Chemical composition and antioxidant activity of essential oil, various organic extracts of Cistus ladanifer and Cistus libanotis growing in Eastern Morocco

  In the present work, we studied the chemical composition of the essential oil of Cistus ladanifer and  Cistus libanotis  growing in Eastern Morocco. The essential oils were obtained by hydrodistillation and  their chemical composition was analysed using gas chromatography- mass spectrometry (GC–MS).  Camphene, borneol, cyclohexanol-2, 2, 6 tremethyl, terpineol-4 and α-pinene were the main constituents  of the essential oil of C. ladanifer, while in the essential oil of C. libanotis we obtained terpineol-4, γ- terpinene, camphene, sabinene, α-terpinene and α-pinene. The antioxidant potential of various extracts  (water, ethanol, ethanol: water (50:50), methanol, methanol: water (50:50), acetonitrile)  and essential  oils of C. ladanifer and C. libanotis  were carried out by the method of 1,1-diphenyl-1-picrylhydrazylhydrate (DPPH) free radical scavenging. Total phenolic…