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

scholarly journals Extraction of Added-Value Triterpenoids from Acacia dealbata Leaves Using Supercritical Fluid Extraction

Processes ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 1159
Author(s):  
Vítor H. Rodrigues ◽  
Marcelo M. R. de Melo ◽  
Inês Portugal ◽  
Carlos M. Silva
Keyword(s):  
Mass Spectrometry ◽  
Fatty Acids ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Extraction Yield ◽  
Added Value ◽  
Fluid Extraction ◽  
Acacia Dealbata ◽  
First Time ◽  
Total Extraction

Forestry biomass is a by-product which commonly ends up being burnt for energy generation, despite comprising valuable bioactive compounds with valorisation potential. Leaves of Acacia dealbata were extracted for the first time by supercritical fluid extraction (SFE) using different conditions of pressure, temperature and cosolvents. Total extraction yield, individual triterpenoids extraction yields and concentrations were assessed and contrasted with Soxhlet extractions using solvents of distinct polarity. The extracts were characterized by gas chromatography coupled to mass spectrometry (GC-MS) and target triterpenoids were quantified. The total extraction yields ranged from 1.76 to 11.58 wt.% and the major compounds identified were fatty acids, polyols, and, from the triterpenoids family, lupenone, α-amyrin and β-amyrin. SFE was selective to lupenone, with higher individual yields (2139–3512 mg kgleaves−1) and concentrations (10.1–12.4 wt.%) in comparison to Soxhlet extractions, which in turn obtained higher yields and concentrations of the remaining triterpenoids.

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 Lipids and Enrichment of DHA from Freshwater Fish Processing Wastes in Thailand

2014 ◽  
Vol 1044-1045 ◽  
pp. 444-447 ◽  
Author(s):  
Thitiphan Chimsook
Keyword(s):  
Fatty Acids ◽  
Polyunsaturated Fatty Acids ◽  
Freshwater Fish ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Omega 3 ◽  
Fish Processing ◽  
Fluid Extraction ◽  
Processing Wastes ◽  
By Products

Nowadays, an awareness of health benefits of omega-3 has been found. Polyunsaturated fatty acids, especially DHA, are more attention due to their role in human health. Hence, this study investigated the potential of by-products as freshwater fish source of omega-3 polyunsaturated fatty acids (omega-3 PUFAs). The by-products of processing accounted for approximately 55% of the catfish industry. Supercritical fluid extraction (SFE) of the by-products at 35 MPa, 40 ◦C, ethanol (95%, v/v) as the co-solvent, and the mass ratio of by-products to co-solvent as 1:1 generated a lipid yield at 30.9% and 21.5 % docosahexaenoic acid (DHA). Additionally, urea complexation was an effective tool to enrich and purify DHA from lipids. DHA purity increased from 21.5% to 38.4% under the optimum complexation condition.

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