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HPLC chromatogram of EVOO methanolic extract of cv. Peranzana recorded with DAD at 278 nm. Peak numbers: 1, 3,4-DHPEA; 2, p-HPEA; 3, vanillic acid; 4, 3,4-DHPEA-EDA; 5, p-HPEA-EDA; 6, (+)-1-acetoxypinoresinol; 7, (+)-pinoresinol; 8, 3,4-DHPEA-EA; 9, ligustroside aglycone [4′ and 5′ structures identified by Rovellini et al. (44)].
