Ability of a Cellobiohydrolase I+II Mixture and Endoglucanase of the Trichoderma reesei Strain to Change Lyocell Fibres
Research and development
Authors:
- Oztruk Bahar Hale
Christian-Doppler-Laboratory for Textile and Fibre Chemistry in Cellulosics, Institute of Textile Chemistry and Textile Physics, University of Innsbruck, Dornbirn, Austria - Ehrhardt Analise (j/w)
- Ehrhardt Analise
Center for Fiber and Textile Science, Kyoto Institute of Technology, Kyoto, Japan - Vu-Manh Hai
Christian-Doppler-Laboratory for Textile and Fibre Chemistry in Cellulosics, Institute of Textile Chemistry and Textile Physics, University of Innsbruck, Dornbirn, Austria - Vu-Manh Hai
Faculty of Textile-Garment Technology and Fashion Design, Hanoi University of Technology, Hanoi, Vietnam - Oksanen Tarja
VTT Biotechnology, Espoo, Finland - Široká Barbora
Christian-Doppler-Laboratory for Textile and Fibre Chemistry in Cellulosics, Institute of Textile Chemistry and Textile Physics, University of Innsbruck, Dornbirn, Austria - Suurnakki Anna
VTT Biotechnology, Espoo, Finland - Bechtold Thomas
Christian-Doppler-Laboratory for Textile and Fibre Chemistry in Cellulosics, Institute of Textile Chemistry and Textile Physics, University of Innsbruck, Dornbirn, Austria
 Full text | Abstract: Lyocell fibers were treated for 24 h with two different types of cellulase enzymes, endoglucanase (EG) and a mixture of cellobiohydrolases (CBH I+II) from the Trichoderma reesei strain. After treating the fibers with 0.5 and 2 mg/g of EG and 2 mg/g of CBH, the fiber surface was damaged (observed by optical microscope), the fibers became brittle, and hence mechanical properties such as the tensile strength, elongation at break and abrasion resistance decreased. The weight loss (WL) test using 6 % NaOH alone, 4 % urea alone and their mixture showed that the WL of the fibers was not affected by the enzymatic treatments. The moisture regain, degree of polymerisation, crystallinity index, measured by ATR (attenuated total reflectance), and the FTIR of the enzyme treated fibers also did not change.
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Tags: cellulose, enzyme, fibre, lyocell, treatment.
Citation: Öztürk H. B., Ehrhardt A., Vu-Manh H., Oksanen T., Široká B., Suurnakki A., Bechtold T.; Ability of a Cellobiohydrolase I+II Mixture and Endoglucanase of the Trichoderma Reesei Strain to Change Lyocell Fibres. FIBRES & TEXTILES in Eastern Europe 2011, Vol. 19, No. 4 (87) pp. 23-27.