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Determination of the exposure parameters that maximize the concentrations of the anesthetic/sedative, eugenol, in rainbow trout (Oncorhynchus mykiss) skin-on fillet tissue

Meinertz, J.R., Porcher, S.T., Smerud, J.R. and Gaikowski, M.P., 2014, Determination of the exposure parameters that maximize the concentrations of the anesthetic/sedative, eugenol, in rainbow trout (Oncorhynchus mykiss) skin-on fillet tissue.  Food Additives and Contaminants, v 31, I 9, p1522-1528. DOI:10.1080/19440049.2014.939720.

Abstract

Studies were conducted to determine the anaesthetic/sedative concentrations and durations that would maximise anaesthetic/sedative residue concentrations in rainbow trout (Oncorhynchus mykiss) skin-on fillet tissue. Rainbow trout (167–404 g) were exposed to 50 mg l−1 AQUI-S® 20E (10% active ingredient, eugenol) in 17°C freshwater for durations up to 1440 min, 100 and 250 mg l−1 AQUI-S® 20E for durations up to 240 min, and 500 and 1000 mg l−1 AQUI-S® 20E for durations up to 90 min. Fish exposed to 100 mg l−1 AQUI-S® 20E for durations of 30, 60, 120 and 240 min had the greatest eugenol concentrations in the fillet tissue, 50, 58, 54 and 62 µg g−1, respectively. All other exposure concentrations and durations resulted in significantly lower eugenol concentrations, i.e. all < 39 µg g−1.

Keywords

eugenol, fish sedative, fish anesthetic, drug residues