Isolation and Identification of Blue-Green Algae Producing Muddy Odor Metabolites, Geosmin, and 2-Methylisoborneol, in Saline Lakes in Manitoba

1 January 1976

journal article
Published by Canadian Science Publishing in Journal of the Fisheries Research Board of Canada

Vol. 33 (1) , 25-35
https://doi.org/10.1139/f76-004

Abstract

Eleven axenic or unialgal cultures of blue-green algae, 10 producing geosmin (trans-1, 10-dimethyl-trans-9-decalol) and 1 producing 2-methylisoborneol (2-exo-hydroxy-2-methyl-bornane) were isolated from saline lakes in southwestern Manitoba. These compounds are responsible for the muddy flavor in fish and water in some lakes. Algae producing geosmin were Oscillatoria cf. prolifica (Greville) Gomont, O. tenuis Agardh, O. cf. cortiana Meneghini, O. cf. variabilis Rao, O. agardhii Gomont, O. cf. splendida Greville, O. sp., Symploca cf. muscorum (Agardh) Gomont, Lyngbya cf. aestuarii (Mertens) Liebman, and L. sp. Lyngbya cf. cryptovaginata Schkorbatov is the first alga reported to produce 2-methylisoborneol.Actinomycetes, which are known to produce these muddy flavor compounds, were not detected in these lakes.

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