Identification of phenolic compounds was achieved with an microTOFq-mass spectrometer (Bruker, Bremen, Germany) and by comparison of retention time and UV spectra with pure standards. The mass spectrometer was equipped with an ESI ion source operated in positive or negative modes, acquiring MS full scan and auto MS/MS data at 2.5 Hz acquisition speed and m/z 80e1300 scan range. MS source settings were as follows: dry gas temperature, 200 C; dry gas flow, 8 L/min; nebulizer gas pressure, 3 bars; capillary voltage 4500 V; CID at 60 eV. Molecular formula determinationwas carried out by combined evaluation of mass accuracy, isotopic patterns, adduct and fragment information using Smart- Formula3D (Bruker, Bremen, Germany).