Solvent and Temperature
Effect of temperature and solvent on the total phenolic compounds extraction from leaves of Ficus carica
... Many valuable natural materials have traditionally been extracted with organic solvents. However, some of the organic solvents are believed to be toxic, and the extraction conditions are often harsh. A simple method ...
7
The Influence of Type of Solvent and Extraction Temperature of Corn Silk Extracts
... extration temperature of corn silk ...extraction temperature that consists S1=60°C, S2=70°C, and ...of solvent and extraction temperature of corn silk extracts have significantly effect on ...
5
SWNTs and MWNTs (M=2) for Nano Drug Delivery: Temperature and Solvent effect
... the solvent effects on the relative energies and dipole moment values and the structural properties of water, methanol and ethanol surrounding single-walled and multi walled carbon ...the temperature effect ...
8
A study on Krafft temperature of cetylpyridinium bromide in aqueous and mixed solvent systems
... Krafft temperature of Cetylpyridinium bromide(CPBr), 100ml of aqueous and mixed solvent solutions of CPBr of concentration more than its CMC was prepared and kept in refrigerator for ...The ...
5
Probing temperature- and solvent-dependent protein dynamics using terahertz time-domain spectroscopy
... given temperature is an indication that a change in the dynamical behaviour of the sample has ...the temperature-dependent changes seen in these studies are not attributed to a true glass transition but ...
10
ESR studies of radical ions
... elusions with the observed effects on ion pair formation of varying cation, anion, solvent,and temperature, the conditions favouring the conversion of tight ion pairs to solvent-separate[r] ...
230
Developing a high-temperature solvent-free system for efficient biosynthesis of octyl ferulate
... Lipase-catalyzed synthesis of octyl ferulate from ferulic acid (20 mM), Novozym ®. 435 (1,500 PLU) and octanol were carried out in a water bath at a reaction time of 72[r] ...
28
Oxy anion accelerated rearrangements
... Depending on the reactivity of the particular alkoxide, three parameters, counterion, solvent, and reaction temperature, were altered to increase or decrease the severity of the rearrang[r] ...
309
Probing stereoselectivity with carbohydrates
... To a colourless solution of the a-sulfone (99a), (0.175 g, 0.0375 mmol) in dry THF (1.75 mL), 4 Â molecular sieves were added. The reaction mixture was cooled to -78 °C under an atmosphere of argon. After 10 minutes, IM ...
157
Statistical Modeling and Optimization of Biodiesel Production from Azadirachta Indica (Neem) Using Co-Solvent Technique
... Biodiesel have been produced from different vegetable oils like Jatropha, mustard, chicken fat, waste vegetable oil, cotton seed and neem[1,4,5,6,7,8]. Biodiesel can be used to power diesel engine vehicles as its fuel ...
7
Effects of Yttrium Doping on the Performance of Ru Based Catalysts for Hydrogenation of Fatty Acid Methyl Ester
... reaction temperature, the hydrogen pressure, the proportion of yttrium, the amount of catalyst and the solvent on the hydrogenation of methyl palmitate were ...
7
Sampling Systems pdf
... exploits solvent trapping, the column inlet must be kept cool, ...the solvent boiling point ...the temperature control of the oven, usually 5 } 10 mm from the oven wall (a greater distance increases ...
9
Solubility determination from clear points upon solvent addition
... The SA method, similar to the TV method, results in an equilibrium composition at a certain temperature. However, in the case of polymorphs, co-crystals or other systems, it is unclear which equilibrium is ...
28
A statistical study of the helix-coil transition of agarose
... At the end of this operation, the vial is placed in a bain-marie without stopping the agitation. This phase is extended more or less long depending on the concentration of the sample. When the entire polymer is ...
8
N-HETEROCYCLIC CARBENES: FROM DESIGN TO SYNTHESIS AND THEIR APPLICATION AS NUCLEOPHILIC CATALYSTS
... The solution was allowed to cool to ambient temperature and the solvent removed under reduced pressure to afford a crude orange solid. The[r] ...
429
Optimization of phenolic compounds extraction with antioxidant activity from açaí, blueberry and goji berry using response surface methodology
... and temperature (30 °C and 60 °C) on the extraction of total phenolic compounds (TPC) and activity antioxidant ...and temperature had a positive effect on antioxidant activity (AA) in their highest levels, ...
10
Solid–liquid extraction of rice bran oil using binary mixture of ethyl acetate and dichloromethane
... The temperature applied during the extraction process may significantly alter the recovery of the ...the solvent-bran mixture not only forces the oil to secrete out from solid bran, but also lowers the ...
11
Evaluation of Various Factors Affecting Fluorescence Emission Behavior of Ochratoxin A: Effect of Ph, Solvent and Salt Composition
... of solvent, aqueous-organic phase ratio, temperature etc ...pH, solvent composition and temperature variables on the fluorescence emission behavior of OTA by exploration of designing a field ...
6
CHEM12_C16_L1_LO.ppt
... Temperature affects the solubility of solid, liquid, and gaseous solutes in a solvent; both temperature and pressure affect the solubility of gaseous solutes... 16.1 Properties of Sol[r] ...
56
Optimization of Oil Extraction and Characterization from Tamarindus Indica Linn Seed Oil
... to solvent ratio (1:6w/v), time (6h), temperature reflux and agitation speed ...alternative solvent, since it has low cost and it may be produced from a large variety of biological materials using ...
6