The volatile constituents of taheebo (the dried inner bark of Tabebuia impetiginosa Martius ex DC) were isolated by three methods: solvent-assisted flavour evaporation (SAFE); steam distillation under reduced pressure, followed by continuous liquid–liquid extraction (DRP-LLE); and high-flow dynamic headspace sampling (including closed-loop stripping) (DHS). The extracts were analysed qualitativ...

Myrothamnus flabellifolius is an important medicinal plant traditionally used in southern Africa to treat array of diseases, including diabetes mellitus. This study investigates the chemical compositions, antioxidant activity, and inhibition carbohydrate-metabolizing enzymes by essential oil from leaves (MFEO). The extracted hydrodistillation was analyzed gas chromatography – flame thermionic d...

In this research, essential oils (EOs) were extracted through steaming from aerial parts of three plants: basil (Ocinum basilicum L.), peppermint (Mentha piperita L.) and oregano (Origanum vulgare form Sibiu County, Romania. The GC-MS analysis indicated that eugenol apiol the major compounds in EO. Timol, ɣ-terpinene, p-cymene volatile oil menthol methone main components first 48 h analysis, EO...

Background & Aim: Elaeagnus angustifolia and Elaeagnus orientalis have a lot of medical utilization. In folk medicine, the fruit and flower of these plants are used as a tonic and antipyretic agent. The aim of the present study was to chemical analysis of volatile constituents of E. angustifolia and E. orientalis flowers.  Experimental: The...

A combined approach of subwindow factor analysis and spectral correlative chromatography was used to analyze the volatile components in Radix Flemingiae Macrophyllae and Flemingiae Latifolia Benth, one of its substitutes. After extraction by a water distillation method, the volatile components in Radix Flemingiae Macrophyllae and Flemingiae Latifolia Benth were detected by GC-MS. Then the quali...

The composition of essential oils and their mixtures used to formulate gin is usually too complex to separate all sample components by standard capillary gas chromatography (GC). In particular, minor constituents that possess important organoleptic properties can be masked by co-elution with major sample components. A solution is provided that combines gas chromatography/mass spectrometry (GC/M...

Background & Aim: Elaeagnus angustifolia and Elaeagnus orientalis have a lot of medical utilization. In folk medicine, the fruit and flower of these plants are used as a tonic and antipyretic agent. The aim of the present study was to chemical analysis of volatile constituents of E. angustifolia and E. orientalis flowers.  Experimental: The...

Essential oils of peppermint Mentha piperita L. (Lamiaceae), which are used in flavors, fragrances, and pharmaceuticals, were investigated for their antimicrobial properties against 21 human and plant pathogenic microorganisms. The bioactivity of the oils menthol and menthone was compared using the combination of in vitro techniques such as microdilution, agar diffusion, and bioautography. It w...

Background and objectives: Scrophularia umbrosa Dumort is used as a traditional herb in China. In this study, chemical profile, free radical suppression capability, general toxicity and cardiovascular activities of the volatile compounds from S. umbrosa were investigated. Moreover, methanol (MeOH) extract of rhizomes were analyzed to purify and identify the constituents. Methods: GC/MS was used...