Antioxidant consumption has been reported to be inversely associated with the incidence of coronary artery disease. To clarify the possible role of vitamin E and volatile oils in the prevention of atherosclerosis, the effects of these compounds on the susceptibility of low-density lipoprotein (LDL) to oxidative modification were investigated. In this study, vitamin E and seven volatile oils “an...

Gram-negative bacteria cause infections that are difficult to treat due to the emergence of multidrug resistance. This review summarizes the current status of the studies investigating the capacity of essential oils and their components to modulate antibiotic activity against Gram-negative bacteria. Synergistic interactions are particularly discussed with reference to possible mechanisms by whi...

Roots of Vetiveria zizanioides Nash (Mae Hae; Thai ecotype) planted in three different cultivation systems (normal soil, normal soil with added microbes and semi- hydroponically) were extracted using a simultaneous steam distillation and solvent extraction (SDE) apparatus. Yields of the essential oils obtained were 0.27, 0.18 and 0.06%, respectively. The separation profiles obtained by comprehe...

The oxidative stability of seven oils with different fatty acid profiles was assessed. Oxidation at 0, 2 and 4h at 180oC was monitored by measuring the absorbance of thiobarbituric acid reactive substances (TBARS) along the absorption spectrum (300600 nm), the volatile aldehydes (HS-SPME-GC-MS) and the fatty acid profile (FIDGC). TBARS absorption spectrum behavior depended on the lipid composit...

Propolis (bee glue) is a resinous hive product, collected by bees. It possesses versatile biological activity antibacterial, antiviral, fungicidal, anti­ ulcer, immunostimulating, hypotensive, cytostatic, etc. [1]. The chemical com position of propolis ap­ peared to be very complex at least 156 propolis constituents have been identified so far [2,3]. M ost im portant constituents of propolis ap...

Headspace gas chromatographic analysis of heated soybean oil was investigated as a tool to determine what effect hydrogenation and additives have on the formation of total and individual volatile components. Soybean oil was hydrogenated to varying linolenate (Ln) contents with either nickel (Ni) or copper catalysts. Oils were stabilized with citric acid (CA) or a combination of CA with tertiary...

Thymus species are popular spices and contain volatile oils as main chemical constituents. Recently, plant-derived essential oils are gaining significant attention due to their significant biological activities. Seven different thymus-derived essential oils were compared in our study. First, we focused on their chemical composition, which was followed up by testing their effects on phagocytosis...

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 affinity of low density lipoprotein (ldl) to its receptor is very important, because most of ldl-uptake pathway is done by the ldl receptor and the change in size of ldl particle and the modification in its components may affects the ldl affinity for its receptor. in this study, the effects of lipophilic agents such as vitamin e and seven volatile oils: anethol, eugenol, geraniol, limonene,...

antioxidant consumption has been reported to be inversely associated with the incidence of coronary artery disease. to clarify the possible role of vitamin e and volatile oils in the prevention of atherosclerosis, the effects of these compounds on the susceptibility of low-density lipoprotein (ldl) to oxidative modification were investigated. in this study, vitamin e and seven volatile oils “an...