Contexts in source publication

Context 1
... withdrawal periods have been defined which depend on the macrocyclic lactone, the treated animal and the formulation. To protect consumer's health, the European Union requires that the use of these veterinary drugs and their withdrawal periods are evaluated and it has established maximum residue limits (MRLs) for these compounds in specific edible matrices, i.e. muscle, fat, kidney, liver and milk (Table 1). The metabolisation of macrocyclic lactones in animal tissues is well investigated. ...
Context 2
... in-house method validation: macrocyclic lactones in porcine liver Maximum residue level For porcine liver, a maximum residue level (MRL) of 50 and 100 mg kg À1 is set for doramectin and ivermec- tin, respectively (Table 1). For all other macrocyclic Table 2. Precursor and product ions (m/z), isolation width and collision energy for the macrocyclic lactones considered (internal standard is in italics; most abundant product ion is underlined). ...
Context 3
... the validation of bovine meat, six tissue samples were fortified with the MRL concentration of dor- amectin (10 mg kg À1 ), eprinomectin (50 mg kg À1 ) and moxidectin (50 mg kg À1 ) (see also Table 1). All other targeted macrocyclic lactones were considered as forbidden and were added at 10 mg kg À1 . ...