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Lignin pyrolysis products: their structures and their significance as biomarkers

AuthorsSáiz-Jiménez, Cesáreo ; Leeuw, J. W. de
KeywordsMilled wood lignins
Dehydrogenative polymers
Gymnosperm lignins
Angiosperm lignins
Grass lignins
Issue Date1986
CitationOrganic Geochemistry 10(4–6): 869–876 (1986)
AbstractPyrolysis in combination with gas chromatography and mass spectormetry was used to characterize softwood, hardwood and grass lignins as well as the corresponding synthetic dehydro-polymers. The method permitted differentiation of the three types of lignins. Softwood lignins yielded exclusively guaiacyl derivatives, coniferaldehyde and coniferyl alcohol being major compounds. Hardwood lignins gave rise to guaiacyl and syringyl derivatives, among which syringaldehyde, coniferyl alcohol and sinapyl alcohol were the most prominent. Grass lignins, represented by bamboo lignin, yielded p-vinylphenol as major compound. In addition, other guaiacyl and syringyl pyrolysis products were identified. The results indicate that guaiacyl and syringyl compounds are unique pyrolysis products of lignins and woods. Because of the relatively high resistance of lignins these pyrolysis products can be considered as characteristic biomarkers for terrestrial plant input.
Description8 pages, 8 figures, 1 table, 20 references.
Publisher version (URL)http://dx.doi.org/10.1016/S0146-6380(86)80024-9
Appears in Collections:(IRNAS) Artículos
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