نتایج جستجو برای: steam distillation
تعداد نتایج: 27317 فیلتر نتایج به سال:
The essential oils are frequently used in food processing industry, perfumery, cosmetics and pharmaceuticals. Most of the oils obtained by steam distillation and water distillation. It is necessary to specify the best conditions of essential oils production to get much more major compound(s) and higher yield oil. So, fennel oil was selected in this study. The objective of this work was to ident...
The determination of the alcoholic strength in spirits and liqueurs is required to control the labelling of alcoholic beverages. The reference methodology prescribes a distillation step followed by densimetric measurement. The classic distillation using a Vigreux rectifying column and a West condenser is time consuming and error-prone, especially for liqueurs that may have problems with entrain...
tanacetum parthenium l. known as feverfew is a medicinal herb which is found in many old gardens. it has been used in folk medicine for reducing fever. feverfew is a member of the daisy family; it is used primarily to prevent migraine headaches and to treat rheumatoid arthritis.it hasa colorless essential oil that contains one or more of the sesquiterpene lactones as active principle. tanasetum...
Tanacetum parthenium L. known as feverfew is a medicinal herb which is found in many old gardens. It has been used in folk medicine for reducing fever. Feverfew is a member of the daisy family; it is used primarily to prevent migraine headaches and to treat rheumatoid arthritis.It hasa colorless essential oil that contains one or more of the sesquiterpene lactones as active principle. Tanasetum...
The use of natural products as medicinal agents presumably predates the earliest recorded history. Ocimum sanctum L., is a plant which is used in several traditional medicine systems to cure various diseases. In this study aerial parts of Ocimum sanctum were collected on august 2014 from Shahr-e-Rey in Iran. Fresh and dry partsof plants essential oils were extracted with hydro-distillation and ...
Forensic scientists use various techniques to separate accelerants from fire debris samples before instrumental identification of added fuels. Among the choices available, traditional micro-distillation, steam distillation, vacuum distillation, headspace, heated headspace, and several vapor adsorption/desorption methods provide various advantages and disadvantages. This communication reviews th...
the genus ocimum l. belonging to family of lamiaceae is widely distributed in iran, ocimum sanctum l. is described in many medicinal properties and a wide therapeutic range. it is used specially in the management of cough, ashtma, fever and common cold. in this research, samples were collected from shahr-e-rey, on august 2013, then essential oils were extracted by hydro-distillation and steam ...
background: thymus daenensis is on e of the endemic aromatic species in iran that its essential oil is used in food and pharmaceutical industries. objective: in this study, the effects of plant growth stages and distillation methods on essential oil content and thymol percentage of this species were evaluated. methods: the aerial parts of th. daenensis were collected in three stages of plant gr...
The genus Tanacetum L. belongs to the Asteraceae family and Anthemideae tribe is one of the most important medicinal plants that contains 26 species in Iran, 12 of them are endemic. This paper reports the essential oil composition of Tanacetum uniflorum (Fisch. & C.A. Mey. ex DC.) Sch.Bip. growing spontaneously in Salmas (North-West of Iran). Essentail oil extracted by water distillation and st...
the genus tanacetum l. belongs to the asteraceae family and anthemideae tribe is one of the most important medicinal plants that contains 26 species in iran, 12 of them are endemic. this paper reports the essential oil composition of tanacetum uniflorum (fisch. & c.a. mey. ex dc.) sch.bip. growing spontaneously in salmas (north-west of iran). essentail oil extracted by water distillation and st...
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