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Article Dans Une Revue Organic Geochemistry Année : 2000

Structure elucidation of soil macromolecular lipids by preparative pyrolysis and thermochemolysis

Résumé

The structure of macromolecular lipids from an acid anmoor soil was investigated using preparative pyrolysis and thermochemolysis. The matrix is formed by cross-linked aliphatic chains. Alkanols, triterpenoid alcohols e.g. a-amyrin, sterols, stanols can be bound to the matrix via ether or ester groups. Fatty acids can be incorporated through ester- i®cation. Dicarboxylic acids and other compounds such as hydroxyacids represent alkyl bridges between the poly- methylene chains. Various components are trapped in the macromolecular network. The two techniques give complementary results. Despite higher yields, thermochemolysis does not permit one to distinguish between methyl ester groups present in the structure and methyl ester groups formed on degradation.

Dates et versions

hal-00150849 , version 1 (31-05-2007)

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Valerie Gobé, Laurent Lemée, André Amblès. Structure elucidation of soil macromolecular lipids by preparative pyrolysis and thermochemolysis. Organic Geochemistry, 2000, 31, pp.409-419. ⟨10.1016/S0146-6380(00)00009-7⟩. ⟨hal-00150849⟩

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