Extraction of fish oil from the skin of Indian mackerel using supercritical fluids.

• Main Authors: Ferdosh, Sahena, Sarker, Zaidul Islam, Selamat, Jinap, Jahurul, Md. Haque Akanda, Khatib, Alfi, Nik Ab Rahman, Nik Norulaini
• Format: Article
• Language: English; English
• Published: Elsevier 2010
• Online Access: http://psasir.upm.edu.my/id/eprint/14682/1/Extraction%20of%20fish%20oil%20from%20the%20skin%20of%20Indian%20mackerel%20using%20supercritical%20fluids.pdf; http://psasir.upm.edu.my/id/eprint/14682/

The total oil was extracted from the ground skin of Indian mackerel (Rastrelliger kanagurta) using various techniques of supercritical fluid extraction (SFE) at 20–35 MPa and 45–75 °C and by the Soxhlet method for comparison. The oil yield increased with pressure and temperature and the highest yields were 24.7, 53.2, 52.8, and 52.3/100 g sample (dry basis) for the continuous, cosolvent, soaking, and pressure swing techniques, respectively, at 35 MPa and 75 °C. The yield from the Soxhlet extraction was 53.6/100 g sample (dry basis). The CO2 consumption was 581.8, 493.6, 484.9 and 290.9 g for the continuous, cosolvent, soaking and pressure swing techniques, respectively, at 35 MPa and 75 °C. The largest recoveries of PUFA, especially the ω-3 family, were achieved from the soaking and pressure swing techniques at 35 MPa and 75 °C. Thus, the pressure swing and soaking techniques are the most effective at extracting the oil from fish skin.