Development and validation of an optical SPR biosensor assay for tiamulin in grass and groundwater
Tiamulin (TIA) is an antimicrobial veterinary drug administered subtherapeutically to prevent swine dysentery and pneumonia. Due to its stability, crystalline structure, and water-soluble properties, TIA is a prime candidate for environmental monitoring. However, there are currently no screening methods available for TIA in environmental matrices, such as grass or ground water. In this paper, the development and validation of a screening method using optical SPR biosensor technology is presented. A solvent extraction was carried out on samples prior to analysis using the Biacore Q instrument. The limit of detection for the assay in grass and ground water was 10.8 ng/g and 2.4 ng/ml, respectively. In addition, the assay was shown to be of an acceptable standard with regard to both accuracy and reproducibility.
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Document Type: Research Article
Affiliations: 1: Institute of Agri-Food and Land Use, Queens University Belfast, Belfast, UK 2: Agri-Food and Biosciences Institute, Belfast, UK
Publication date: September 1, 2007