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Chemical characterization of ethanolic extract from Origanum vulgare ssp. vulgare. (a) TLC plate with ethyl acetate:methanol:water (65:15:5, v/v/v) as mobile phase, and NP reagent; (b) TLC plate with ethyl acetate:glacial acetic acid:formic acid:water (100:11:11:26, v/v/v/v) as mobile phase, and NP reagent; (c) HPLC profile at 325 nm; (d) Quantification main groups of compounds expressed as percentage (%).
