COMPOSITION, ANTIBACTERIAL AND ANTIOXIDANT ACTIVITIES OF ARTEMISIA HERBA-ALBA ESSENTIAL OILS FROM ALGERIA
Keywords:Artemisia herba-alba, essential oils, microwave distillation, antibacterial activity, antioxidant activity.
AbstractThe essential oils of three individual plants of Artemisia herba-alba, growing wild in tree different locations from Bordj Bou ArrÃ©rridj in East Algeria has been extracted by hydrodistillation and a microwave distillation process. The main components were Î±-thujone (35.1 and 31.2% in HD and MD oils, respectively) for DraÃ¢ Ech, davanone (39.6-37.3%) and 1, 8-cineole (9.2-7.8%) for Bordj GhÃ©dir, chrysanthenone (29.6-43.8%), camphor (18.6-16.0%), and Î±-thujone (15.9-8.6%) for Bordj Bou ArrÃ©rridj. In comparison with HD, MD allows to obtain oil in a very short time, with the comparable qualities and substantial saving of energy. The minimum inhibitory concentration of various essential oils shows a power inhibitor not exceeding 10 Âµg/mL against all microbial strains. The three chemotypes were slightly active, and the weak DPPH radical scavenging activity of these oils could be attributed to the absence of some phenolic components.
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