Bioassay-guided fractionation of the ethyl acetate extract of Ruta graveolens roots yielded rutacridone epoxide with potent selective algicidal activity towards the 2-methyl-isoborneol (MIB)-producing blue-green alga Oscillatoria perornata, with relatively little effect on the green alga Selenastrum capricornutum. The diol-analog of rutacridone epoxide, gravacridondiol, which was also present i...

In Morocco, extensive use, traditional practices, and climate change have seriously impacted the productivity of aromatic medicinal plants (AMP). To mitigate these adverse effects, this study aims at evaluating potential arbuscular mycorrhizal fungi (AMF), namely Rhizophagusirregularis Funneliformis mosseae, in improving biomass, essential oils (EOs), biomolecule production Thymus satureioides,...

in the present work a modified in-tube solid phase microextraction technique followed by gas chromatography-mass spectrometry (gc-ms) has been applied for determination of water odorants. geosmin, 2-methyl isoborneol, 2-isopropyl-3-methoxy pyrazine, 2-isobutyl-3-methoxy pyrazine and 2,4,6-trichloroanisol are of the most important odorants which have been studied. in the described method, analyt...

Five chemotypes, the isoborneol-type, camphora-type, cineole-type, linalool-type and borneol-type of Cinnamomum camphora (L.) Presl have been identified at the molecular level based on the multivariate analysis of mass spectral fingerprints recorded from a total of 750 raw leaf samples (i.e., 150 leaves equally collected for each chemotype) using desorption atmospheric pressure chemical ionizat...

The co-occurrence of cyanotoxins and taste-and-odor compounds are a growing concern for drinking water treatment plants (DWTPs) suffering cyanobacteria in water resources. The dissolved and cell-bound forms of three microcystin (MC) congeners (MC-LR, MC-RR and MC-YR) and four taste-and-odor compounds (geosmin, 2-methyl isoborneol, β-cyclocitral and β-ionone) were investigated monthly from Augus...

Simple gas chromatography-mass spectrometry (GC-MS) and high-performance liquid chromatography (HPLC) methods were developed for quantifying eight volatile compounds and 10 sesquiterpenoids, respectively. GC-MS analysis was performed on an HP-5MS capillary column (30 m×0.25 mm i.d.) coated with 0.25 μm film 5% phenyl-95% methylpolysiloxane and selected ion monitoring was used for quantification...

A steam distilled volatile oil obtained from the leaves of Chrysanthemum indicum Linn. (FamilyCompositae) was analyzed by capillary GC and GC-MS. The volatile oil mainly comprises of thirty nine (39) components out of which thirty one (31) constituents comprising 82.6% of the oil were identified. The volatile oil mainly contains monoterpenes (48.1%). Isoborneol, a monoterpene, was the predomina...

Tanacetum parthenium L. known as feverfew is a medicinal herb which is found in many old gardens. It has been used in folk medicine for reducing fever. Feverfew is a member of the daisy family; it is used primarily to prevent migraine headaches and to treat rheumatoid arthritis.It hasa colorless essential oil that contains one or more of the sesquiterpene lactones as active principle. Tanasetum...