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.
What are the kinetics and mechanism of sunflower seed oil extraction?
The kinetics and mechanism of the extraction process investigated. It is shown that the process of extracting sunflower seed oil is complicated and include as intra-diffusion and outer-diffusion oil transfer is similar to extraction of target components from other seeds of plant material (amaranth, rapeseed, etc.).
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 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.
