Quantifying acetaldehyde in cider using a Mn(III)-substituted polyoxotungstate coated acoustic wave sensor

The flow injection analysis (FIA) methodology here reported for the first time for acetaldehyde analysis in cider, allowed to obtain results not statistically different from the ones obtained with Gas Chromatography-Flame Ionization Detection (GC-FID) (α = 0.05). Besides, the new methodology does not use expensive instrumentation and the analysis time is similar. Detection limit of this new method was 2.0 mg L−1, and quantification limit was 6.7 mg L−1, not much higher than the values of 1.4 mg L−1 and 4.6 mg L−1, respectively, of the GC-FID.