Singlet oxygen degradation of lignin: a GC-MS study on the residual products of the singlet oxygen degradation of a steam exploded lignin from beech

被引：20

作者：

Bentivenga, G

Bonini, C

D'Auria, M

De Bona, A

机构：

[1] Univ Basilicata, Dipartimento Chim, I-85100 Potenza, Italy

[2] ITIS A Einstein, Potenza, Italy

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 1999年 / 128卷 / 1-3期

关键词：

singlet oxygen; GC-MS; lignin;

D O I：

10.1016/S1010-6030(99)00148-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The steam exploded lignin from beech obtained with log R(0) = 3.42 was characterized by using elemental analysis, UV, and NMR spectroscopy. The irradiation of this lignin in acetonitrile-ethanol 1 : 1 in the presence of both oxygen and Rose Bengal gave a residue that was chromatographed on silica gel and then analyzed through GC-MS. The analysis of the fractions showed the presence in the residue of small molecules deriving from lignin such as vanilline and sinapyl alcohol. Furthermore, palmitic acid and 2,5-dimethoxyhydroquinone were detected. Finally, some phenylalkanes, mainly deriving from tridecane, were detected in the last fraction deriving from the column chromatography. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：139 / 143

页数：5

共 22 条

[1] Photochemically induced solid-state degradation, condensation, and rearrangement reactions in lignin model compounds and milled wood lignin [J].