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Enzymatic synthesis of polyphenols from highly phenolic lignin-based polymers (lignophenols)
Zuyong Xia1, Takashi Yoshida, Masamitsu Funaoka
1Polymer Science Department, Hokkaido University, Kita-ku, Sapporo 060-0180, Japan.
Biotechnology Letters
|July 29, 2003
Abstract:
Peroxidase-catalyzed polymerization of lignin-based macromonomers (lignophenols), lignocatechol and lignocresol, prepared by phenolation of lignin with catechol or p-cresol, was carried out in aqueous organic solvent mixtures. The two lignophenols were polymerized to give cross-linked polymers. The highest yield of polymerization (83%, w/w) was obtained with lignocatechol, and the maximum yield for the polymerization of lignocresol was 55% (w/w). Pyrolysis GC-MS analysis of polymers indicated that the polymerization of lignophenols involved the oxidative coupling of the introduced phenol derivatives.