The present paper examines the chemical composition and antioxidant capacity of free volatile aglycones from basil compared to their essential oil. The comparison of chemical composition of volatile aglycones with the chemical composition of essential oil reveals four common compounds: eugenol, chavicol, linalool and a-terpineol. For the evaluation of the mentioned antioxidant capacities, two d...

Purpose: To determine the effects of temperature, pressure and extraction time on oil yield obtained from Polygonatum odoratum as well as the optimum processing conditions for supercritical carbon dioxide (CO2) extraction. Methods: Supercritical CO2 extraction technology was adopted in this experiment to study the process of extraction of volatile oil from Polygonatum odoratum while gas chromat...

Oliveria decumbens is an aromatic plant traditionally used for treatment of infections and gastrointestinal diseases. In the present study, the volatile oil of the plant was obtained by hydrodistillation and analyzed by GC-MS. In addition, antibacterial and anti-Helicobacter pylori activities of this essential oil were determined using disc diffusion and agar dilution methods, respectively. Ins...

Oliveria decumbens is an aromatic plant traditionally used for treatment of infections and gastrointestinal diseases. In the present study, the volatile oil of the plant was obtained by hydrodistillation and analyzed by GC-MS. In addition, antibacterial and anti-Helicobacter pylori activities of this essential oil were determined using disc diffusion and agar dilution methods, respectively. Ins...

The objective of this study was to obtain vapor pressure and heat of vaporization values of the less volatile heavy end of the Kukersite oil shale primary pyrolysis oil and therefore to have a quantitative insight into the vaporization ability of the oil during the pyrolysis process. The shale oil was produced via rapid pyrolysis in a laboratory scale reactor and collected in a solvent filled c...

BACKGROUND Herbal medicines formulated as oils were believed to possess more powerful effects than their original plants in Iranian Traditional Medicine (ITM). One of the popular oils suggested for treatment of various indications was ginger oil. In the present study, to suggest a more convenient method of oil preparation (compared to the traditional method), ginger oil has been prepared accord...

The essential oil extracted from the epicarp of Citrus sinensis exhibited absolute fungitoxicity against soybean’s fungus as Alternaria alternate, Aspergillus niger, Cercospora kikuchii, Chaetomium spp., Cladosporium cladosporioides, Curvularia lunata, Fusarium roseum, Macrophomina phaseolina, Penicillium italicum, Phomopsisspp. Rhizoctonia solani, and Sclerotium rolfsii. It is very difficult t...

The essential oil of Stachys lavandulifolia Vahl (Lamiaceae) was isolated by hydrodistillation of the aerial parts of the plant, with a yield of 0.25%. The chemical composition of volatile oil was analyzed by capillary GC and GC/ MS. The main components were germacrene-D (13.2%), ?-phellandrene (12.7%), ?-pinene (10.2%), myrcene (9.4%), ?-pinene (8.4%) and Z-?-ocimene (5.8%).

A comparison between heavily and lightly browsed Scots pine (Pinus sylvestris) trees revealed that the yield of volatile leaf oil and tree height were highly significantly different. Higher volatile oil yield was positively correlated with lightly browsed trees, and lower oil yield correlated with heavily browsed trees. Tree height was negatively correlated with terpenoid yield, indicating youn...

the essential oil extracted from the epicarp of citrus sinensis exhibited absolute fungitoxicity against soybean’s fungus as alternaria alternate, aspergillus niger, cercospora kikuchii, chaetomium spp., cladosporium cladosporioides, curvularia lunata, fusarium roseum, macrophomina phaseolina, penicillium italicum, phomopsisspp. rhizoctonia solani, and sclerotium rolfsii. it is very difficult t...