نتایج جستجو برای: microwave assisted hydrodistillation mahd

تعداد نتایج: 176918  

2014
Junaid Akhtar Chee Loong Teo Long Wee Lai Nursia Hassan Ani Idris

Microwave-assisted dilute acid/alkali pretreatment is an efficient and rapid method of removing lignin and hemicellulose, however, the optimized parameters for the maximum efficiency have to date not been presented in the literature. The purpose of this study was to determine those conditions by examining the effects of three factors: microwave power, temperature, and time on delignification in...

2015
Gyudo Lee Wonseok Lee Hyungbeen Lee Chang Young Lee Kilho Eom Taeyun Kwon

Amyloid fibrils are a hallmark of neurodegenerative diseases and exhibit a conformational diversity that governs their pathological functions. Despite recent findings concerning the pathological role of their conformational diversity, the way in which the heterogeneous conformations of amyloid fibrils can be formed has remained elusive. Here, we show that microwave-assisted chemistry affects th...

2003
Bhupinder Singh Sekhon

Microwave-assisted organic synthesis is an enabling technology for accelerating drug discovery and development processes. Microwave instruments are used principally in three areas of drug research: the screening of organic drug formulae, peptide synthesis, and DNA amplification. The features of microwave-assisted organic synthesis technology include reduction of time for a chemical reaction, in...

Journal: :Analytical biochemistry 2013
Miyako Baba Kaname Ohyama Naoya Kishikawa Naotaka Kuroda

Immune complexome analysis is a method for identifying and profiling of antigens in circulating immune complexes (CICs); it involves separation of immune complexes from serum, direct tryptic digestion of these complexes, and protein analysis via nano-liquid chromatography-tandem mass spectrometry (nano-LC-MS/MS). To improve this method, we initially investigated the effects of two factors-the g...

This paper focused on a simple approach for synthesis of molybdenum oxide (MoO3) nanoparticles and reports a facile route for synthesis of such nanoparticles, using microwave irradiation as a homogenous and powerful source of heating, using ethylene glycol as the solvent and heating medium. For more investigations, besides microwave heating, the obtained solutions were also treated by conventio...

Quercetin is a biological flavonoid, which can be found in red kidney bean at high concentration. In this study, a comparison was conducted between traditional and modern extraction methods. Sequential microwave-assisted extraction was used for isolation of quercetin from red kidney bean. The effect of several factors such as particle size of grinded kidney bean, extraction solvent, microwave p...

Journal: :Dalton transactions 2015
Marco Taddei Phuong V Dau Seth M Cohen Marco Ranocchiari Jeroen A van Bokhoven Ferdinando Costantino Stefano Sabatini Riccardo Vivani

A highly efficient and scalable microwave assisted synthesis of zirconium-based metal-organic framework UiO-66 was developed. In order to identify the best conditions for optimizing the process, a wide range of parameters was investigated. The efficiency of the process was evaluated with the aid of four quantitative indicators. The properties of the materials prepared by microwave irradiation w...

Journal: :The Journal of organic chemistry 2005
Ji-Feng Liu Mira Kaselj Yuko Isome Jennifer Chapnick Bailin Zhang Grace Bi Daniel Yohannes Libing Yu Carmen M Baldino

[reactions: see text] One-pot total syntheses of the quinazolinobenzodiazepine alkaloids sclerotigenin (1), (+/-)-circumdatin F (2), and (+/-)-asperlicin C (3) via novel microwave-assisted domino reactions were achieved in 55%, 32%, and 20% yields, respectively, from commercially available starting materials. A two-step total synthesis of (+/-)-benzomalvin A (4) was accomplished with an overall...

2010
B. N. Shah A. K. Seth B. S. Nayak Biren N. Shah

Objective: A microwave assisted extraction technique was developed to optimize the extraction of mucilage from the fruits of Trichosenthes dioica plant. Materials and Methods: the plant has been extracted by conventional and microwave assisted methods for the isolation of mucilage. Results and Discussion: Microwave extraction at 320 W intensity and 20 min heating duration, 84.92% increase in th...

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