Abstract
Oxidation of lignin obtained from acetosolv and ethanol/water pulping of sugarcane bagasse was performed by phenol oxidases: tyrosinase (TYR) and laccase (LAC), to increase the number of carbonyl and hydroxyl groups in lignin, and to improve its chelating capacity. The chelating properties of the original and oxidized lignins were compared by monitoring the amount of Cu2+ bound to lignin by gel permeation chromatography. The Acetosolv lignin oxidized with TYR was 16.8% and with LAC 21% higher than that of the original lignin. For ethanol/water lignin oxidized with TYR was 17.2% and with LAC 18% higher than that of the original lignin.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Gonçalves, A. R., Benar, P., Costa, S. M., et al. (2005), Appl. Biochem. Biotechnol. 121–124, 821–826.
Gonçalves, A. R. and Soto-Oviedo, M. A. (2002), Appl. Biochem. Biotechnol. 98–100, 365–371.
Burton, S. (2003), G Laccases and Phenol Oxidases in organic synthesis: a review. Curr. Organic Chem. 7, 1317–1331.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2006 Humana Press Inc.
About this chapter
Cite this chapter
Calabria, G.M.M., Gonçalves, A.R. (2006). Obtainment of Chelating Agents Through the Enzymatic Oxidation of Lignins by Phenol Oxidase. In: McMillan, J.D., Adney, W.S., Mielenz, J.R., Klasson, K.T. (eds) Twenty-Seventh Symposium on Biotechnology for Fuels and Chemicals. ABAB Symposium. Humana Press. https://doi.org/10.1007/978-1-59745-268-7_25
Download citation
DOI: https://doi.org/10.1007/978-1-59745-268-7_25
Publisher Name: Humana Press
Print ISBN: 978-1-58829-866-9
Online ISBN: 978-1-59745-268-7
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)