Simultaneous determination of cork taint and Brett character responsible compounds in wine using ultrasound-assisted emulsification microextraction with solidification of floating organic drop

In this study, ultrasound-assisted emulsification microextraction combined with solidification of floating organic drop method (USAEME–SFOD) has been proposed as a novel approach for the sensitive determination of haloanisoles and volatile phenols in wines. For this purpose, the influence of the different parameters affecting the procedure (type and volume of extraction solvent, temperature, time and ionic strength) was evaluated in order to optimise the efficiency of the process. Subsequently, the linearity, detection and quantification limits, precision, recoveries and applicability to real samples were studied, obtaining excellent method performance results. Moreover, USAEME–SFOD was compared with other liquid–liquid microextraction methods such as dispersive liquid–liquid microextraction (DLLME) and ultrasound-assisted emulsification microextraction (USAEME). This comparison study proved the suitability of USAEME–SFOD as an alternative to previously reported methods for the simultaneous determination of cork taint and Brett character responsible compounds in wines.

► Haloanisoles and volatile phenosl have been analysed in wine using USAEME–SFOD. ► Optimal conditions of the process were found using experimental design methodology. ► In line with green chemistry, little volume of a low toxic solvent has been used. ► The proposed method achieves suitable detection limits, recoveries and precision. ► USAEME–SFOD method achieve LODs lower than previously reported methods.