Volume 40 - Issue 2 - 155 - 163

Determination of Ochratoxin A in Grape Wines after Dispersive Liquid–Liquid Microextraction Using High Performance Thin Layer and Liquid Chromatography– Fluorescence Detection

Türk Üzüm Şaraplarındaki Okratoksin A’ Nın Dispersif Sıvı-Sıvı Mikroekstraksiyonu Sonrası Yüksek Performanslı İnce Tabaka ve Sıvı Kromatografisi- Floresans Yöntemiyle Tayini

In this study, a method was developed for analyzing ochratoxin A in wines using dispersive liquid–liquid microextraction combined with thin layer and liquid chromatography. Parameters such as type and volume of extraction solvent and dispersive solvent, extraction time and effect of salt were optimized to obtain the best extraction result. The linearity of response was employed in the concentration range of ochratoxin A in wines from 0.03-1.00 μg L-1. Under the optimum conditions, the extraction recovery as 63.9% and the enrichment factor as 34.5 were established. 

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