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Báo cáo khoa học: Cleavage of nonphenolic b-1 diarylpropane lignin model dimers by manganese peroxidase from Phanerochaete chrysosporium Evidence for a hydrogen abstraction mechanism

Chia sẻ: Nguyen Thang | Ngày: | Loại File: PDF | Số trang:9

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Purified manganese peroxidase (MnP) fromPhanerocha-ete chrysosporiumoxidizes nonphenolicb-1 diarylpropane lignin model compounds in the presence of Tween 80,and in three- to fourfold lower yield in its absence. In thepresence of Tween 80,1-(3¢,4¢-diethoxyphenyl)-1-hydroxy-2-(4¢-methoxyphenyl)propane (I) was oxidized to 3,4-diethoxy-benzaldehyde (II),4-methoxyacetophenone (III) and 1-(3¢,4¢-diethoxyphenyl)-1-oxo-2-(4¢-methoxyphenyl)pro-pane (IV),while only 3,4-diethoxybenzaldehyde (II) and 4-methoxyacetophenone (III) were detected when the reac-tion was conducted in the absence of Tween 80....

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Nội dung Text: Báo cáo khoa học: Cleavage of nonphenolic b-1 diarylpropane lignin model dimers by manganese peroxidase from Phanerochaete chrysosporium Evidence for a hydrogen abstraction mechanism

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