Abstract
Lecithin was isolated from squid viscera residues after supercritical carbon dioxide (SC-CO2) extraction at 25MPa and 45°C. The particle formation of squid lecithin with biodegradable polymer, polyethylene glycol (PEG) was performed by PGSS using SC-CO2 in a thermostatted stirred vessel. By applying different temperatures (40 and 50°C) and pressures (20–30MPa), conditions were optimized. Two nozzles of different diameters (250 and 300μm) were used for PGSS and the reaction time was 1h. The average diameter of the particles obtained by PGSS at different conditions was about 0.74–1.62μm. The lowest average size of lecithin particle with PEG was found by the highest SC-CO2 density conditions with the stirring speed of 400rpm and nozzle size of 250μm. The inclusion of lecithin in PEG was quantified by HPLC. Acid value and peroxide value was measured after micronization of lecithin.
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