کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
17641 42686 2010 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enzymatic grafting of functional molecules to the lignin model dibenzodioxocin and lignocellulose material
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Enzymatic grafting of functional molecules to the lignin model dibenzodioxocin and lignocellulose material
چکیده انگلیسی

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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Enzyme and Microbial Technology - Volume 46, Issues 3–4, 5 March 2010, Pages 272–280
نویسندگان
, , , , ,