the extraction of sunflower oils sciencedirect

                                               
                                               
                                               
                                               
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  • Does sunflower seed extract linoleic unsaturated fatty acids?
  • The extracted oil is rich in linoleic unsaturated fatty acids. Supercritical carbon dioxide (SC-CO 2) extraction of sunflower seed for the production of vegetable oil is investigated and compared to conventional methods.‌
  • Can supercritical carbon dioxide extract sunflower seed for vegetable oil?
  • Supercritical carbon dioxide (SC-CO 2) extraction of sunflower seed for the production of vegetable oil is investigated and compared to conventional methods. The effects of extracting variables, namely pressure, temperatures, particle size, SC-CO 2 flow rate and co-solvent, on SC-CO 2 extraction are investigated.‌
  • How does pressure affect the extraction yield of sunflower oil?
  • This is due to the solubility of sunflower oil in supercritical carbon dioxide increases at higher pressures even though mass transfer coefficients decreases with a rise in pressure. Fig. 3.1a, Fig. 3.1b, Fig. 3.1c, Fig. 3.1d, Fig. 3.1e shows that cumulative extraction yield is highly sensitive to pressure as compared to other parameters.‌
  • Does ethanol increase the solubility of sunflower seed oil?
  • Cocero and Calvo (1996) successfully demonstrated that the solubility of sunflower oil is increases with increasing in ethanol percentage as a co-solvent and also suggested that, the extraction of some phospholipids are directly proportional to the added ethanol volume which explains the higher cumulative extraction yield of sunflower seed oil.‌
  • Does reduced quadratic model predict extraction yield of sunflower seed oil?
  • Thus, the cumulative extraction yield predicted by reduced-quadratic model lie within −3.62% to +3.59 of experimental values. Fig. 2. Parity plot for the reduced quadratic model, Eq. (5), developed for the prediction of extraction yield of sunflower seed oil extraction.‌
  • Can ethanol extract oil from sunflower collets?
  • Ethanol extracts less crystallizable waxes and more tocopherols and phospholipids. Ethanol showed great ability of extracting sugar, mainly raffinose and sucrose. The ethanolic extraction of oil from sunflower collets was studied and compared with previous data where hexane was used as extraction solvent.