O. majorana shoots were investigated for their essential oil (EO) composition. Two experiments were carried out; the first on hydroponic medium in a culture chamber and the second on inert sand in a greenhouse for 20 days. Plants were cultivated for 17 days in hydroponic medium supplemented with NaCl 100 mmol L⁻¹. The results showed that the O. majorana hydroponic medium offered higher essentia...

The water-distilled essential oil from dried aerial parts of achillea tenuifolia Lam. Was analysed by GC and CG/MS. 48 Components were characterized representing 88% of the total oil. Camphor (18%), 1,8-cineole + limonene (9%) and spathulenol (7%) were the major constituents of the oil obtained in a yield of 0.23%.

Thymus capitatus extract has been considered a promise as antiviral agent against COVID‑19 viruses. We hypothesized that components may interact with key protein targets of (coronavirus 2 (SARS-CoV-2) causing severe acute respiratory syndromes. Molecular docking analysis was carried out using 31 SARS-CoV-2 protease enzyme (6LU7) and spike glycoprotein (6VSB). The compounds the best normalized s...

In our screening program for new agrochemicals from Chinese medicinal herbs, Murraya exotica was found to possess insecticidal activity against the maize weevil, Sitophilus zeamais and red flour beetle, Tribolium castaneum. The essential oil of aerial parts of M. exotica was obtained by hydrodistillation and investigated by GC and GC-MS. The main components of M. exotica essential oil were spat...

The essential oils of fifteen Eucalyptus species harvested from the Jbel Abderrahman and Korbous arboreta (North East Tunisia) were screened for their antibacterial activities by the agar disc diffusion method. Eighteen major components as identified by GC/FID and GC/MS were selected for a study of the chemical and biological activity variability. The main one was 1,8-cineole, followed by spath...

Hydrodistilled essential oil from Rhododendron anthopogonoides Maxim. (Ericaceae) aerial parts was analysed by gas chromatography-mass spectrometry (GC-MS). A total of 42 compounds, accounting for 95.48% of the total oil, were identified. The main constituents of the essential oil were benzyl acetone (34.41%), nerolidol (10.19%), 1,4-cineole (8.41%), beta-caryophyllene (5.63%), gamma-elemene (5...

The essential oil (EO) obtained by hydrodistillation from Teucrium polium L. was analyzed by gas chromatography and gas chromatography mass spectrometry (GC/MS). Antioxidant activity was evaluated through DPPH assay and Beta-carotene/linoleic acid assay. Twenty one components were identified representing (90.4%) of the EO. Main constituents of the essential oil were found as Spathulenol (15.06%...

Antioxidant capacity and essential oil composition of Hypericum thymopsis Boiss. (Hypericaceae), an endemic species, distributed in Turkey was determined. The samples three different populations were used for the analysis. activities determined by DPPH method from leaves flowers. Essential analysis performed areal parts plant gas chromatography (GC) GC/mass spectrometry (MS). α-Pinene, spathule...

Wedelia trilobata is an invasive weed of the family Asteraceae.Objective study was to find out impact essential oil on germination and seedling growth cowpea. Different concentrations oil(200, 400, 600, 800 1000ppm) were used,a controlwas kept without oil. Cowpea seeds sown in these petriplates,at end test period all parameters measured. All showed that treatment had no negative germination. Wh...

The bioactivity-guided fractionation of an active chloroform extract of Conyza albida led to the isolation of three alkenynes, deca-4,6-diyn-2-(Z)-enoic methyl ester (1), deca-4,6-diyn-2-(Z)-enoic ethyl ester (2) and deca-2,4-diene-4-hydroxy-6-yn-1,4-olide (3), and the terpenoid spathulenol (4), as the active toxic metabolites in the Artemia sp. lethality test. When tested in the KB cell cytoto...