Studies On Supercritical Carbon Dioxide Extraction And Micro-encapsulation Technology Of Apple Seeds Oil

Supercritical CO₂ fluid extraction was applied to apple seeds extraction. The effect factories on the supercritical extraction were worked out via single factor experiments, and the operative parameters were optimized by use orthogonal experiment. The oil with SCFE-CO₂ under optimal conditions was compared to crude oil extracted by petroleum ether. GC analysis showed that apple seeds oil contained plenty of unsaturated acid (the unsaturated fatty acids are 91.81%,the content of linoleic acid are 59.54%), so apple seeds oil is available for further studying and exploiting. At same time, this study achieves apple seed oil micro-encapsulation with method of"tiny hole and solidifying bath", find a new road for apple process.Results of the study indicate:The Technology of extracting apple seeds oil by Supercritical CO₂ fluid extraction is feasible. The results indicated that the extraction rate of apple seeds oil was affected by extraction pressure,extraction temperature, carbon dioxide flow rate, particle size of material and extracting time. And extraction pressure>extraction temperature>particle size of material>carbon dioxide flow rate>extracting time. Extraction pressure and extraction temperature is the most important factor. The optimum technological condition of extraction: particle size 50 meshes, material weights 300g,working pressure 30～35MPa, temperature 30³5℃, carbon dioxide flow rate 25kg/h, extracting time 1.5h, separate pressure 8MPa, separate temperature 45℃. In this condition, the extraction yield of apple seeds oil is 22.85g in 100g apple seed.Through the comparing test,the results showed that extraction of SCFE is excelled than petroleum ether, and extraction rate of apple seeds oil is higher than organic solvent. The product quality is unparalleled by SCFE, without remainder solvent, so it is adapted to be embedded with micro-encapsulation.Study on apple seed oil micro-encapsulation with method of"tiny hole and solidifying bath", weigh the figure and structure of microcapsule, The results showed that the...