Oxidative degradation of non‐phenolic lignin during lipid peroxidation by fungal manganese peroxidase
- 14 November 1994
- journal article
- Published by Wiley in FEBS Letters
- Vol. 354 (3) , 297-300
- https://doi.org/10.1016/0014-5793(94)01146-x
Abstract
A non‐phenolic lignin model dimer, 1‐(4‐ethoxy‐3‐methoxyphenyl)‐2‐phenoxypropane‐1,3‐diol, was oxidized by a lipid peroxidation system that consisted of a fungal manganese peroxidase, Mn(II), and unsaturated fatty acid esters. The reaction products included 1‐(4‐ethoxy‐3‐methoxyphenyl)‐1‐oxo‐2‐phenoxy‐3‐hydroxypropane and 1‐(4‐ethoxy‐3‐methoxyphenyl)‐1‐oxo‐3‐hydroxypropane, indicating that substrate oxidation occurred via benzylic hydrogen abstraction. The peroxidation system depolymerized both exhaustively methylated (non‐phenolic) and unmethylated (phenolic) synthetic lignins efficiently. It may therefore enable white‐rot fungi to accomplish the initial delignification of wood.Keywords
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