نتایج جستجو برای: oils volatile
تعداد نتایج: 62581 فیلتر نتایج به سال:
The present study was undertaken to investigate the chemical composition and effectiveness of the essential oil isolated from Echinophora spinosa on different bacterial and fungal species. Chemical analysis (GC/MS) showed that δ3-carene (60,86 %), α-phellandrene (7,12%), p-cymene (6,22 %), myrcene (4,82 %) and β-phellandrene (2,73 %) were dominant components in this oil. Essential oil tested sh...
Cardiovascular diseases are a leading cause of death in developed and developing countries and decrease the quality of life, which has enormous social and economic consequences for the population. Recent studies on essential oils have attracted attention and encouraged continued research of this group of natural products because of their effects on the cardiovascular system. The pharmacological...
The chemical composition of the essential oils obtained from two samples (GP1 and GP2) of Grammosciadium platycarpum Boiss. was analyzed by GC and GC-MS. The analysis of the oils resulted in the identification of twenty-two constituents. Linalool (79.0%-GP1, 81.8%-GP2) and limonene (10.0%, 5.8%) were found to be the major components, respectively. The in vitro antibacterial activities of these ...
Microwave-assisted hydrodistillation (MAHD) is an advanced hydrodistillation (HD) technique, in which a microwave oven is used in the extraction process. MAHD and HD methods have been compared and evaluated for their effectiveness in the isolation of essential oils from fresh mango (Mangifera indica L.) flowers. MAHD offers important advantages over HD in terms of energy savings and extraction ...
severe collapse; in fact I doubt whether any line of treatment would have saved this patient. My routine method is to first administer essential oils' mixture, whilst preparations are being made for the administration of saline subcutaneously. The sooner the case is seen, of course, the better the prognosis,, for by more than six hours after the onset of the attack the patient may have been ser...
In this paper, comparison of the volatile components composition in the samples obtained by hydrodistillation and solid-phase microextraction of Salvia officinalis was described. Different sample preparation techniques showed considerable differences in volatiles composition, especially with respect to sesqui- and diterpenoids. The comparison of the sage essential oil obtained by hydrodistillat...
The increased demands on the market for pharmaceutical plants from the wild put a high pressure for their future conservation and therefore they need protection. Thus, species such as Arnica montana L well known for their medicinal effects in a range of human diseases became for long time a target for being collected from the wild. Still, since 1977 the species is declared as nature monument an...
Citronella essential oil (CEO) has been reported as an excellent mosquito repellent; however, mild irritancy and rapid volatility limit its topical application. It was aimed to develop a nonirritant, stable, and consistent cream of CEO with improved residence time on skin using an industrial approach. Phase inversion temperature technique was employed to prepare the cream. It was optimized and ...
The title compound, C(16)H(22)Cl(2), a derivative of β-himachalene, was semi-synthesized from natural essential oils of Cedrus atlantica. The mol-ecule is built up from two fused six- and seven-membered rings. The six-membered ring has a perfect chair conformation, whereas the seven-membered ring displays a screw boat conformation; the dihedral angle between the rings is 46.48 (9)°.
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