Background: Brucella abortus is a gram-negative facultative intracellular bacterium that can cause a highly contagious disease in sheep, goats, cattle and one-humped camels. It is responsible for one of the most important zoonosis in human. The aim of this study was to evaluate the role of Mentha piperita, Origanum majorana, Citrus lemon, Cinnamomum verum and Myristica fragrans essential volati...

Rubus parvifolius L. (Rp) is a medicinal herb that possesses antibacterial activity. In this study, we extracted the volatile oil from the leaves of Rp to assess its antibacterial activity and analyze its chemical composition. A uniform distribution design was used to optimize the extraction procedure, which yielded 0.36% (w/w) of light yellowish oil from the water extract of Rp leaves. We foun...

background: brucella abortus is a gram-negative facultative intracellular bacterium that can cause a highly contagious disease in sheep, goats, cattle and one-humped camels. it is responsible for one of the most important zoonosis in human. the aim of this study was to evaluate the role of mentha piperita, origanum majorana, citrus lemon, cinnamomum verum and myristica fragrans essential volati...

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,...

background and objectives: helichrysum oligocephalum dc. (compositae)  is an endemic plant in iran that has been recommended by iranian traditional and folk medicine practitioners for gastrointestinal complaints. the plant is rich in essential oil and in the present investigation, the volatile composition of the species has been determined. methods: the light yellow essential oil from the aeria...

background & aim: the genus tanacetum l. belongs to the family asteraceae and tribe anthemideae. according to the recent findings the number of tanacetum species in iran is 36, of which 12 are endemic. in this study the essential oil composition of tanacetum chiliophyllum var. oligocephalum was investigated for the first time.   experimental: the plant was collected during flowering stage f...

Using GC-MS the volatile composition of Jasonia glutinosa D. C., was studied by comparing two different methods for the isolation of a volatile fraction: distillation from the fresh plant in order to obtain the essential oil, and direct thermal desorption (DTD). Compared with essential oil extraction the main advantages of the DTD technique are the smaller sample amount required, and the increa...

In this study, biodiesel production from microalgal oil by microwave-assisted transesterification was carried out to investigate its efficiency. Transesterification reactions were performed by using Chlorella protothecoides oil as feedstock, methanol, and potassium hydroxide as the catalyst. Methanol:oil ratio, reaction time and catalyst:oil ratio were investigated as process parameters affecte...

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...