A list of 22 different polyphenolic standards was tested to be quantified in all the samples using HPLC-PDA analysis as reported previously. The analysis was performed on a Waters liquid chromatograph equipped with a model 600 solvent pump and a 2996 PDA detector, and Empower v.2 Software (Waters Spa, Milford, MA, United States) was used for the acquisition of data (Locatelli et al., 2017 (link)).
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