Optimization of arecoline extraction from areca nut using supercritical carbon dioxide.

The mass transfer of arecoline using supercritical carbon dioxide (SC-CO2) from areca nut is studied by analyzing the diffusion coefficient derived from Crank equation for sphere model. Comparisons of the SC-CO2 extracted yield under various conditions showed that the combination of pressure at 10.3 MPa and temperature of 50°C provided the optimum condition for extraction, followed by extraction at 40°C and 25.6 MPa. From the diffusion coefficient analysis, the optimum conditions also gave the highest coefficients. It was found that the yield is directly proportional to the values of the coefficients. Key words: areca nut, arecoline, supercritical carbon dioxide, mass transfer, modelin

Optimization of arecoline extraction from areca nut using supercritical carbon dioxide.

The mass transfer of arecoline using supercritical carbon dioxide (SC-CO2) from areca nut is studied by analyzing the diffusion coefficient derived from Crank equation for sphere model. Comparisons of the SC-CO2 extracted yield under various conditions showed that the combination of pressure at 10.3 MPa and temperature of 50°C provided the optimum condition for extraction, followed by extraction at 40°C and 25.6 MPa. From the diffusion coefficient analysis, the optimum conditions also gave the highest coefficients. It was found that the yield is directly proportional to the values of the coefficients

Optimization of SC–CO2 extraction of zerumbone from Zingiber zerumbet (L) Smith

Response surface methodology (RSM) was applied to optimize the variables affecting the Supercritical carbon dioxide (SC-CO₂) extraction of non-polar compounds from Zingiber zerumbet using the Box-Behnken design (BBD). Dependent variables were the percentage of the chemical components in the ginger vis a vis α-caryophyllene (y ₁), camphene (y ₂), and zerumbone (2,6,10-cycloundecatrien-1-one, 2,6,9,9-tetramethyl-) (y ₃). Pressure was the most significant parameter affecting the amount of each compound extracted. When temperature was kept constant and pressure was increased, all of the dependent variables increased concomitantly. Since pressure and temperature are two of the major influential factors in the extraction using SC-CO₂, any combination of these two parameters could be selected to ascertain the optimum combination for a particular compound in the extract. Extraction at 30°C and 55MPa with total amount of 30g of CO₂ used was found to maximize all the responses

MEDIUM-CHAIN TRIGLYCERIDES RICH OIL EXTRACTION USING SUPERCRITICAL CARBON DIOXIDE

Extraction of medium-chain triglycerides (MCTs) rich oil from coconut using supercritical carbon dioxide was performed. MCTs have been reported have beneficial value for health. In this paper, solubility of the oil in supercritical carbon dioxide examination and evaluation of the effect of extraction parameters (pressure, temperature and carbon dioxide consumption) were reported. The extraction conditions were at the pressure and temperature range of 3000 to 5000 psi and 40 to 80 oC respectively. The solubility experimental data was correlated with Chrastil&rsqu

Supercritical carbon dioxide extraction of constituents of pithecellobin jiringan seed and their identification using time of flight gas spectrometry

Supercritical carbon dioxide (sCO 2) is a fluid state of carbon dioxide where it is held at or above its critical temperature and critical pressure. Carbon dioxide usually behaves as a gas in air at standard temperature and pressure (STP), or as a solid called dry ice when frozen