A reversed-phase high-performance liquid chromatographic technique was used to identify and quantify the phenolic compounds. The HPLC analysis was carried out using a Dionex UltiMate 3000 chromatograph coupled to a PDA detector. Separations were carried out with a Zorbax RX C18 (4.6 mm × 250 mm, particle size 5 μm) column, operating at 30 °C with a flow rate of 1.2 mL/min and the injection volume was 5 μL. The mobile phase used was 1% acetic acid in water (A) versus methanol (B) for a total running time of 40 min, and the eluent gradient was changed as follows: solvent B started at 10% and increased immediately to 40% in 40 min. For quantification, standards for external calibration were used.