Ricerc@Sapienza

Many analytical methods for polyphenol determination in food and beverages can be found in the literature, but most
of them need time-consuming sample pretreatment. Conversely, methods are missing for a rapid screening of non-pre-treated
samples, with useful application in the agri-food industry, from process control to fraud. Selected ion recording mass mode after
liquid chromatographic separation was used for the detection and quantification of free polyphenols in three craft beers, after just

An HS-SPME/GC–MS (Head Space-Solid Phase Micro Extraction/Gas Chromatography-Mass Spectrometry) method was developed and applied to 79 beers (craft and industrial products) selected among the most common brands of mass-produced beer to evaluate their flavour profile. 111 volatiles were identified in the samples. PLS-DA (Partial Least Squares-Discriminant Analysis) was used to classify beers according to their different production methods.