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Polymerization of lignosulfonates by the laccase-HBT (1-hydroxybenzotriazole) system improves dispersibility

descriptionPublicationkeyboard_double_arrow_right Article 01 Jul 2010 Spain, Portugal English Publisher:Elsevier BVJournal:Bioresource Technology, volume 101, pages 5,054-5,062 (issn: 0960-8524,

Authors: Prasetyo, E. N.; Kudanga, T.; Østergaard, L.; Rencoret, J.; Gutiérrez, A.; Río, J. C. del; Santos, J. I.; +13 Authors

doi: 10.1016/j.biortech.2010.01.048

pmid: 20176477

handle: 10261/39908 , 1822/14756

Polymerization of lignosulfonates by the laccase-HBT (1-hydroxybenzotriazole) system improves dispersibility

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Abstract

The ability of laccases from Trametes villosa (TvL), Myceliophthora thermophila (MtL), Trametes hirsuta (ThL) and Bacillus subtilis (BsL) to improve the dispersion properties of calcium lignosulfonates 398 in the presence of HBT as a mediator was investigated. Size exclusion chromatography showed an extensive increase in molecular weight of the samples incubated with TvL and ThL by 107% and 572% from 28400 Da after 17h of incubation, respectively. Interestingly, FTIR spectroscopy, (13)C NMR and Py-GC/MS analysis of the treated samples suggested no substantial changes in the aromatic signal of the lignosulfonates, a good indication of the ability of TvL/ThL-HBT systems to limit their effect on functional groups without degrading the lignin backbone. Further, the enzymatic treatments led to a general increase in the dispersion properties, indeed a welcome development for its application in polymer blends.

Countries

Spain, Portugal

Related Organizations

Spanish National Research Council
Spain
Royal Institute of Technology
Sweden
Centro de Investigaciones Biológicas
Spain
Institute of Natural Resources and Agrobiology of Seville
Spain
Borregaard
Norway

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Keywords

Calcium lignosulfonates, Photons, Science & Technology, Magnetic Resonance Spectroscopy, Time Factors, Polymers, Laccase, Dispersion, Triazoles, Lignin, Gas Chromatography-Mass Spectrometry, Polymerization, Water Purification, Molecular Weight, Biodegradation, Environmental, Spectroscopy, Fourier Transform Infrared, Sulfones, Enzymatic modification, Bacillus subtilis

1 Research products, page 1 of 1

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