Extraction kinetics modeling of wheat germ oil supercritical fluid extraction

2019 ◽  
Vol 43 (9) ◽  
Author(s):  
Nemanja Bojanić ◽  
Nemanja Teslić ◽  
Dušan Rakić ◽  
Mirjana Brdar ◽  
Aleksandar Fišteš ◽  
...  
Keyword(s):  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Wheat Germ ◽  
Extraction Kinetics ◽  
Fluid Extraction ◽  
Wheat Germ Oil ◽  
Kinetics Modeling

scholarly journals Supercritical Fluid Extraction Kinetics of Cherry Seed Oil: Kinetics Modeling and ANN Optimization

Foods ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1513
Author(s):  
Ivana Dimić ◽  
Lato Pezo ◽  
Dušan Rakić ◽  
Nemanja Teslić ◽  
Zoran Zeković ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Flow Rate ◽  
Seed Oil ◽  
Statistical Tests ◽  
Initial Slope ◽  
Extraction Kinetics ◽  
Fluid Extraction ◽  
Kinetics Modeling

This study was primarily focused on the supercritical fluid extraction (SFE) of cherry seed oil and the optimization of the process using sequential extraction kinetics modeling and artificial neural networks (ANN). The SFE study was organized according to Box-Behnken design of experiment, with additional runs. Pressure, temperature and flow rate were chosen as independent variables. Five well known empirical kinetic models and three mass-transfer kinetics models based on the Sovová’s solution of SFE equations were successfully applied for kinetics modeling. The developed mass-transfer models exhibited better fit of experimental data, according to the calculated statistical tests (R2, SSE and AARD). The initial slope of the SFE curve was evaluated as an output variable in the ANN optimization. The obtained results suggested that it is advisable to lead SFE process at an increased pressure and CO2 flow rate with lower temperature and particle size values to reach a maximal initial slope.

scholarly journals Supercritical fluid extraction of hops

2007 ◽  
Vol 72 (1) ◽  
pp. 81-87 ◽  
Author(s):  
Zoran Zekovic ◽  
Ivana Pfaf-Sovljanski ◽  
Olgica Grujic
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
The Other ◽  
Second Step ◽  
Qualitative And Quantitative Analysis ◽  
Extraction Kinetics ◽  
Fluid Extraction ◽  
Qualitative And Quantitative ◽  
Co2 Flow

Five cultivars of hop were extracted by the method of supercritical fluid extraction using carbon dioxide (SFE-CO2) as extractant. The extraction (50 g of hop sample using a CO2 flow rate of 97.725 L/h) was done in the two steps: 1. extraction at 150 bar and 40?C for 2.5 h (sample of series A was obtained) and, after that, the same sample of hop was extracted in the second step: 2. extraction at 300 bar and 40?C for 2.5 h (sample of series B was obtained). The Magnum cultivar was chosen for the investigation of the extraction kinetics. For the qualitative and quantitative analysis of the obtained hop extracts, the GC-MS method was used. Two of four the most common compounds of hop aroma (?-humulene and ?-caryophyllene) were detected in samples of series A. In addition, isomerized ?-acids and a high content of ?-acids were detected. The ?-acids content in the samples of series B was the highest in the extract of the Magnum cultivar (it is a bitter variety of hop). The low contents of ?-acids in all the other hop samples resulted in extracts with low ?-acids content, i.e., that contents were under the prescribed ?-acids content.

Supercritical fluid extraction of fig leaf gourd seeds oil: Fatty acids composition and extraction kinetics

2009 ◽  
Vol 49 (1) ◽  
pp. 32-36 ◽  
Author(s):  
M. Gabriela Bernardo-Gil ◽  
Miguel Casquilho ◽  
M. Mercedes Esquível ◽  
M. Albertina Ribeiro
Keyword(s):  
Fatty Acids ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Fatty Acids Composition ◽  
Extraction Kinetics ◽  
Fluid Extraction

Extraction kinetics and ANN simulation of supercritical fluid extraction of sage herbal dust

2017 ◽  
Vol 130 ◽  
pp. 327-336 ◽  
Author(s):  
Branimir Pavlić ◽  
Oskar Bera ◽  
Senka Vidović ◽  
Lazar Ilić ◽  
Zoran Zeković
Keyword(s):  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Extraction Kinetics ◽  
Fluid Extraction
Sign in / Sign up

Export Citation Format

Share Document