parametric optimization of microwave reflux extraction of
Microwave Extraction of Volatiles for Mars Science and
Numerical Analysis of Microwave Heating COMSOL* Multiphysics EM *COMSOL (COMputational SOLutions) Boston MA ) • Experiments (different frequencies) are expensive and time consuming • Microwave water (volatiles) extraction is a complex multiphysics problem • Microwave coupling to materials and heating is dependent on frequency and materials
Optimization of Microwave
A microwave-assisted extraction (MAE) method was applied to separate saponins from Sapindus mukorossi pericarps The most important factors of the six extraction parameters were selected using Plackett–Burman designs therefore the further extraction procedure was optimized using the Box–Behnken designs meanwhile the optimum processing parameters and well-pleasing saponins extraction
Optimization of Microwave‐Assisted Extraction of Bioactive
A central composite design was employed for the optimization of three MAE parameters including extraction time (X 1 min) ethanol concentration (X 2 %) and microwave power (X 3 W) for the highest yield of TPC and antioxidant activity measured by 2 2‐diphenyl‐1‐picrylhydrazyl (DPPH) 2 2'‐azino‐bis‐3‐ethylbenzothiazoline‐6
Application of orthogonal optimization and feedforward
Optimization of the microwave reflux extraction Taguchi optimization makes use of the signal-to-noise ratio (SNR) to measure the deviation of quality charac-teristics from the optimal response settings (Abdurah-man and Olalere 2016a) The SNR analysis was used to determine the optimal conditions in the extraction of spice oleoresin from white pepper
Keywords –Extraction Microwave Antioxidant Flavonoids
use of microwave is found to have significant improvement in the extraction efficiency of colorant Keywords –Extraction Microwave Antioxidant Flavonoids Terminalia catappa conventional methods I Introduction There is a growing demand for developing suitable extraction techniques for more efficient and effective extraction of
Optimization of a microwave
The optimal conditions were determined as follows: THF level of solvent volume of 15mL microwave power of 100W and extraction time of 7min Compared to the reflux method MAE showed a drastic reduction of extraction time (7min vs 3h) and solvent consumption (15mL vs 30mL) The NA in total yield was 90% using the two methods
Jundishapur Journal of Natural Pharmaceutical Products
Olalere OA Abdurahman NH Alara OR Habeeb OA Parametric optimization of microwave reflux extraction of spice oleoresin from white pepper (Piper nigrum) J Analyt Sci Technol 2017 8(1):1-8 doi: 10 1186/s40543-017-0118-9 6 Silva LV Nelson DL Drummond MFB Dufoss L Glria MBA
Microwave
Microwave-assisted extraction was used for the extraction of alantolactone and isoalantolactone from Inula helenium Effects of various experimental factors including ethanol concentration particle size microwave radiation time the ratio of material to liquid and extraction temperature on yield of alantolactone and isoalantolactone were evaluated
IEEE TRANSACTIONS ON MICROWAVE THEORY AND
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES 2 (a) (b) Fig 2: Two-finger HEMT layout with coplanar ground-signal-ground (GSG) probe pads The geometry dimensions are w 1 = 20 m w 2 = 4 m w 3 = 2 m d 1 = 10 m d 2 = 28 m d 3 = 9 m s 1 = 14 m s 2 = 2 m and s 3 = 2 m applied to a limited number of device models typically
Study on the Ultrasonic
Effect of ethanol to material on the extraction rate of isoflavones: Twenty mesh pueraria powder was added solvent respectively solvent-material ratio (10:1 15:1 20:1 25:1 30:1) other conditions according to the aforementioned method the extraction yield of the isoflavones was calculated The results is shown in Fig 3 Figure 3 shows that with the increase of solvent
Full article: Parameter study antioxidant activities
Aug 30 20182 3 Optimization of microwave reflux extraction The optimal extraction conditions was determine using a robust L 9-orthogonal design matrix called Taguchi methodology This was designed and analyzed using Minitab 17 software to determine a combination of extraction parameters that jointly optimize the extraction yield
Parametric optimization of microwave reflux extraction of
Results: The optimal extraction condition was attained at 90 min of irradiation time 300 W of microwave power 0 105 mm of particle size and 10 ml/g of molar ratio Under this condition the corresponding optimum extraction yield of
Solid
Extraction of amygdalin was performed using three different solid-to-liquid methodologies: (1) reflux extraction in ethanol at 70 to 90 C for 100 min (2) Soxhlet extraction with methanol at 65 to 70 C for 16 h and (3) an extraction in methanol at 50 to 70 C for 90 s using microwave
The optimization of microwave
The maximal solid yield was predicted to be 44 2% under conditions of 44 9% ethanol concentration 115 6 W microwave power and 5 8 min extraction time Decursin content of the extract was estimated to be maximal at 2 52% using 97 7% ethanol 90 2 W microwave power and 6 1 min extraction time
FlexiWAVE Microwave Synthesis Platform
The new Milestone flexiWAVE is a flexible microwave synthesis platform It is a common misconception that a laboratory microwave is just a microwave and that there are very few differences between systems We have incorporated in the new flexiWAVE our vision of the future our passion and our knowledge with the ultimate goal of helping chemists
Evaluation of optimization parameters in microwave reflux
Dec 01 2018Results of parametric optimization The Taguchi experimental design provided a systematic approach to the determination of an optimal condition for an improved performance quality In this study four operating factors were identified and the objective was to optimize two response functions Microwave reflux extraction was employed for the
Optimization of Microwave
The microwave-assisted extraction of total Flavonoids from Solid wastes (Hawthorn seed) was optimized by response surface methodology Important factors and their ranges were investigated using Plackett-Burman Steepest ascent path was adopted to approach the optimal region and then the Box-Behnken design and response surface analysis were used to determine the
Optimization of Microwave‐Assisted Extraction of Bioactive
Jun 13 2016Response surface methodology was applied to optimize microwave‐assisted extraction (MAE) of total phenolic content (TPC) and antioxidant activity from fruiting bodies of Coriolus versicolor mushroom and to compare its efficiency with conventional reflux extraction A central composite design was employed for the optimization of three MAE parameters including extraction
International Journal of RF and Microwave Computer
A review on the design and optimization of antennas using machine learning algorithms and techniques Design of multiband matching ladders without mutual coupling using parametric representation of Brune functions Serkan Yildiz Ahmet Aksen Directional‐coupler‐based microwave sensors for differential angular‐displacement
The State of the Art of Microwave CAD: EM
rameter extraction nonlinear simulation nominal design statistical modeling and yield optimization in the context of such physics-oriented microwave circuit optimization Topics included analytical large-signal physical models of MESFETs and nonlinear circuit analysis with physics-based models integrated into the harmonic balance equations
Study on the microwave
Lin S Gao X L Yue P X Yue L N Optimization of microwave extraction process of TP by orthogonalmethod Food Research and Development 2009 30: 52―55 (in Chinese) Pan X J Niu G G Liu H Z Microwave-assisted extraction of teapolyphenols and tea caffeine from green tea leaves Chem Eng Pro 2003 42: 129―133
Parametrics and Optimization Using
Parametrics and Optimization Using Ansoft HFSS Ansoft Corp Pittsburgh PA The high frequency structure simulator (HFSS) is widely recognized as the tool that brought the power of the finite element method to three-dimensional (3-D) RF and microwave design Finite element analysis allows complicated 3-D structures such as transitions filters
Microwave
investigated using optimum condition of extraction In this study sesame leaves were extracted and optimized using microwave radiation and orthogonal design respectively The result from the parametric study gave an optimum condition at 2 min of microwave radiation 600 W of microwave power and 80% of ethanol concentration
FlexiWAVE Microwave Synthesis Platform
The new Milestone flexiWAVE is a flexible microwave synthesis platform It is a common misconception that a laboratory microwave is just a microwave and that there are very few differences between systems We have incorporated in the new flexiWAVE our vision of the future our passion and our knowledge with the ultimate goal of helping chemists






