreatment reached the maximal ethanol concentration (50 g/L). Both strategies led to oat straw valorization into bioethanol, oligosaccharides and lignin indicating that these pretreatments are adequate as a first stage within an oat straw biorefinery. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/42679 |
DOI: | 10.1016/j.biortech.2016.08.077 |
ISSN: | 0960-8524 |
e-ISSN: | 0960-8524 |
Versão da editora: | http://www.journals.elsevier.com/bioresource-technology/ |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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document_41152_1.pdf | 958,6 kB | Adobe PDF | Ver/Abrir |