نتایج جستجو برای: distillation using a clevenger
تعداد نتایج: 14087660 فیلتر نتایج به سال:
BACKGROUND The plants belonging to the Ocimum genus of the Lamiaceae family are considered to be a rich source of essential oils which have expressed biological activity and use in different area of human activity. There is a great variety of chemotypes within the same basil species. Essential oils from three different cultivars of basil, O. basilicum var. purpureum, O. basilicum var. thyrsiflo...
the main purpose of this research was to:1.develop a coking model for thermal cracking of naphtha.2.study coke inhibition methods using different coke inhibitors.developing a coking model in naphtha cracking reactors requires a suitable model of the thermal cracking reactor based on a reliable kinetic model.to obtain reliable results all these models shall be solved simultaneously.for this pu...
Background and Objectives: Nowadays, use of essential oils in food preservation is popular by researchers not only as antimicrobial agents but also as replacements for synthetic harmful preservatives. Objectives of this study were extraction and identification of Anise essential oil (AEO) compounds as well as assessment of the oil antimicrobial properties on four Gram-negative and Gram-positive...
State distillation is the process of taking a number of imperfect copies of a particular quantum state and producing fewer better copies. Until recently, the lowest overhead method of distilling states produced a single improved [formula: see text] state given 15 input copies. New block code state distillation methods can produce k improved [formula: see text] states given 3k + 8 input copies, ...
the genus boswellia is one of the 17 genera belonging to burseraceae family. in this study resin of boswellia carteri birdwoodcollected or purchased from tehram herbal market as a food and non-food for chemical analysis. the essential oils of the resins of boswellia carteri birdwoodobtained by different methods of distillation (water distillation, steam distillation and hydro-steam distillation...
Objective: To evaluate lipoxygenase inhibitory, antioxidant, and antimicrobial activities of selected essential oils. Materials and Methods: Essential oils were obtained by hydro distillation using a Clevenger-type apparatus and oils composition was analyzed by gas chromatography-mass spectrometry. Lipoxygenase inhibitory activity of essential oils was evaluated by lipoxygenase inhibition assay...
To analyze the performance of the separation process, we have introduced the thermodynamic concept of exergy through the exergetic efficiency of the column. The simulation results show that the exergetic output is relatively low and that the produced irreversibility fluxes are distributed throughout the whole column in a non-uniform manner. They are particularly significant in the condenser, bo...
Background & Aim: Achillea (Fam. Asteraceae) is a medicinal plant and different species of it have several uses in the folk medicine all around the world. Achillea species are used for feverish conditions, common cold, digestive complaints, slow healing wounds and skin inflammations. This study aims to investigate the essential oil composition and antioxidant activities from t...
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