Figure 2 from: Nguyen K-NH, Nguyen N-VT, Kim KH (2021) Determination of phenolic acids and flavonoids in leaves, calyces, and fruits of Physalis angulata L. in Viet Nam. Pharmacia 68(2): 501-509. https://doi.org/10.3897/pharmacia.68.e66044

Figure 2 HPLC chromatogram of the extraction solvent (a), mixed standards solution (b), P. angulata leaves (c), calyces (d) and fruits (e). All peaks were identified based on the UV spectra theory of phenolic acids and flavonoids developed by Campos and Markham (2007). P1–P13: Phenolic acids, including P4: chlorogenic acid, P6: caffeic acid, P8: p-coumaric acid. F1–F9: Flavonoids, including F4: rutin, F9: queretin.