RT Journal Article
T1 Search for optimum conditions of wheat straw hemicelluloses cold alkaline extraction process
A1 García Domínguez, Juan Carlos
A1 Díaz Blanco, Manuel Jesús
A1 García Domínguez, María Trinidad
A1 Feria Infante, Manuel Javier
A1 Gómez Lozano, D. M.
A1 López Baldovín, Francisco
AB A method for the selective extraction of hemicellulose from wheat straw involving cold alkaline extractionand subsequent separation by precipitation with ethanol is proposed. Wheat straw affords selectiveseparation of the hemicellulose fraction from the cellulose and lignin fractions with the proposed method.The hemicellulose yield was optimized by using a 2n factor design to examine the influence of temperatures(temperature was designed between 20 and 40 ◦C), operation times (operation time was designedbetween 30 and 60 min) and alkali concentrations (alkali concentration was designed between 80 and120 g L−1). These conditions allowed 56.1% of all hemicellulose initially present in the raw material, and59.1% of the lignin, to be extracted. Subsequent separation of hemicellulose in the liquid phase from thecold alkaline extraction by precipitation with ethanol provided a fraction containing 39.4% of all hemicellulose(45.2% hemicellulose in extract/total extract) and only 12% of all lignin in the raw material.
PB Elsevier
SN 1369-703X
YR 2013
FD 2013
LK http://hdl.handle.net/10272/10358
UL http://hdl.handle.net/10272/10358
LA eng
NO García Domínguez, J.C., Díaz Blanco, M.J., García Domínguez, M.T., Feria Infante, M.J., Gómez Lozano, D.M.:"Search for optimum conditions of wheat straw hemicelluloses cold alkaline extraction process". Biochemical Engineering Journal. Vol. 71, págs. 127-133, (2013). ISSN 1369-703X
NO The authors are grateful for the FPU grant from the Spanish Ministry of Education. Also they thank to Spanish Ministry of Economy and Competitiveness (former Ministry of Science and Innovation) contracts. The authors acknowledge financial support for this investigation has been provided by CDTI (CENIT-E-CDTI-BioSos-CEN-2009-1040) and supported by Ministry of Economy and Competitiveness, "Local Investment fund for employment". Government of Spain, Junta de Andalucia, CICYT-FEDER (Science and Technology Inter Ministerial Commission, Spanish Government - European Regional Development Fund), project number AGL2009-13113 and the business group ACCIONA INFRAESTRUCTURAS, S.A.
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026