Ultrasound-assisted extraction of sunflower oil from the cake after sunflower seed pressing

• Main Authors: Milenković Dragan D., Milosavljević Milutin M., Bojić Aleksandar Lj.
• Format: Article
• Language: English
• Published: University of Belgrade - Faculty of Agriculture, Belgrade 2018-01-01
• Series: Journal of Agricultural Sciences (Belgrade)
• Subjects: ultrasound; sunflower; extraction
• Online Access: https://scindeks-clanci.ceon.rs/data/pdf/1450-8109/2018/1450-81091802195M.pdf

The influence of ultrasound application on the extraction (UE) of the cake after sunflower seed pressing was studied. Three different solvents were used for extraction in the Soxhlet apparatus: n-hexane, petroleum ether and extraction petrol. Petrol for extraction showed the highest yield. It has been shown that the using of ultrasound improved the extraction kinetics in the initial period - washing, and in the second period - the diffusion of oil from the mass of the cake. The parameters of the non-stationary diffusion model with and without the use of ultrasound were k' = 0.039 min-1, k' = 0.026 min-1 and b' = 0.713, i.e. b' = 0.589, respectively. Oil yield was also slightly higher in the ultrasonically supported extraction.