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n-Alkane oxidation in soil. Formation of internal monoalkenes

1994; Elsevier BV; Volume: 64; Issue: 1-2 Linguagem: Inglês

10.1016/0016-7061(94)90092-2

1872-6259

André Amblès, E. Parlanti, P. Jambu, Pierre Mayoungou, Jean‐Claude Jacquesy,

Atmospheric and Environmental Gas Dynamics

The biodegradation of pure eicosane (nC20) in rendzina soil samples was studied in a laboratory experiment at 20°C. After 8 weeks, 25% of eicosane was mineralized. Terminal oxidation led to C20:0 acid, with eicosan-1-ol as probable intermediate. An interesting dehydrogenation process occurred, leading to eicos-9-ene which was oxidized into eicos-9-enoic and eicos-11-enoic acids. This process was also observed with C19 and C22 hydrocarbons. Hydrolysis of the complex lipid fraction demonstrated the incorporation of eicosane-derived molecules in this fraction.