Abstract
The effects of alkaline treatments of the wheat straw with sodium hydroxide were investigated. The optimal condition for extraction of hemicelluloses was found to be with 0.50 mol/l sodium hydroxide at 55 °C for 2 h. This resulted in the release of 17.3% of hemicellulose (% dry starting material), corresponding to the dissolution of 49.3% of the original hemicellulose. The yields were determined by gravimetric analysis and expressed as a proportion of the starting material. Chemical composition and physico-chemical properties of the samples of hemicelluloses were elucidated by a combination of sugar analyses, Fourier transform infrared (FTIR), and thermal analysis. The results showed that the treatments were very effective on the extraction of hemicelluloses from wheat straw and that the extraction intensity (expressed in terms of alkali concentration) had a great influence on the yield and chemical features of the hemicelluloses. The FTIR analysis revealed typical signal pattern for the hemicellulosic fraction in the 1,200–1,000 cm−1 region. Bands between 1,166 and 1,000 cm−1 are typical of xylans.
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Gonçalves, A. R., Benar, P., Costa, S. M., Ruzene, D. S., Moriya, R. Y., & Luz, S. M., et al. (2005). Applied Biochemistry and Biotechnology, 121, 821–826.
Küçük, M. M., & Demirbas, A. (1997). Energy Conversion Management, 38(2), 151–165.
Sun, Y., & Cheng, J. (2002). Bioresource Technology, 83, 1–11.
Montane, D., Farriol, X., Salvado, J., Jollez, P., & Chornet, E. (1998). Journal of Wood Chemistry and Technology, 18, 171.
Fengel, D., & Wegener, G. (1989). Wood chemistry, ultrastructure, reactions p. (p. 613). Berlin: Walter de Gruyter.
McDougall, G. J., Morrison, I. M., Stewart, D., Weyers, J. D. B., & Hillman, J. R. J. (1993). Science of Food and Agriculture, 621–20.
Jackson, M. G. (1977). Animal Feed Science and Technology, 2, 105–130.
Spencer, R. R., & Akin, D. E. (1980). Journal of Animal Science, 51(5), 1189–1196.
Lima, D. U., Oliveira, R. C., & Buckeridge, M. S. (2003). Carbohydrate Polymers, 52, 367–373.
Saake, B., Busse, T., & Puls, J. (2005). Appita, 2, 141–146.
Doner, L. W., & Hicks, K. (1997). Cereal Chemistry, 74, 176.
Rocha, G. J. M. (2000). PhD thesis, São Carlos/Universidade de São Paulo, Brazil,
Browing, B. L. (1963). The chemistry of wood p. (p. 574). New York: Interscience.
Ruzene, D. S., Gonçalves, A. R., Teixeira, J. A., & Pessoa De Amorim, M. T. (2007). Animal Feed Science and Technology, 136–140.
Ferraz, A., Rodriguez, J., Freer, J., & Baeza, J. (2000). Bioresource Technology, 74, 201–212.
Wilkie, K. C. B. (1979). Advances in Carbohydrate Chemistry and Biochemistry, 36, 215–264.
Ebringerová, A., & Heinze, T. (2000). Macromolecular rapid communications, 21, 542–556.
Ternrud, I. (1987). Degradation of untreated and alkalitreated straw polysaccharides in ruminants. Uppsala: The Swedish University of Agricultural Sciences.
Faix, O. (1991). Holzforschung, 45, 21–27.
Gonçalves, A. R., & Ruzene, D. S. (2001). Applied Biochemistry and Biotechnology, 91–93, 63–70.
Kacurakova, M., Belton, P. S., Wilson, R. H., Hirsch, J., & Ebringerova, A. (1998). Journal of the Science of Food and Agriculture, 77, 38–44.
Kacurakora, M., Ebringerova, A., Hirsch, J., & Hromadkova, Z. (1994). Journal of the Science of Food and Agriculture, 66, 423.
Gupta, S., Madan, R. N., & Bansal, M. C. (1987). Tappi Journal, 70, 113–114.
Acknowledgements
The authors acknowledge the financial support from FCT (Fundação para a Ciência e Tecnologia/Portugal, SFRH/BPD/26156/2005 and SFRH/BPD/26108/2005), as well as from FAPESP (Fundação de Amparo a Pesquisa do Estado de São Paulo/Brazil) and CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico).
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Ruzene, D.S., Silva, D.P., Vicente, A.A. et al. An Alternative Application to the Portuguese Agro-Industrial Residue: Wheat Straw. Appl Biochem Biotechnol 147, 85–96 (2008). https://doi.org/10.1007/s12010-007-8066-2
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DOI: https://doi.org/10.1007/s12010-007-8066-2