Oil Of Artemisia Judaica Research Articles

Essential Oil of Artemisia judaica L. (ssp. Sahariensis) from Algerian Sahara: Antimicrobial Effects and Mechanisms of Action

The aim of this work was to investigate the essential oil of Artemisia judaica L. (ssp. Sahariensis) originated from south of Algeria by evaluating its antimicrobial activity as well as its mechanisms of action against bacterial and fungal microorganisms. The antimicrobial activity was evaluated against 17 microbial strains. The mechanisms of action of Artemisia judaica essential oil (AJEO) have been studied by the evaluation of the release of cellular material (260 nm), the cell viability, the activity of lipase, and the salt tolerance. The AJEO yield was 1.27 ± 0.24% (w/w). The chemical composition of AJEO was characterized by a high content of piperitone (71.1%). The most sensitive bacterium was Staphylococcus aureus with an MIC of 2.73 mg/mL. AJEO was found to be enough to kill strains tested at least 40% after thirty seconds of incubation and to induce release of cellular material. On the other hand, AJEO showed complete inhibition of lipase activity of Candida albicans cells as well as the ability of cells to form colonies on saline medium. AJEO has a powerful antimicrobial activity against different microbial organisms with different mechanisms of action. AJEO seem to be useful in pharmaceutical, food, and cosmetic application.

Adulticidal, larvicidal and biochemical properties of essential oils against Culex pipiens L

In this study, the insecticidal properties of sixteen essential oils isolated from Egyptian plants were evaluated against the fourth instar larvae and adults of Culex pipiens L. The inhibitory effects of most active essential oils on the activity of acetylcholinesterase (AChE) and adenosine triphosphatases (ATPases) were also tested. In larvicidal assay against Cx. pipiens, the oils of Artemisia monosperma, S. terebinthifolius and Origanum vulgare showed the highest insecticidal activity with LC50 values of 7.73, 8.14 and 8.40mg/l after 24h of treatment and 2.63, 3.46 and 6.74mg/l after 48h of treatment. On the contrary, the oils of Schinus molle and Rosmarinus officinalis were the less effective. The results of fumigant toxicity assay against the adults of Cx. pipiens revealed that the tested oils had remarkable toxicity based on their LC50 values which ranged between 0.06 and 12.84mg/l. The oil of Artemisia judaica was the most active with an estimated LC50 value of 0.06mg/l air after 24h of treatment, while the oil of Citrus paradisi was less active. The essential oils of A. monosperma, O. vulgare, S. terebinthifolius and C. paradisi elicited marked enzymatic inhibition towards AChE and ATPases isolated from Cx. pipiens larvae. These results indicated that the essential oils have potential for the development of natural larvicides and fumigants for Cx. pipiens control.

Chemical composition, insecticidal and biochemical effects of essential oils of different plant species from Northern Egypt on the rice weevil, Sitophilus oryzae L.

The extensive use of synthetic insecticides and fumigants for control stored-product insects has led to the development of resistance. Essential oils from aromatic plants may provide proper alternatives to currently used insect control agents. Essential oils from 20 Egyptian plants were obtained by hydrodistillation. The chemical composition of the oils was identified by gas chromatograph/mass spectrometer. Fumigant and contact toxicities of the essential oils were evaluated against Sitophilus oryzae. The inhibitory effects of the essential oils on acetylcholinesterase and adenosine triphosphatases activities were examined. The oils were composed of monoterpene hydrocarbons (i.e., limonene, sabinene, β-pinene and γ-terpinene) and oxygenated monoterpenes (i.e., terpinen-4-ol, β–thujone, 4-terpineol, α-citral and 1,8-cineole) with the exception of the oil of Schinus terebinthifolius which was contained sesquiterpenes, and the oil of Vitex agnus-castus which contained similar amounts of monoterpenes and sesquiterpenes. In the fumigation assay, the oils of Origanum vulgare (LC50 = 1.64 mg/L air), Citrus lemon (LC50 = 9.89 mg/L air), Callistemon viminals (LC50 = 16.17 mg/L air), Cupressus sempervirens (LC50 = 17.16 mg/L air), and Citrus sinensis (LC50 = 19.65 mg/L air) showed high toxicity to S. oryzae. In the contact assay, the oils of Artemisia judaica, C. viminals, and O. vulgare caused the highest toxicity to S. oryzae with LC50 values of 0.08, 0.09, and 0.11 mg/cm2, respectively. The oil of A. judaica (I50 = 16.1 mg/L) invoked the highest inhibitory effect on AChE activity, while the oils of C. viminals and O. vulgare were the most potent inhibitors to ATPases activity with I50 values of 4.69 and 6.07 mg/L, respectively. The results indicate that the essential oils of A. Judaica, O. vulgare, C. limon, C. viminals, and C. sempervirens could be applicable to the management of populations of S. oryzae.

Chemical composition of the essential oil ofArtemisia judaica L. from Algeria

The essential oil of Artemisia judaica L. growing spontaneously in In-Amenas in southern Algeria (desert region) was investigated by GC and GC–MS. Essential oil was isolated from the aerial parts by hydrodistillation in 0.70% yield. Sixty-two components were identified, amounting to 95.1% of the oil. The main components were piperitone (61.9%), terpinen-4-ol (4.6%) and bornyl acetate (3.0%). The geographical variation of the chemical composition of the volatile oil of Artemisia judaica between several sites in the world is discussed briefly. Copyright © 2005 John Wiley & Sons, Ltd.

The Essential Oil of Artemisia judaica L. from Algeria

The essential oil of Artemisia judaica L. from Algeria was analyzed by GC and GC/MS. Approximately 95% of the components were identified with piperitone (53.5%), chrysanthenone (9.8%) and cis-chrysanthenyl acetate (7.4%) being the major constituents.

The Essential Oil ofArtemisia judaicaL. from the Sinai and Negev Deserts. Aromatic Plants of the Holy Land and the Sinai, Part II

ABSTRACT Three oils of Artemisia judaica L., which is the most aromatic species in the flora of Sinai and Negev, were investigated by GC/MS. Seventy-one constituents were identified in the oils of at least two chemical varieties. Substantial quantities of piperitone (14.73–36.98%), trans-ethyl cinnamate (5.56–13.98%), camphor (5.76–11.53%), were found in each oil studied. Artemisia ketone (14.42–20.96%) was found to be a major constituent of two of the oils studied.