skip to main content
Language:
Search Limited to: Search Limited to: Resource type Show Results with: Show Results with: Search type Index

Enhanced energy savings in enzymatic refining of hardwood and softwood pulp

Energy, sustainability and society, 2023-12, Vol.13 (1), p.19-15, Article 19 [Peer Reviewed Journal]

The Author(s) 2023 ;The Author(s) 2023. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;ISSN: 2192-0567 ;EISSN: 2192-0567 ;DOI: 10.1186/s13705-023-00398-0

Full text available

Citations Cited by
  • Title:
    Enhanced energy savings in enzymatic refining of hardwood and softwood pulp
  • Author: Nagl, Martin ; Haske-Cornelius, Oskar ; Bauer, Wolfgang ; Nyanhongo, Gibson S. ; Guebitz, Georg M.
  • Subjects: CellG5 ; Cellobiohydrolase ; Economics and Management ; Endoglucanase ; Energy ; Energy conservation ; Energy Policy ; Energy requirements ; Enzymatic activity ; Enzyme activity ; Enzymes ; Glucosidase ; Hardwood ; Hardwoods ; High performance liquid chromatography ; Laboratories ; Liquid chromatography ; Paper production ; Polysaccharides ; Pulp ; Refining ; Renewable and Green Energy ; Smoothness ; Softwood ; Softwoods ; Substrates ; Sulfate pulp ; Sustainable Development ; Synergistic effect ; Tensile strength ; Xylanase ; β-Glucosidase
  • Is Part Of: Energy, sustainability and society, 2023-12, Vol.13 (1), p.19-15, Article 19
  • Description: Background Pulp refining is an energy consuming, but integral part of paper production with the aim to increase tensile strength and smoothness of paper sheets. Commercial enzyme formulations are used to lower the energy requirements by pre-treatment of pulp before refining. However, a high number of different commercial enzyme products are available on the market containing enzymes of varying origin and composition, which complicates the prediction of their behavior, especially using different pulp types. Results Endoglucanase-rich enzyme formulations were characterized regarding enzyme activity at different temperatures, resulting in a significant decrease of activity above 70 °C. Some enzyme preparations additionally contained arabinosidase, xylanase and β-glucosidase activity consequently resulting in a release of xylose and glucose from pulp as determined by high-performance liquid chromatography. Interestingly, one enzyme formulation even showed lytic polysaccharide monooxygenase (LPMO) activity of 3.05 nkat mg −1 . A correlation between enzyme activity using the endoglucanase specific derivatized cellopentaose (CellG5) substrate and enzyme performance in laboratory PFI (Papirindustriens forskningsinstitut) refining trials was observed on softwood pulp resulting in a maximum increase in the degree of refining values from 27.7°SR to 32.7°SR. When added to a purified endoglucanase enzyme (31.6°SR), synergistic effects were found for cellobiohydrolase II (34.7°SR) or β-glucosidase enzymes (35.7°SR) in laboratory refining. Comparison with previously obtained laboratory refining results on hardwood pulp allowed differences in enzyme performance based on varying pulp types to be elucidated. Conclusions Interestingly, the individual enzymes indeed showed different refining effects on softwood and hardwood pulp. This difference could be predicted after development of an adapted enzyme activity assay by combination of the derivatized cellopentaose CellG5 substrate with either softwood or hardwood sulfate pulp.
  • Publisher: Berlin/Heidelberg: Springer Berlin Heidelberg
  • Language: English
  • Identifier: ISSN: 2192-0567
    EISSN: 2192-0567
    DOI: 10.1186/s13705-023-00398-0
  • Source: Springer Nature OA/Free Journals
    ROAD: Directory of Open Access Scholarly Resources
    ProQuest Central
    DOAJ Directory of Open Access Journals
Back to results list
INSPIRE LIBRARY - TON DUC THANG UNIVERSITY (84-028) 37 755 057 Feedback
19 Nguyen Huu Tho St. Dist.7, HCM thuvien@tdtu.edu.vn

Copyright © 2017 INSPIRE LIBRARY - TON DUC THANG UNIVERSITY

Searching Remote Databases, Please Wait