Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/41025

TitleEnzymatic treatments to improve mechanical properties and surface hydrophobicity of jute fiber membranes
Author(s)Dong, Aixue
Fan, Xuerong
Wang, Qiang
Yu, Yuanyuan
Cavaco-Paulo, Artur
KeywordsNatural fiber
Fiber membrane
Laccase
Mediator
Xylanase
Cellulase
Issue dateMay-2016
PublisherNorth Carolina State University
JournalBioresources
CitationDong, Aixue; Fan, Xuerong; Wang, Qiang; Yu, Yuanyuan; Paulo, Artur Cavaco, Enzymatic treatments to improve mechanical properties and surface hydrophobicity of jute fiber membranes. BioResources, 11(2), 3289-3302, 2016
Abstract(s)Fiber membranes prepared from jute fragments can be valuable, low cost, and renewable. They have broad application prospects in packing bags, geotextiles, filters, and composite reinforcements. Traditionally, chemical adhesives have been used to improve the properties of jute fiber membranes. A series of new laccase, laccase/mediator systems, and multi-enzyme synergisms were attempted. After the laccase treatment of jute fragments, the mechanical properties and surface hydrophobicity of the produced fiber membranes increased because of the cross-coupling of lignins with ether bonds mediated by laccase. The optimum conditions were a buffer pH of 4.5 and an incubation temperature of 60 °C with 0.92 U/mL laccase for 3 h. Laccase/guaiacol and laccase/alkali lignin treatments resulted in remarkable increases in the mechanical properties; in contrast, the laccase/2,2-azino-bis-(3-ethylthiazoline-6-sulfonate) (ABTS) and laccase/2,6-dimethoxyphenol treatments led to a decrease. The laccase/ guaiacol system was favorable to the surface hydrophobicity of jute fiber membranes. However, the laccase/alkali lignin system had the opposite effect. Xylanase/laccase and cellulase/laccase combined treatments were able to enhance both the mechanical properties and the surface hydrophobicity of jute fiber membranes. Among these, cellulase/laccase treatment performed better; compared to mechanical properties, the surface hydrophobicity of the jute fiber membranes showed only a slight increase after the enzymatic multi-step processes.
TypeArticle
URIhttp://hdl.handle.net/1822/41025
DOI10.15376/biores.11.2.3289-3302
ISSN1930-2126
e-ISSN1930-2126
Publisher versionhttp://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_11_2_3289_Dong_Enzymatic_Treatment_Mechanical_Properties
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

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