نتایج جستجو برای: Microwave assisted

تعداد نتایج: 176049  

Journal: :iranian journal of pharmaceutical sciences 0
shashikant r. pattan department of pharmaceutical chemistry, pravara rural college of pharmacy, loni, ahemednager, india. prajact kekare department of pharmaceutical chemistry, k. l. e's college of pharmacy belgum, india ashwini patil department of pharmaceutical chemistry, y. b. chavan college of pharmacy aurangabad, india ana nikalje department of pharmaceutical chemistry, y. b. chavan college of pharmacy aurangabad, india bs kittur department of pharmaceutical chemistry, h s k college of pharmacy bagalkot, india

a new series of thiazolidinedione derivatives were synthesized. the structures of these compounds were established by means of ir, 1h-nmr and elemental analysis. all of the compounds were screened for antidiabetic activity on albino rats. most of the compounds showed significant antidiabetic activity when compared with the standard drug glibenclamide.

Reusable silica supported perchloric acid and potassium bisulphate have been prepared and explored as green catalysts for thiocyanation of aromatic compounds under conventional and solvent free microwave assisted conditions. The microwave assisted protocol exhibited remarkable rate accelerations and offered selective thiocyanation of aromatic and hetero aromatic compounds in good yields. Reacti...

Journal: :international journal of nanoscience and nanotechnology 2013
p. boroojerdian

sno nanoparticles were synthesized using microwave–assisted hydrothermal method. it was noticed that at 300 and 600 watt microwave power, sno formed and remained in the tetragonal phase. at 900 watt, sno2 started appearing and a mixture of sno and sno2 phases coexisted. the particle size varied from ~2 to ~13 nm at 300 to 900 watt radiation power. the uv-v absorption spectra showed the excitoni...

Journal: :international journal of advanced biological and biomedical research 2013
mehran moradalizadeh naghmeh samadi peyman rajaei

the genus haplophyllum, which belongs to the rutaceae family, includes 18 species in iran. in this study, after collecting plant material, botanical identification and suitable drying, the essential oils from aerial parts of haplophyllum robustum bge. were extracted by three different isolation techniques, conventional hydrodistillation (hd), microwave-assisted hydrodistillation (mahd) and solv...

Journal: :journal of chemical health risks 0
s. mollasalehi ms student, department of agriculture, damghan branch, islamic azad university, damghan, iran b. kashefi assistant professor, department of agriculture, damghan branch, islamic azad university, damghan, iran h. hashemi-moghaddam assistant professor, department of chemistry, damghan branch, islamic azad university, damghan, iran

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...

Journal: :nanochemistry research 0
hamid reza rajabi chemistry department, yasouj university, yasouj, iran hoda deris chemistry department, yasouj university, yasouj, iran hame sadat faraji chemistry department, yasouj university, yasouj, iran

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...

A. Ghasemi Pirbalouti A. Gholami S.A. Nourbakhsh S.M. Memarzadeh*

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...

2011
Ji-hye Lee Sehwan Park Sunyoung Lee Kyu Hwan Park Hyun Sik Kim Jeongkwon Kim

The effectiveness of microwave-assisted protein digestion in different well positions of a 96-well microplate was investigated where microwave-assisted protein digestion of bovine serum albumin was performed in 10 different wells of a 96-well microplate in a microwave oven. Similarly increased sequence coverages (~70%) were generally observed for the 10 microwaveassisted protein digestion sampl...

Journal: :journal of agricultural science and technology 2010
a. rajaei m. barzegar z. hamidi m. a. sahari

phenolic compounds, especially those of plant origin, constitute an essential part of the human diet, and are of considerable interest due to their antioxidant properties. in this study, ultrasound-assisted extraction (uae), microwave-assisted extraction (mae), as well as maceration extraction (me) methods were applied for phenolic compounds’ extraction from pistachio green hull. response surfa...

Journal: :Journal of chromatography. A 2011
Chung-Hung Chan Rozita Yusoff Gek-Cheng Ngoh Fabian Wai-Lee Kung

Microwave-assisted extraction (MAE) is widely employed in the analysis and the extraction of active compounds from plants. This review summarizes the research done during the last decade on the MAE of active ingredients from plants. Advances and modifications to improve the performance of MAE are presented and discussed in detail. Modified MAE such as vacuum microwave-assisted extraction (VMAE)...

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