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Enzymatic grafting of functional molecules to the lignin model dibenzodioxocin and lignocellulose material

Paper ID Volume ID Publish Year Pages File Format Full-Text
17641 42686 2010 9 PDF Available
Title
Enzymatic grafting of functional molecules to the lignin model dibenzodioxocin and lignocellulose material
Abstract

Laccase-mediated grafting of functional molecules presents an eco-friendly approach to functionalize lignocellulose materials. In this study functional molecules in the form of reactive phenolic amines, hydrophobicity enhancing fluorophenols and selected wood preservatives, were for the first time successfully coupled onto the lignin model compound dibenzodioxocin (Db) as demonstrated by HPLC-MS analysis. A 1:1-coupling was demonstrated for various combinations including Db and tyramine (m/z 620.5), Db and 3-O-methyldopamine (m/z 650.5), Db and 4-hydroxy-3-methoxybenzylamine (m/z 636.5), Db and 4-fluoro-2-methylphenol (m/z 609.5), and Db and 2-phenylphenol (m/z 653.5). Fungal laccases from Trametes hirsuta and T. villosa were more efficient in mediating the coupling of tyramine to dibenzodioxocin and beech (Fagus sylvatica) wood than a Bacillus sp. laccase with lower redox potential. This work presents for the first time a model for functionalizing of lignocellulose using the lignin model dibenzodioxocin.

Keywords
Laccase; Enzymatic functionalization; Dibenzodioxocin; Lignin
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Publisher
Database: Elsevier - ScienceDirect
Journal: Enzyme and Microbial Technology - Volume 46, Issues 3–4, 5 March 2010, Pages 272–280
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us