title: Essential Oil Variability of Tetraclinis articulata (Vahl) Mast. Parts During Its Phenological Cycle and Incidence on the Antioxidant and Antimicrobial Activities.
abstract: The impact of phenological stages (vegetative, flowering and fruiting stages) on chemical composition, antioxidant, and antimicrobial activities of Tetraclinis articulata (Vahl) Mast. parts essential oils were investigated for the first time. GC and GC/MS analyses pointed to a quantitative variability of components; terpene hydrocarbons derivatives, represented by α-pinene (16.38 ± 0.19 - 31.78 ± 0.35%) and limonene (3.41 ± 0.07 - 9.49 ± 0.14%) as major components, predominate at the vegetative stage, whereas oxygenated derivatives, represented by camphor (16.11 ± 0.23 - 26.17 ± 0.29%) and bornyl acetate (15.21 ± 0.21 - 27.33 ± 0.33%) as major components, predominate at the fruiting stage. Furthermore, our findings showed that the plant parts collected at the fruiting stage possess the highest antioxidant activity and the best antimicrobial activity against the tested microorganisms, than plant parts collected at the vegetative and flowering stages. This highlighted variability reflects the high impact of phenological cycle on chemical composition and biological activities, which led to conclude that we should select essential oils to be investigated carefully depending on phenological stage, in order to have the highest effectiveness of essential oil in terms of biological activities for human health purposes.
authors: Laboratory of Functional Organic Analysis, Department of Chemistry, Faculty of Chemistry, Houari Boumediene University of Sciences and Technology (USTHB), El Alia, BP 32, Bab Ezzouar, Algiers, 16111, Algeria.
authors: Abderrahmane
authors: A
authors: Djouahri
authors: Laboratory of Functional Organic Analysis, Department of Chemistry, Faculty of Chemistry, Houari Boumediene University of Sciences and Technology (USTHB), El Alia, BP 32, Bab Ezzouar, Algiers, 16111, Algeria.
authors: Boualem
authors: B
authors: Saka
authors: Laboratory of Functional Organic Analysis, Department of Chemistry, Faculty of Chemistry, Houari Boumediene University of Sciences and Technology (USTHB), El Alia, BP 32, Bab Ezzouar, Algiers, 16111, Algeria.|Scientific and Technical Research Center in Physico-Chemical Analyses (CRAPC), BP 248, Alger RP, 16004, Algiers, Algeria.
authors: Lynda
authors: L
authors: Boudarene
authors: Laboratory of Biology of the Microbial Systems, Department of Biology, Ecole Normale Supérieure El Bachir El Ibrahimi (E.N.S), Kouba-Alger, BP 92, Algeria.
authors: Lynda
authors: L
authors: Lamari
authors: Laboratory of Biology of the Microbial Systems, Department of Biology, Ecole Normale Supérieure El Bachir El Ibrahimi (E.N.S), Kouba-Alger, BP 92, Algeria.
authors: Nasserdine
authors: N
authors: Sabaou
authors: Laboratory of Functional Organic Analysis, Department of Chemistry, Faculty of Chemistry, Houari Boumediene University of Sciences and Technology (USTHB), El Alia, BP 32, Bab Ezzouar, Algiers, 16111, Algeria.|Scientific and Technical Research Center in Physico-Chemical Analyses (CRAPC), BP 248, Alger RP, 16004, Algiers, Algeria.
authors: Aoumeur
authors: A
authors: Baaliouamer
mesh_terms: D000890:Anti-Infective Agents / Q000737:chemistry / Q000494:pharmacology*; D000975:Antioxidants / Q000737:chemistry / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects; D001713:Biphenyl Compounds / Q000737:chemistry; D029779:Cupressaceae / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D009822:Oils, Volatile / Q000737:chemistry / Q000494:pharmacology*; D010851:Picrates / Q000737:chemistry; D010936:Plant Extracts / Q000494:pharmacology*; D018515:Plant Leaves / Q000737:chemistry*
chemical_list: D000890:Anti-Infective Agents; D000975:Antioxidants; D001713:Biphenyl Compounds; D009822:Oils, Volatile; D010851:Picrates; D010936:Plant Extracts; C004931:1,1-diphenyl-2-picrylhydrazyl
keywords: 
  Tetraclinis articulata
  ; Antimicrobial activities; Antioxidant activities; Chemical composition; Phenological stage