Ethanol/water pulp enzymatic pretreatment: Chemical and FTIR-PCA analyses
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D. Ruzene
und
A. Gonçalves
Abstract
Pulps obtained from ethanol/water cooking of sugarcane bagasse were treated at different times using xylanase enzyme obtained from Thermomyces lanuginosus IOC-4145 or commercially (Cartazyme HS, Sandoz Products Ltd.). The enzyme dosage was 18 IU per g of dry pulp and the time varied from 4 h to 12 h. When xylanase from T. lanuginosus was used, the kappa number and viscosity improved independently of the processing time used (4 h, 8 h, and 12 h). After chemical evaluation, the obtained pulps were classified using Fourier Transformed Infra-Red Spectroscopy and Principal Component Analysis. The results showed that the first three principal components explained more than 90 % of the total variance of the pulp spectra.
[1] Farrel, R. L., Viikari, L., and Senior, D., in Pulp Bleaching: Principles and Practice (Dence, C. W. and Reeve, D. W., Editors), p. 365. Tappi Press, Atlanta, 1996. Suche in Google Scholar
[2] Viikari, L., Kantelinen, A., Sundquist, J., and Linko, M., FEMS Microbiol. Rev. 13, 335 (1994). http://dx.doi.org/10.1111/j.1574-6976.1994.tb00053.x10.1111/j.1574-6976.1994.tb00053.xSuche in Google Scholar
[3] Valchev, I., Yotova, L., and Valcheva, E., Bioresour. Technol. 65, 57 (1998). http://dx.doi.org/10.1016/S0960-8524(98)00020-010.1016/S0960-8524(98)00020-0Suche in Google Scholar
[4] Ni, Y. H. and van Heiningen, A. R. P., Tappi J. 81, 141 (1998). Suche in Google Scholar
[5] Minor, J. L., in Pulp Bleaching: Principles and Practice (Dence, C.W. and Reeve, D.W., Editors), p. 25. Tappi Press, Atlanta, 1996. Suche in Google Scholar
[6] Wong, K. K. Y., de Jong, E., Saddler, J. N., and Allison, R. W., Appita J. 50, 415 (1997). Suche in Google Scholar
[7] Duarte, M. C. T., da Silva, E. C., Gomes, I. M. B., Ponezi, A. N., Portugal, E. P., Vicente, J. R., and Davanzo, E., Bioresour Technol. 88, 9 (2003). http://dx.doi.org/10.1016/S0960-8524(02)00270-510.1016/S0960-8524(02)00270-5Suche in Google Scholar
[8] Viikari, L., Ranua, M., Kantelinen, A., Linko, M., and Sundquist, J., in 3rd International Symposium on Wood and Pulping Chemistry Notes, p. 151. ATIP, Paris, 1987. Suche in Google Scholar
[9] Suurinäkki, A., Tenkanen, M., Buchert, J., and Viikari, L., in Advances in Biochemical Engineering/Biotechnology (Scheper, T., Editor), p. 262. Springer, Berlin, 1997. Suche in Google Scholar
[10] Ferraz, A., Aplicações da biotecnologia na produção de papel e celulose. Edgard Blücher, S~ao Paulo, 1999. Suche in Google Scholar
[11] Prasad, D. Y., Rajesh, K. S., Praburaj, T., Mohan Rao, N. R., and Joyce, T. W., Cell. Chem. Technol. 30, 463 (1996). Suche in Google Scholar
[12] Bajpai, P. and Bajpai, P. K., Tappi J. 79, 225 (1996). Suche in Google Scholar
[13] Kulkarni, N. and Rao, M., J. Biotechnol. 51,167 (1996). http://dx.doi.org/10.1016/0168-1656(96)01616-110.1016/0168-1656(96)01616-1Suche in Google Scholar
[14] Shah, A. K., Sidid, S. S., Ahmad, A., and Rele, M. V., Bioresour. Technol. 68, 133 (1999). http://dx.doi.org/10.1016/S0960-8524(98)00133-310.1016/S0960-8524(98)00133-3Suche in Google Scholar
[15] Gonçalves, A. R. and Ruzene, D. S., Appl. Biochem. Biotechnol. 91, 63 (2001). http://dx.doi.org/10.1385/ABAB:91-93:1-9:6310.1385/ABAB:91-93:1-9:63Suche in Google Scholar
[16] TAPPI Standard Methods, T 230 om-82. Technical Association of Pulp and Paper Industry, Norcross, GA, 1982. Suche in Google Scholar
[17] TAPPI Standard Methods, T 236 cm-85. Technical Association of Pulp and Paper Industry, Norcross, GA, 1985. Suche in Google Scholar
[18] Damaso, M. C. T., Andrade, C. M. M. C., and Pereira, J. N., Appl. Biochem. Biotechnol. 84–86, 821 (2000). http://dx.doi.org/10.1385/ABAB:84-86:1-9:82110.1385/ABAB:84-86:1-9:821Suche in Google Scholar
[19] Rocha, G. J. M., Silva, F. T., Curvelo, A. A. S., and Araújo, G. T., in Proceedings of the 5th Brazilian Symposium on the Chemistry of Lignins and Other Wood Components. Curitiba, Brazil, 1997. Suche in Google Scholar
[20] Faix, O., Böttcher, J. H., and Bertelt, E., in 8th International Conference on Fourier Transform Spectroscopy, Proceedings of SPIE, Vol. 1575 (Heise, H. M., Korte, E. H., and Siesler, H.W., Editors). The International Society for Optical Engineering, San Diego, CA, 1992. Suche in Google Scholar
[21] Morohoshi, N., in Wood and Cellulosic Chemistry (Hon, D. N. S. and Shiraishi, N., Editors), p. 331. Marcel Dekker, New York, 1991. Suche in Google Scholar
[22] Scarminio, I. S. and Bruns, R. E., Trends in Analytical Chemistry 8, 326 (1989). http://dx.doi.org/10.1016/0165-9936(89)87038-410.1016/0165-9936(89)87038-4Suche in Google Scholar
© 2007 Institute of Chemistry, Slovak Academy of Sciences
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Artikel in diesem Heft
- Peroxynitrite: In vivo and In vitro synthesis and oxidant degradative action on biological systems regarding biomolecular injury and inflammatory processes
- Coupling of microwave induced plasma optical emission spectrometry with HPLC separation for speciation analysis of Cr(III)/Cr(VI)
- Determination of nitrites by the formation of bisazo dye
- Determination of As(III) and total as in water by graphite furnace atomic absorption spectrometry after electrochemical preconcentration on a gold-plated porous glassy carbon electrode
- Exergoecological analysis of processing of SO2-containing gases from zinc production
- Chromaticity of poly(o-toluidine) matrix enhanced by anion-exchange mechanism
- Ethanol/water pulp enzymatic pretreatment: Chemical and FTIR-PCA analyses
- Study of controlled tetracycline release from porous calcium phosphate/polyhydroxybutyrate composites
- Spectroscopic and thermodynamic studies of complexation of some divalent metal ions with isatin-β-thiosemicarbazone
- Structural and spectroscopic analysis of dipeptide l-methionyl-glycine and its hydrochloride
- Excess molar volumes of the (cyclohexane + pentane, or hexane, or heptane, or octane, or nonane) systems at the temperature 298.15 K
- Solid-state vibrational spectra and theoretical study of alaninamide acetate
- Synthesis and antifungal activity of alkyland arylsulfanylpyridinylguanidines
- Isolation and identification of flower oil components from four Staphylea L. species
