This article describes the various chemical components as obtained from the oils in the leaves of Cymbopogon citratus using hydrodistillation and solvent-free microwave extraction methods. Furthermore, extractions of the oils were also carried out with a slight in pH variation and compared, "GC-MS evaluation of C. citratus (DC) Stapf oil obtained using modified hydrodistillation and microwave e...

This research was undertaken to investigate the influence of extraction parameters during microwave-assisted extraction on total phenolic content, total flavonoids, total hydroxycinnamic acids and total flavonols of blackthorn flowers as well as to evaluate the antioxidant capacity by two different methods (2,2-diphenyl-1-picrylhydrazyl free radical scavenging capacity and ferric reducing antio...

microwave-assisted hydrodistillation (mahd) method has been compared with hydrodistillation (hd) conventional technique for extraction of essential oil from achillea millefolium. microwave-assisted hydrodistillation were examined at three levels of microwave powers (300, 500, and 700 w) .   obtained results show that   mahd offers important advantages over hd in terms of energy savings and extr...

in this paper, leaching of lead and cadmium was investigated from porcelain over glaze designs between different colors.  also the effect of microwave heating was considered on leaching of lead and cadmium.  dishes were selected with a decor with the dominant color of gray, red, yellow, blue, and dark blue. amounts of cadmium and lead which leached from the container by acetic acid and orange j...

The chemical composition of the essential oils was influenced by many factors including extraction methods. In this study, the effect of extraction methods; hydrodistillation, microwave assisted hydrodistillation and solvent free microwave extraction of Mentha piperita L. growing in Taif, KSA, on the yield and chemical composition of their essential oils were investigated. Furthermore, the oils...

Mangiferin, a bioactive compound having potent nutraceutical, strong antioxidant and pharmacological significance has been extracted using microwave-assisted extraction (MAE) technique from Curcuma amada, commonly known as mango ginger. The extraction solvent ethanol is eco-friendly, nontoxic and reduces the risk of environmental hazards. The influence of several independent variables such as m...

Background and objectives: Bakhtiari savory belonging to the Lamiaceae family is an endemic species, which is rich in carvacrol, thymol and other aromatic compounds. The essential oil of the plant could be added in fatty food against radicals similar to synthetic antioxidant BHT. Methods: To determine the best extraction methods on qualitative and antioxidant c...

seaweeds are the novel bioactive compounds resources with antioxidant activity. the aim of this study was to evaluate the efficacy of microwave radiation on antioxidant compounds extracted from red algae hypneahamulosa and optimal extraction conditions using response surface methodology (rsm).. independent variables were time (4,8,12 min), acetone/water concentration (50%,75% ,100% acetone) and...

A balanced optical-microwave phase detector for the extraction of low-jitter, high-power, and drift-free microwave signals from optical pulse trains is presented. The phase detection is based on electro-optic sampling with a differentially biased Sagnac loop. Because the timing information is transferred in the optical domain, the regenerated microwave signal is robust against drifts and photod...

in the present study, a simple, efficient and fast synthetic strategy was reported for the green biosynthesis of silver nanostructures (i.e. nanoroads and nanoparticles) by the extract of suaeda acuminata plant, without any catalyst, template or surfactant. aqueous extracts were obtained by maceration and microwave assisted extraction (mae) methods. in mae procedure, the effect of microwave pow...