Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 533960
Title Experimental validation of geosmin uptake in rainbow trout, Oncorhynchus mykiss (Waldbaum) suggests biotransformation
Author(s) Schram, Edward; Schrama, Johan W.; Kooten, Tobias van; Kwadijk, Christiaan J.A.F.; Kampen, Harm; Kampen, Harm; Heul, Jan W. van de; Verreth, Johan A.J.; Murk, Albertinka J.
Source Aquaculture Research 49 (2018)2. - ISSN 1355-557X - p. 668 - 675.
DOI http://dx.doi.org/10.1111/are.13496
Department(s) IMARES Onderzoeksformatie
WIAS
Aquaculture and Fisheries
Publication type Refereed Article in a scientific journal
Publication year 2018
Keyword(s) bioconcentration - biotransformation - geosmin - off-flavour - rainbow trout - water-lipid partitioning
Abstract The bioconcentration of waterborne geosmin in rainbow trout, Oncorhynchus mykiss (Waldbaum) was assessed. Fifty rainbow trout with a mean (SD) weight of 226.6 (29.0) g and lipid content of 6.2 (0.6) % (w/w) were exposed to geosmin in static water for 0, 2, 4, 6, 8, 12, 24, 36, 48 and 120 hr, with one tank containing five fish for eac h exposure period. Geosmin concentrations were measured in fish tissue and water samples collected over time. With time the geosmin concentration in the fish increased and decreased in the water. However, the total absolute amount of geosmin in the system declined over time which could be explained by induction of biotransformation. This is in accordance with the decreasing lipid normalized geosmin levels in the liver compared with the liver-free carcass. Geosmin distribution within rainbow trout clearly is not exclusively governed by the lipid content of tissues. In vivo geosmin bioconcentration in rainbow trout is slower and the body burden reached is lower than the generally accepted theoretical model predicts.
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