Degradation of Lignin-Containing Materials by Xylanase in Biopreparation of Cotton

Csiszár, Emı́lia; Losonczi, A.; Koczka, Béla; Szakács, George; Pomlényi, A.

doi:10.1007/s10529-006-9042-6

Cited by 20 publications

(12 citation statements)

References 12 publications

(10 reference statements)

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“…In recent years, interest in xylanases have been increased due to their potential use in the pulp and paper industry, textile industry, food processing and wine industry (Hang and Woodams 1997;Csiszar et al 2006;Battan et al 2007Battan et al , 2008Dhiman et al 2008Dhiman et al , 2009.…”

Section: Introductionmentioning

confidence: 99%

Xylanase production using agro-residue in solid-state fermentation from Bacillus pumilus ASH for biodelignification of wheat straw pulp

et al. 2011

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Two stage statistical design was used to optimize xylanase production from Bacillus pumilus ASH under solid-state fermentation. Initially, Plackett-Burman designing (PB) was used for the selection of crucial production parameters. Peptone, yeast extract, incubation time, moisture level and pH were found to be the crucial factors for the xylanase production. Crucial variables were further processed through central composite designing (CCD) of response surface methodology (RSM) to maximize the xylanase yield. Each significant factor was investigated at five different levels to study their influence on enzyme production. Statistical approach resulted in 2.19-fold increase in xylanase yield over conventional strategy. The determination coefficient (R (2)) as shown by analysis of variance (ANOVA) was 0.9992, which shows the adequate credibility of the model. Potential of cellulase-free xylanase was further investigated for biobleaching of wheat straw pulp. Xylanase aided bleaching through XCDED(1)D(2) sequence resulted in 20 and 17% reduction in chlorine and chlorine dioxide consumption as compared to control. Significant increase in pulp brightness (%ISO), whiteness and improvement in various pulp properties was also observed.

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Section: Introductionmentioning

confidence: 99%

Xylanase production using agro-residue in solid-state fermentation from Bacillus pumilus ASH for biodelignification of wheat straw pulp

et al. 2011

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“…However, the drawbacks in the case of the above processes are toxicity, high cost, difficulties in recovery, severe side-reaction, and instability in processing. During isolation of lignin, many potentially toxic chemicals such as sulfuric acid or sodium hydroxide may often been found to modify lignin, cellulose or other related compounds by change chemical structure due to the breakdown of some inter unit linkages under the acid or alkaline isolation conditions (Lundquist, 1992;Csiszár, et al, 2006). In addition, none of the isolation processes that have been previously attempted facilitates the production of lignin.…”

Section: Introductionmentioning

confidence: 99%

Isolation and Characterization of Lignin from Rubber Wood in Ionic Liquid Medium

Shamsuri¹,

Abdullah²

2010

MAS

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In this study, lignin was isolated from rubber wood by means of ionic liquid (1,3-dimethylimidazolium methylsulfate). The optimum parameters to isolate lignin were investigated which include the concentrations of ionic liquid (0.1, 0.2, 0.3, 0.4, 0.5 moles), isolation durations (30, 60, 90, 120, 150 minutes), and isolation temperatures (25, 40, 60, 80, 100°C). The optimum parameters for lignin isolation are 0.5 moles concentration, 120 minutes and 100ºC. Lignin could be isolated from rubber wood up to 13.03wt.% by ionic liquid however, in comparison with acid and alkaline isolation, they give better yields than ionic liquid which 22.15wt.% and 18.56wt.% of lignin, respectively. Lignin preliminary structures isolated by ionic liquid have been confirmed based on Fourier transform infrared (FTIR) results. From these results, isolated lignin by ionic liquid provides lignin without other related isolative. Apart from that, ionic liquid also could be recycled up to three times compared to acid and alkaline isolation methods.

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“…Enzymes such as cellulase, pectinase, and hemicellulase were reported to accelerate the degradation of holocellulose in cotton seed coat fragments, especially when applied together with ethylene diamine tetraacetic acid (EDTA) (Csiszár et al 1998. Csiszár et al (2006) suggested that xylanase pretreatment can destroy the lignocellulosic structure of cotton seed coat with the delignification and the lightness of the substrate enhanced in the subsequent alkaline scouring process. Cellulase can also degrade the lignocellulose in CSC (Csiszár et al 1998).…”

Section: Introductionmentioning

confidence: 99%

Analysis of the chemical composition of cotton seed coat by Fourier-transform infrared (FT-IR) microspectroscopy

et al. 2009

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To improve knowledge on the biodegradation of cotton seed coat fragments in bioscouring, in this study Fourier-transform infrared (FT-IR) microspectroscopy was performed to analyze the composition of cotton seed coat. Microscope observation showed that cotton seed coat has a five-layer structure: epidermal layer, outer pigment layer, colorless layer, palisade layer, and inner pigment layer. Analysis of the FT-IR spectra from each layer shows that cutin, wax, cellulose, and pectin are the main components of the epidermal layer, while pectin and hemicellulose are the main constituents of the palisade layer, as well as aromatic and polyphenol, which are commonly considered as lignins. The main component of the outer and inner pigment layers is lignin. The results suggest that cellulase, pectinase, xylanase, and lignin oxidase are suitable for degradation of cotton seed coat. In addition, cutinase might be very promising in improving the enzymatic degradation of cotton seed coat.

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Degradation of Lignin-Containing Materials by Xylanase in Biopreparation of Cotton

Cited by 20 publications

References 12 publications

Xylanase production using agro-residue in solid-state fermentation from Bacillus pumilus ASH for biodelignification of wheat straw pulp

Xylanase production using agro-residue in solid-state fermentation from Bacillus pumilus ASH for biodelignification of wheat straw pulp

Isolation and Characterization of Lignin from Rubber Wood in Ionic Liquid Medium

Analysis of the chemical composition of cotton seed coat by Fourier-transform infrared (FT-IR) microspectroscopy

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