Elimination kinetics of eugenol in grass carp in a simulated transportation setting

• Published in: BMC veterinary research Vol. 13; no. 1; p. 346
• Main Authors: Zhao, Dong-Hao, Ke, Chang-Liang, Liu, Qi, Wang, Xu-Feng, Wang, Qiang, Li, Liu-Dong
• Format: Journal Article
• Language: English
• Published: England BioMed Central Ltd 21.11.2017; BioMed Central; BMC
• Subjects: Analysis; Anesthetic; Carps; Clove oil; Ctenopharyngodon idella; Drug elimination; Fishes; Food safety; Food safety risk; Liquid chromatography; Liver; Phenols (Class of compounds); Transportation industry; Clove oil; Ctenopharyngodon idella; Drug elimination; Anesthetic; Food safety risk
• ISSN: 1746-6148; 1746-6148
• DOI: 10.1186/s12917-017-1273-3

Fish are vulnerable to stress from over-crowding during transportation and eugenol is the most common sedative used to minimize fish injury. The ADI value of 2.5 mg/kg is recommended by the Joint FAO/WHO Expert Committee on Food Additives. The aim of this work was to study the elimination kinetics of eugenol following exposure of grass carp to a eugenol bath in a simulated transportation setting. Grass carp, Ctenopharyngodon idella (120 fish) were exposed for 24 h to a 10 mg/L eugenol bath. Sampling was performed during a 96 h period after the 24 h bath. Eight fish were sampled at each time point and muscle, plasma and liver concentrations of the drug were determined by ultra-performance liquid chromatography-tandem mass spectrometry. The concentration-time data of eugenol in each tissue were analyzed using non-compartmental methods. The peak concentrations (C ) in plasma, muscle and liver were 7.68, 5.30 and 24.63 mg/kg and the elimination half-lives (t ) were 19.79, 10.27 and 55.28 h, respectively. The clearance (CL) values were 0.10, 0.44 and 0.04 L/h/kg and the areas under the concentration-time curve (AUC ) were 91.54, 22.44, and 214.12 mg·h/L in plasma, muscle and liver, respectively. After a eugenol exposure bath, drug concentrations in muscle tissue of grass carp were below 1 mg/kg at 8 h and 0.1 mg/kg at 24 h. The drug concentrations in muscle tissue at 8 h were lower than the recommended ADI value.