2.3.4. Analysis of Phenolic Acids by HPLC-DAD (High Pressure Liquid Chromatography Coupled with Diode Array Detector)

The sample preparation, parameters of chromatographic separation and integration as well as validation procedure was given earlier by Kosakowska et al. [41]. The content of rosmarinic acid was calculated in mg <sup>×</sup> 100 g−<sup>1</sup> DW.
