نتایج جستجو برای: microwave extraction
تعداد نتایج: 214433 فیلتر نتایج به سال:
Solid coconut waste (SCW) is a by-product of milk production which still contains virgin oil (VCO). This usually thrown away or left in fields. study aims to optimize the effects Microwave power (80–400 W), irradiation time (1–4 minutes), and solvent feed ratio (SF) (10–30 ml/g) on extraction VCO from SCW using microwave-assisted extraction. The optimized conditions were microwave power: 160 W,...
in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...
Introduction: Marjoram (Origanom majorana L), a plant which belongs to lamiaceae family, is used in medicine and food industry for its high antioxidant compounds. Since antioxidant activity of plants is affected by extraction method, this study aimed to optimize the extraction method of these compounds from different tissues of majoram (leaf and flower) in vegetative and flowering stages. Metho...
BACKGROUND The present work was designed to appraise how different extraction solvents and techniques affect the extractability of antioxidant and antimicrobial components from Lantana camara (L. camard) flowers. MATERIAL AND METHODS Four extraction solvents including 100% methanol, 80% methanol, 100% ethanol and 80% ethanol coupled with three extraction techniques namely stirring, microwave-...
We extensively investigated the effects of the temperature on the DC behaviour, the small signal and the noise performance at microwave frequencies of pseudomorphic HEMTs. The measured data were then employed to extract temperature dependent models by means of several extraction techniques. The relevant experimental data show that the most important electrical parameters, such as the output cur...
A method of microwave-assisted extraction coupled with high-speed counter-current chromatography was established for separation and purification of isopimpinellin, pimpinellin and phellopterin from Toddalia asiatica (L.) Lam. The conditions of MAE including the extraction solvent, size of sample, solid/liquid ratio, extraction temperature and extraction time were optimized by a mono-factor test...
The use of microwave heating for preparation in organic synthesis has been accepted as an effective technique in synthesis due to the significant advantages over the conventional method. In the present work, microwave heating was applied to the preparation of atrazine (template molecule) magnetic molecularly imprinted polymer (mag-MIP) beads by suspension polymerization. The term of the polymer...
chaetomorpha sp is one of the persian gulf green algae which can be a marine source of natural antioxidants such as polyphenols. industrial and economic development of these materials is influenced by effective extraction and application methods. microwave-assisted extraction (mae) and ultrasound-assisted extraction (uae) are novel techniques which have a potential to apply in laboratory with a...
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