Extraction of jojoba seed oil using supercritical CO2+ethanol mixture in green and high-tech separation process

2007 ◽  
Vol 39 (3) ◽  
pp. 330-337 ◽  
Author(s):  
Uğur Salgın
Keyword(s):  
Supercritical Co2 ◽  
Seed Oil ◽  
Separation Process ◽  
High Tech ◽  
Ethanol Mixture ◽  
Jojoba Seed

Trigonella foenum-graecum L. Seed Oil Obtained by Supercritical CO2 Extraction

2012 ◽  
Vol 89 (12) ◽  
pp. 2269-2278 ◽  
Author(s):  
Renming Yang ◽  
Honglun Wang ◽  
Nianhua Jing ◽  
Chenxu Ding ◽  
Yourui Suo ◽  
...  
Keyword(s):  
Supercritical Co2 ◽  
Seed Oil ◽  
Supercritical Co2 Extraction ◽  
Trigonella Foenum Graecum ◽  
Trigonella Foenum Graecum L

Extraction of safflower seed oil by supercritical CO2

2009 ◽  
Vol 92 (4) ◽  
pp. 370-376 ◽  
Author(s):  
Xiaojin Han ◽  
Leming Cheng ◽  
Rong Zhang ◽  
Jicheng Bi
Keyword(s):  
Supercritical Co2 ◽  
Seed Oil ◽  
Safflower Seed ◽  
Safflower Seed Oil

scholarly journals Effect of drying method on supercritical CO2 extraction of grape seed oil

Poljoprivreda ◽  
2019 ◽  
Vol 25 (1) ◽  
pp. 81-88 ◽  
Author(s):  
Mario Jakobović ◽  
Stela Jokić ◽  
Melita Lončarić ◽  
Snježana Jakobović ◽  
Krunoslav Aladić ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Sample Preparation ◽  
Supercritical Co2 ◽  
Seed Oil ◽  
Grape Seed ◽  
Cabernet Sauvignon ◽  
Drying Method ◽  
Supercritical Co2 Extraction ◽  
White Variety ◽  
Grape Seed Oil

Aim of this study was to monitor the influence of drying method (naturally and chamber drying) and different sample preparation on supercritical CO2 extraction of oil from three grape seed varieties (Graševina, Zweigelt, Cabernet Sauvignon). The highest oil content was obtained from naturally dried screened and washed seeds of red variety Cabernet Sauvignon (14.85%) and lowest from chamber dried screened seeds of white variety Graševina (7.67%). Peroxide value ranged from 0.36 to 1.77 mmol O2/kg oil, free fatty acids 0.28-8.0%, and insoluble impurities 0.05-0.28%. Determined fatty acids were palmitic (6.98-11.58%), stearic (3.82-6.59%), oleic (14.90-19.97%) and linoleic acid (61.82-71.96%) in oil obtained from naturally dried seeds and 6.84-8.68%, 4.12-5.73%, 15.10-20.18% and 67.88-70.76% in oil from chamber dried seeds, respectively. In defatted cakes after supercritical CO2 extraction, protein and fibre content ranged from 8.17 to 9.85% and 34.58 to 43.96%, respectively. According to ANOVA results, sample preparation and drying method had statistically significant influence on grape seed oil extraction.

Supercritical CO2-mediated countercurrent separation of essential oil and seed oil

2015 ◽  
Vol 104 ◽  
pp. 104-111 ◽  
Author(s):  
Shohei Yasumoto ◽  
Armando T. Quitain ◽  
Mitsuru Sasaki ◽  
Hideo Iwai ◽  
Masahiro Tanaka ◽  
...  
Keyword(s):  
Essential Oil ◽  
Supercritical Co2 ◽  
Seed Oil

scholarly journals Optical Diagnostics of Supercritical CO2 and CO2-Ethanol Mixture in the Widom Delta

Molecules ◽  
2020 ◽  
Vol 25 (22) ◽  
pp. 5424
Author(s):  
Evgenii Mareev ◽  
Timur Semenov ◽  
Alexander Lazarev ◽  
Nikita Minaev ◽  
Alexander Sviridov ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Optical Properties ◽  
Supercritical Co2 ◽  
Cluster Formation ◽  
Mie Scattering ◽  
Density Fluctuations ◽  
Optical Measurements ◽  
Dynamics Simulation ◽  
Ethanol Mixture ◽  
Wide Range

The supercritical CO2 (scCO2) is widely used as solvent and transport media in different technologies. The technological aspects of scCO2 fluid applications strongly depend on spatial–temporal fluctuations of its thermodynamic parameters. The region of these parameters’ maximal fluctuations on the p-T (pressure-temperature) diagram is called Widom delta. It has significant practical and fundamental interest. We offer an approach that combines optical measurements and molecular dynamics simulation in a wide range of pressures and temperatures. We studied the microstructure of supercritical CO2 fluid and its binary mixture with ethanol in a wide range of temperatures and pressures using molecular dynamics (MD) simulation. MD is used to retrieve a set of optical characteristics such as Raman spectra, refractive indexes and molecular refraction and was verified by appropriate experimental measurements. We demonstrated that in the Widom delta the monotonic dependence of the optical properties on the CO2 density is violated. It is caused by the rapid increase of density fluctuations and medium-sized (20–30 molecules) cluster formation. We identified the correlation between cluster parameters and optical properties of the media; in particular, it is established that the clusters in the Widom delta acts as a seed for clustering in molecular jets. MD demonstrates that the cluster formation is stronger in the supercritical CO2-ethanol mixture, where the extended binary clusters are formed; that is, the nonlinear refractive index significantly increased. The influence of the supercritical state in the cell on the formation of supersonic cluster jets is studied using the Mie scattering technique.

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