Modeling of the Thyme–Supercritical Carbon-Dioxide Extraction System. II. The Influence of Extraction Time and Carbon Dioxide Pressure

2003 ◽  
Vol 38 (3) ◽  
pp. 541-552 ◽  
Author(s):  
Zoran Zeković ◽  
Žika Lepojević ◽  
Aleksandar Tolić
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Extraction Time ◽  
Extraction System ◽  
Supercritical Carbon Dioxide Extraction ◽  
Carbon Dioxide Extraction ◽  
Carbon Dioxide Pressure ◽  
Supercritical Carbon

scholarly journals THE EFFECT OF SUPERCRITICAL CARBON DIOXIDE EXTRACTION OF AMARANTH OILCAKE ON THE YIELD OF THE EXTRACT AND ITS SQUALENE CONTENT

2020 ◽  
pp. 315-322
Author(s):  
Akbar Isomiddinovich Sanoev ◽  
Shakhnoza Komilovna ◽  
Nuriddin Isomiddinovich Mukarramov ◽  
Rano Karimovna Rakhmanberdyevа ◽  
Mavjuda Khafizovna Malikova ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Soluble Sugars ◽  
Water Soluble ◽  
Extraction Time ◽  
Supercritical Carbon Dioxide Extraction ◽  
Carbon Dioxide Extraction ◽  
Squalene Content ◽  
Universal Variety ◽  
Supercritical Carbon

The contents and compositions of the oil, carbohydrates and protein of oil cake of amaranth of the universal variety «Kharkovsky-1» were studied. It was found that cake contains up to 4.5% oil with 5.4% squalene, 65.95% crude carbohydrates with a predominance (50.55%) of water-soluble polysaccharides and 27.7% protein. The effect of a pressure of 80–200 bar and an extraction time of 30–120 min with CO2 extraction on the yield of the crude extract, the oil phase of the extract and the content of squalene in them was studied. It was found that the optimal conditions are a pressure of 90 bar and an extraction time of 30 minutes at a temperature of 50 °C; under these conditions, 6.6% crude CO2 extract with 17.8% squalene was obtained. Experiments with supercritical carbon dioxide extraction of oilcake impregnated with ethanol with a hydromodule feed: a 2 : 1 co-solvent showed that ethanol does not significantly affect the squalene content in the oil phase of the CO2 extract. More than 62.4% of crude carbohydrates consisting of 3.0% alcohol-soluble sugars, 42.2% water-soluble polysaccharides, 7.8% pectin substances, 2.4% hemicelluloses and 7.0% fiber were found in meal after CO2 extraction of oilcake. The protein content in amaranth meal after CO2 extraction was 22.6%.

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