Geosmin

Udskriv

Andre navne: trans-1,10-Dimethyl-trans-9-decalol. (Eng.: Geosmin)

Geosmin er en lipofil forbindelse der har en kraftig jordagtig lugt. Forbindelsen er bl.a. fundet i havejord (Buttery and Garibaldi, 1976), rødbeder (Beta vulgaris) (Parliment et al. 1977), laks (Salmo salar) (Farmer et al. 1995) og i en malleart (Ictalurus punctatus) (Lloyd and Grimm, 1999). Forbindelsen er ligeledes fundet i rød- og hvidvine med jordagtig aromafejl (Darriet. et al. 2000).

MV= 182,30 g/mol; KP= 270 ^oC; bruttoformel: C₁₂H₂₂O; log K_o/w: 3,57; CAS-nummer: 19700-21-1

Se også 2-methylisoborneol.

Geosmin

3D Struktur af geosmin

Buttery, R.G., and Garibaldi, J.A. 1976. Geosmin and methylisoborneol in garden soil. J. Agric. Food Chem. 24:1246-1247; Darriet, P., Pons, M., Lamy, S. and Dubourdieu, D. 2000. Identification and quantification of geosmin, an earthy odorant contaminating wines. J. Agric. Food Chem. 48:4835-4838; Farmer, L.J., McConnell, J.M., Hagan, T.D.J., and Harper, D.B. 1995. Flavour and off-flavour in wild and farmed atlantic salmon from locations around northern ireland. Wat. Sci. Tech. 31:259-264; Lloyd, S.W. and Grimm, C.C. 1999. analysis of 2-methylisoborneol and geosmin in catfish by microwave distillation - solid-phase microextraction. J. Agric. Food Chem. 47:164-169.; Parliment, T.H., Kolor, M.G., Maing, I.Y. 1977. Identification of the major volatile components of cooked beets. Journal of Food Science. 42:1592-1593;

BioSite 30/3,01; 14/1,12