Polysaccharide degradation in waterlogged oak wood from the ancient warship Vasa

被引：35

作者：

Lindfors, Eva-Lisa ^{[1
]}

Lindstrom, Mikael ^{[1
]}

Iversen, Tommy ^{[1
]}

机构：

[1] STFI Packforsk AB, SE-11486 Stockholm, Sweden

来源：

HOLZFORSCHUNG | 2008年 / 62卷 / 01期

关键词：

degradation; iron; oak wood; size exclusion chromatography (SEC); sulphur; waterlogged wood;

D O I：

10.1515/HF.2008.008

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

A rather extensive degradation of cellulose and hemicelluloses was found in waterlogged oak wood samples from the ancient warship Vasa by size exclusion chromatography with the solvent system lithium chloride/ N,N-dimethylacetamide (LiCl/DMAc). The degradation has mainly occurred after salvage of the wreck, probably as a consequence of keeping iron contaminated wood in contact with air. The most likely explanation is Fenton type of reactions degrading the wood polymers and oxidising reduced sulphur forms to sulphuric acid. An increased degradation rate of the Vasa wood can be anticipated in the future if the sulphuric acid cannot be neutralised and the oxidative reactions cannot be quenched.

引用

页码：57 / 63

页数：7

共 23 条

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