Faster, Better Sample Prep for Foodstuffs
Centrifugal evaporation has proven itself as a fast, safe and efficient sample preparation method in the analysis of foodstuffs for prohibited antibiotics.
Nitrofuran antibiotics were banned from use in the European Union (EU) in 1995 because of concerns that their residues were carcinogenic. In 2002/2003, the EU introduced a stringent testing regimen that calls for the use of highly sensitive methods to test food stuffs, principally meat, fish and shellfish, for the presence of this class of antibiotics. The Minimum Required Performance Limit (MRPL) laid down by the EU directive is 1 µg per kg for edible tissues, and is enforced on all products whether produced locally or imported into the EU. Many papers detail methods and identify metabolites and derivatives of the drugs concerned. The analytical method calls for good upstream sample preparation to eliminate the effects of the matrix, and can be manual and time consuming, particularly where evaporation is concerned. This article describes operational benefits, including workflow improvements, gained by the official food control authority of the canton of Zurich—Kantonales Labor Zurich (KLZH) —during improvement of an upstream sample preparation methodology based on Genevac’s EZ-2 Envi evaporator.
Read more: http://www.laboratoryequipment.com/articles/2014/01/faster-better-sample-prep-foodstuffs