SOLID-PHASE EXTRACTION APPLIED TO THE DETERMINATION OF BIOGENIC-AMINES IN WINES BY HPLC

A method suitable for the determination of 19 biogenic amines in wine has been developed. The method involves derivatization of amines by treatment with dansyl chloride and solid-phase extraction of the derivatives. Prior to the derivatization procedure, clean-up of the wine sample with polyvinylpyrrolidone is carried out. Reversed-phase gradient elution HPLC with UV detection at 250 nm was used to determine these compounds. Some consideration was given to the effect of temperature on the separation process. Linearity of derivatization was obtained for amounts of all the biogenic amines ranging from 500 mu g.L(-1) to 20 mg.L(-1). Limits of detection (signal-to-noise ratio = 3) of the amines were similar for all the dansyl-derivatives (between 50 and 150 mu g.L(-1)). Addition of standard amines was used for the determination of amine recoveries. These were better than 85 % for ethanolamine, tryptamine, phenetylamine, putrescine, cadaverine and histamine. The overall process was succesfully applied to identify and quantify biogenic amines in white and red wines.