Effect of autohydrolysis on Pinus radiata wood for hemicellulose extraction
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2018
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Elsevier Sci Ltd
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Santos TM, Alonso MV, Oliet M, Domínguez JC, Rigual V, Rodriguez F. Effect of autohydrolysis on Pinus radiata wood for hemicellulose extraction. Carbohydr Polym. 2018 Aug 15;194:285–93.
Abstract
Se estudió la extracción de hemicelulosa de la madera de pino aplicando un tratamiento de autohidrólisis. Se realizó un diseño experimental compuesto central utilizando diferentes temperaturas (150-190 °C) y tiempos (30-90 min) para seleccionar las condiciones de operación más favorables para maximizar la extracción de hemicelulosa y minimizar su degradación. Esta fase líquida se analizó por HPLC para cuantificar oligosacáridos, monosacáridos y productos de degradación. La composición de la madera autohidrolizada se determinó y caracterizó mediante FTIR y TGA. Se extrajo el 60% de las hemicelulosas a una temperatura de 170 °C en 60 min, presentándose principalmente en forma oligomérica en la fase líquida, permaneciendo la fase sólida enriquecida en celulosa y lignina.
The extraction of hemicellulose from pine wood was studied by applying autohydrolysis treatment. A central composite experimental design was carried out using different temperatures (150–190 °C) and times (30–90 min) to select the most favorable operating conditions for maximizing the extraction of hemicellulose and minimizing its degradation. This liquid phase was analyzed by HPLC to quantify oligosaccharides, monosaccharides and degradation products. The composition of the autohydrolyzed wood was determined and characterized, employing FTIR and TGA. Herein, 60% of the hemicelluloses were extracted under a temperature of 170 °C in 60 min, presenting primarily in an oligomeric form in the liquid phase, with the solid phase remaining enriched in cellulose and lignin.
The extraction of hemicellulose from pine wood was studied by applying autohydrolysis treatment. A central composite experimental design was carried out using different temperatures (150–190 °C) and times (30–90 min) to select the most favorable operating conditions for maximizing the extraction of hemicellulose and minimizing its degradation. This liquid phase was analyzed by HPLC to quantify oligosaccharides, monosaccharides and degradation products. The composition of the autohydrolyzed wood was determined and characterized, employing FTIR and TGA. Herein, 60% of the hemicelluloses were extracted under a temperature of 170 °C in 60 min, presenting primarily in an oligomeric form in the liquid phase, with the solid phase remaining enriched in cellulose and lignin.
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The authors are grateful to the “Ministerio de Economía y Competitividad” (Project CTQ2013-42006-R) for financial support.