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Article Dans Une Revue Journal of Environmental Science and Health, Part B Année : 2001

CHANGES IN LIPIDS AND STEROLS DURING COMPOSTING

Résumé

Pyrolysis-gas (Py-GC) chromatography was used to characterize organic [(diethyl ether (DEE) and chloroform (CHCl3)] extracts of raw and composted duck excreta enriched wood shavings from two finishing cycles (C1 and C2). Materials were collected on days 0, 8 and 23. C1 contained 1.7 % total N while C2 contained 0.9 % total N. Py-GC-MS (mass spectrometry) showed that the extracts contained n-alkanes (C12 to C32), alkenes (C12:1 to C33:1), n-fatty acids (C12 to C28), unsaturated fatty acids (C18:1 and C18:2), and sterols (chochlestene, cholestadiene, stigmastene, stigmastadiene, stigmastatriene, cholesterol, stigmastanol, stigmastanone, stigmastadienone, 17-methyl dialkylsulfanyl decahydro-1H-cyclopenta [a] phenanthrene, 17-methyl dialkylsulfanyl dodecahydro-1H-cyclopenta [a] phenanthrene, and 17-methyl-17-dialkylsulfanyl decahydro-1H-cyclopenta [a] phenanthrene). Other components identified were prystene, squalene (precursor of cholesterol), phthalic acid, diphenylpropane, diphenylbut-2-ene and 1,3,6 triphenyl hex-4-ene. Our data showed significant changes in the lipid composition of duck excreta enriched wood shavings during composting, which appeared to be related to the total N content of the system.

Domaines

Géochimie
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Dates et versions

hal-00160325 , version 1 (05-07-2007)

Identifiants

Citer

Henri Dinel, Morris Schnitzer, Théophile Paré, Laurent Lemée, André Amblès, et al.. CHANGES IN LIPIDS AND STEROLS DURING COMPOSTING. Journal of Environmental Science and Health, Part B, 2001, 36 (5), pp.651 - 665. ⟨10.1081/PFC-100106192⟩. ⟨hal-00160325⟩

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