Correlation of Solubilities and Entrainer Effects for Fatty Acids and Higher Alcohols in Supercritical Carbon Dioxide Using SRK Equation of State with Association Model.

2000 ◽  
Vol 33 (3) ◽  
pp. 538-544 ◽  
Author(s):  
Morio Yamamoto ◽  
Yoshio Iwai ◽  
Taro Nakajima ◽  
Daisaku Tanabe ◽  
Yasuhiko Arai
Keyword(s):  
Carbon Dioxide ◽  
Fatty Acids ◽  
Equation Of State ◽  
Supercritical Carbon Dioxide ◽  
Higher Alcohols ◽  
Association Model ◽  
Supercritical Carbon

Influence of cosolvent on solubilities of fatty acids and higher alcohols in supercritical carbon dioxide

1996 ◽  
Vol 125 (1-2) ◽  
pp. 115-128 ◽  
Author(s):  
Yoshio Koga ◽  
Yoshio Iwai ◽  
Yoshiaki Hata ◽  
Morio Yamamoto ◽  
Yasuhiko Arai
Keyword(s):  
Carbon Dioxide ◽  
Fatty Acids ◽  
Supercritical Carbon Dioxide ◽  
Higher Alcohols ◽  
Supercritical Carbon

scholarly journals RECEIVING OIL FROM CLOUDBERRIES FRUITS BY SUPERCRITICAL CARBON DIOXIDE EXTRACTION

2018 ◽  
pp. 91-97
Author(s):  
Artyom Dmitrievich Ivakhnov ◽  
Kristina Sergeevna Sadkova ◽  
Alina Sergeyevna Sobashnikova ◽  
Tat'yana Eduardovna Skrebets ◽  
Mikhail Vladislavovich Bogdanov
Keyword(s):  
Carbon Dioxide ◽  
Fatty Acids ◽  
Supercritical Carbon Dioxide ◽  
Unsaturated Fatty Acids ◽  
Optimum Conditions ◽  
Hexane Extraction ◽  
Rubus Chamaemorus ◽  
The Difference ◽  
Key Indicators ◽  
Supercritical Carbon

Comparative researches of ways of oil extraction from the fulfilled fruits of cloudberries (Rubus chamaemorus) with application of hexane and supercritical carbon dioxide as solvents are executed. Optimization is performed and optimum conditions of supercritical fluid extraction of oil are defined with use of central composite design of 2nd order. Pressure of carbon dioxide of 350 atm, temperature 85 °C, duration of extraction of 80 min are the optimum conditions of carrying out of the process. The yield of oil is 9.0%. Quality key indicators of the received oil were defined. The difference between the oil received by the SKF-CO2 method and the oil received by hexane extraction consists in improvement of organoleptic properties, the raised share of the combined fatty acids at decrease of a share of the free acids and high content of unsaturated fatty acids. It is shown that supercritical carbon dioxide can be an alternative to the hydrocarbons which are traditionally used for these purposes.

scholarly journals Characterization and Biological Activities of Seed Oil Extracted from Berberis dasystachya Maxim. by the Supercritical Carbon Dioxide Extraction Method

Molecules ◽  
2020 ◽  
Vol 25 (8) ◽  
pp. 1836
Author(s):  
Lijuan Han ◽  
Qingqing Han ◽  
Yongjing Yang ◽  
Honglun Wang ◽  
ShuLin Wang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Fatty Acids ◽  
Gas Chromatography ◽  
Supercritical Carbon Dioxide ◽  
Extraction Method ◽  
Unsaturated Fatty Acids ◽  
Biological Activities ◽  
Maximum Yield ◽  
Dependent Manner ◽  
Supercritical Carbon

Characterization of the structure and pharmacological activity of Berberis dasystachya Maxim., a traditional Tibetan medicinal and edible fruit, has not yet been reported. In this study, central composite design (CCD) combined with response surface methodology (RSM) was applied to optimize the extraction conditions of B. dasystachya oil (BDSO) using the supercritical carbon dioxide (SC-CO2) extraction method, and the results were compared with those obtained by the petroleum ether extraction (PEE) method. The chemical characteristics of BDSO were analyzed, and its antioxidant activity and in vitro cellular viability were studied by DPPH, ABTS, reducing power assay, and MTT assay. The results showed that the maximum yield of 12.54 ± 0.56 g/100 g was obtained at the optimal extraction conditions, which were: pressure, 25.00 MPa; temperature 59.03 °C; and CO2 flow rate, 2.25 SL/min. The Gas chromatography (GC) analysis results showed that BDSO extracted by the SC-CO2 method had higher contents of unsaturated fatty acids (85.62%) and polyunsaturated fatty acids (57.90%) than that extracted by the PEE method. The gas chromatography used in conjunction with ion mobility spectrometry (GC–IMS) results showed that the main volatile compounds in BDSO were aldehydes and esters. BDSO also exhibited antioxidant ability in a dose-dependent manner. Moreover, normal and cancer cells incubated with BDSO had survival rates of more than 85%, which indicates that BDSO is not cytotoxic. Based on these results, the BDSO extracted by the SC-CO2 method could potentially be used in other applications, e.g., those that involve using berries of B. dasystachya.

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