The monoterpene gamma-terpinene is a natural compound present in essential oils of a wide variety of plants, including the Eucalyptus genus, which has been reported to possess anti-inflammatory activity. The goal of this study was to evaluate the effect of gamma-terpinene on several in vivo experimental models of acute inflammation. Swiss mice were pretreated with gamma-terpinene and subjected ...

Plant-derived essential oils with monoterpenoids have been used as antifungal drugs since ancient times, but the mode of action of these natural hydrocarbons at the molecular level is not understood. In order to understand the mechanisms of toxicity of alpha-terpinene (a cyclic monoterpene), a culture of Saccharomyces cerevisiae was exposed to 0.02% alpha-terpinene for 2 h and transcript profil...

R-Terpinene is a natural product that is isolated from a variety of plant sources and is used in the pharmaceutical and perfume industries. In the atmosphere, under the influence of sunlight, R-terpinene undergoes a series of photochemical transformations and contributes to the formation of the secondary organic aerosols. In the present work, R-terpinene has been isolated in low-temperature xen...

The essential oils obtained from the aerial parts of Origanum scabrum and Origaum microphyllum, both endemic species in Greece, were analyzed by means of GC and GC-MS. Forty-eight constituents were identified, representing 98.59 and 98.66% of the oils, respectively. Carvacrol, terpinen-4-ol, linalool, sabinene, alpha-terpinene, and gamma-terpinene were found as the major components. Furthermore...

AIM The biopotential of the essential oils of the Greek aromatic plants Satureja thymbra and Satureja parnassica were investigated, together with their major components carvacrol, thymol, γ-terpinene and p-cymene. MATERIALS AND METHODS Antioxidant and cancer cell cytotoxic properties were determined using 2,2-diphenyl-1-picrylhydrazyl and sulforhodamine B assays, respectively. The antiprolife...

Studies involving the consumption,metabolism, and elimination of terpenes by small ruminants consuming terpene-laden shrubs as well as those exploring the potential for natural products as rumen modifiers could benefit from a procedure that measures terpenes in both blood and rumen fluid and that is suitable for either serum or plasma. The objective of this study was to modify an existing proce...

To quantify the emission rate of monoterpenes (MTs) from diverse natural sources, the sorbent tube (ST)-thermal desorption (TD) method was employed to conduct the collection and subsequent detection of MTs by gas chromatography. The calibration of MTs, when made by both mass spectrometric (MS) and flame ionization detector (FID), consistently exhibited high coefficient of determination values (...

Peel and leaf oils of 58 mandarin cultivars, belonging to 15 different species were obtained from fruits and leaves collected on mandarin-trees submitted to the same pedoclimatic and cultural conditions. Their chemical composition was investigated by capillary GC, GC/MS and 13C NMR and the results were submitted to a cluster analysis and a discriminant analysis. Three major chemotypes, limonene...

The fresh leaves and brine of leaves of Thymbra spicata var. spicata (KARAKIZ) were analyzed by hydrodistillation, headspace and GC/MS techniques. The main components were determined as carvacrol, p-cymene, beta-myrcene, gamma-terpinene, a-terpinene and trans-caryophyllene. The essential oil and the main compounds, carvacrol and trans-caryophyllene, have been tested against E. coli, S. epidermi...