Ethanol/water pulp enzymatic pretreatment: Chemical and FTIR-PCA analyses
-
D. Ruzene
and
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.
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© 2007 Institute of Chemistry, Slovak Academy of Sciences
Articles in the same Issue
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Articles in the same Issue
- 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
