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

Endry Nugroho Prasetyo, Tukayi Kudanga, Lars Østergaard, Jorge Rencoret, Ana Gutiérrez, José C. del Río, J. Ignacio Santos, Lidia Nieto, Jesús Jiménez-Barbero, Angel T. Martínez, Jiebing Li, Göran Gellerstedt, Stéphane Lepifre, Carla Silva, Su Yeon Kim, Artur Cavaco-Paulo, Bente Seljebakken Klausen, Bjart Frode Lutnaes, Gibson S. Nyanhongo, Georg M. Guebitz

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

115 Citas (Scopus)

Resumen

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 17 h of incubation, respectively. Interestingly, FTIR spectroscopy, 13C 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.

Idioma originalInglés
Páginas (desde-hasta)5054-5062
Número de páginas9
PublicaciónBioresource Technology
Volumen101
N.º14
DOI
EstadoPublicada - jul. 2010
Publicado de forma externa

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