Chemical Compounds Profile, Antibacterial and Antioxidant Activities of the Essential Oil Extracted from the Artemisia herba-alba of Southern Algeria

Abstract

Extraction of essential oils from locally available plant Artemisia Herba-alba was carried out using steam-distillation method. Extracted oils were screened for their chemical composition, antibacterial and antioxidant activities in order to find new metabolite products, which are characterized by a biological activity. Thirty-three constituents, representing 97.54% of the essential oil of Artemisia herba-alba was determined by GC-MS analysis. The main compounds identified are: davanone (42.8%), camphor (15.96%) and thujone (9.63%). The antimicrobial activity of the oil was tested using the agar disc diffusion method, by determining the inhibition zone and the minimum inhibitory concentration. The results have shown a great potential of the antimicrobial activity against the tested strains with an enhanced sensitivity towards the gram-negative strains of Salmonella enteric, Klebsiella and the gram-positive strains of Listeria monocytogenes and Staphylococcus sp. in comparison with the other tested bacteria. The test's results of the essential oil's antioxidant activity, obtained with the anti-radical method 2,2-diphenyl-1-1-picrylhydrazil (DPPH) and the iron-reducing power (FRAP), were compared with those of the ascorbic acid; the usual synthetic antioxidant. The comparison have demonstrated, firstly with the DPPH method a considerable level of antioxidant activity of the essential oil (IC 50 = 17.73±0.29 µg mLG 1) but still lower than that found for the synthetic antioxidant that is the ascorbic acid while the opposite occurred with the iron reduction method, with an higher obtained value of EC 50 =12.53±0.25 µg mLG 1 , for the essential oil's antioxidant activity.

Laurus nobilis: Composition of Essential Oil and Its Biological Activities

“…Our results on the antimicrobial activity confirm that the behavior of an antimicrobial agent can be not only species-specific but also strain-specific [15,16]. The available literature reports several studies ascertaining the antibacterial activity of the essential oil of L. nobilis against different pathogens [6,17,18,19]. The Algerian laurel essential oil versus E. coli and Ps.…”

“…aeruginosa produced an inhibition halo of 13.73 mm and 10.73, respectively. The oil produced an inhibition halo of 13.03 mm when assayed versus S. aureus [19]. In our experiments, the antimicrobial activity resulted higher than that of the essential oil of L. nobilis collected in Turkey, if tested against E. coli O157:H7 [20].…”

Chemical Composition and Antimicrobial Activity of Laurus nobilis L. Essential Oils from Bulgaria

“…The laurel EO yield and composition were shown to be influenced by various factors, such as growth environment, harvest season, plant parts, extraction method, and others. The EO content (yield) of the laurel fruits varied within a large range, 0.60–4.30% [2,3,4,5,6,7,8,9,10], and the EO content of the leaves also varied widely, from 0.5 to 4.3% [2,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26].…”

“…The leaf EO was found to be rich in 1,8-cineole (30–70%), linalool (0.9–26.9%), α -terpinyl acetate (4.50–25.7%), α -pinene, β -pinene, sabinene, α -terpineol, terpineol-4, etc. [11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26]. The growing interest in natural products, such as EOs, and the inclusion of plant extracts in various cosmetic products is a prerequisite for an in-depth analysis of the chemical composition of laurel genotypes from various regions.…”

Chemical Composition, Antibacterial and Antioxidant Activities of the Essential Oil Extracted from the Mentha piperita of Southern Algeria

“…Essential oils and their components are started and continuing to have a lot of interest as a potential source of natural bioactive molecules; they are being studied for their possible use as an alternative for treatment of infectious diseases and food protection against oxidation (Bouhdid et al, 2006;Goudjil et al, 2015).…”