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U. rigida (Ghar El Melh) crude extracts purification steps. CCS: column chromatography silica gel; n-Hex: n-hexane; EtOAc: ethyl acetate; DCM: dichloromethane; MeOH: methanol; TLCa: analytic thin layer chromatography; GC: gaz chromatography; 1H NMR: nuclear magnetic resonance of proton; RMN13C: nuclear magnetic resonance of carbon; (+): active against at least one indicator microorganisms.
