The Myrtus nivellei Batt. and Trab. is an endemic shrub of the central Sahara, known for its respiratory anti-infective hypoglycemic properties. This work consists a physicochemical, chromatographic spectral analysis essential oils extracted from leaves harvested in region Tamanrasset southern Algeria. extractive yield 1.6 ± 0.05 (ml/100g dry plant), refractive index 1.4700 0.0005 relative dens...

Studies have shown that oxygenated compounds are important in beverage and food products. It seems that Citrus rootstocks have a profound influence on these factors. The goal of the present study is to investigate on rootstocks and these factors. Peel oil components were extracted using cold-press method and eluted using n-hexane.  All compounds analyzed using GC and GC-MS. Data were analyzed u...

Fluxes of biogenic volatile organic compounds, including isoprene, monoterpenes, and oxygenated VOCs measured above a mixed forest canopy in central Massachusetts during the 2005 and 2007 growing seasons are reported. Mixing ratios were measured using proton transfer reaction mass spectrometry (PTR-MS) and fluxes computed by the disjunct eddy covariance technique. Isoprene was by far the predom...

BACKGROUND Essential oil from Mesembryanthemum edule leaves have been used by the Eastern Cape traditional healers for the treatment of respiratory tract infections, tuberculosis, dysentery, diabetic mellitus, laryngitis and vaginal infections. The investigation of bioactive compounds in the essential oil of this plant could help to verify the efficacy of the plant in the management or treatmen...

Essential oils (EOs) extracted from Lavandula luisieri and Cymbopogon citratus were tested for their antifungal activity against ten clinical isolates of dermatophytes isolated from cases of tinea pedis. Inhibition of conidial germination and antifungal drug/EO combination assay were tested on two ATCC reference strains of Trichophyton rubrum and Trichophyton mentagrophytes. EOs were characteri...

Myrica gale is an aromatic peatland shrub that has reported traditional use as insect repellent. Different extraction methodologies were used in this study to isolate the essential oil of L., including Clevenger hydrodistillation (CH) and microwave-assisted (MAH). The oils, isolated from different plant parts (leaves, fruit branches) collected summer autumn, analysed by GC-MS volatiles tissue d...

Hop (Humulus lupulus L., Cannabaceae family) is prized for its essential oil contents, used in beer production and, more recently, in biological and pharmacological applications. In this work, a method involving headspace solid-phase microextraction and gas chromatography-mass spectrometry was developed and optimized to establish the terpenoid (monoterpenes and sesquiterpenes) metabolomic patte...

Synthetic compounds certainly exhibit good anticorrosive activity but also toxicity for humans and their environment. Because of these concerns, we turned to more environmentally friendly substances such as essential oils course other types plant extracts. These products are considered green corrosion inhibitors. In this present study, propose make a comparative study the inhibitory effect extr...

Terpenoids are characteristic constitutive and inducible defense chemicals of conifers. The biochemical regulation of terpene formation, accumulation, and release from conifer needles was studied in Norway spruce [Picea abies L. (Karst)] saplings using methyl jasmonate (MeJA) to induce defensive responses without inflicting physical damage to terpene storage structures. MeJA treatment caused a ...

As a peculiar folk medicinal plant, Acanthopanax brachypus was widely used to treat various diseases in China. At present, however, there is not a good quality standard for its quality evaluation. In this study, on the basis of the validation tests of precision, stability and repeatability, the chromatographic fingerprint of A. brachypus was established by using gas chromatography (GC)-flame io...