Designing Supercritical Carbon Dioxide Extraction of Triglycerides from Water-washed Ficus awkeotsang M. Achenes, De-shell Jatropha curcas L. seeds, and De-shell Aquilaria crassna Seeds by Surface Response Methodology

• Main Authors: Yang-Jung Cheng, 鄭暘融
• Other Authors: Chieh-Ming J. Chang
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/75553995313284049327

碩士 === 國立中興大學 === 化學工程學系所 === 99 === The aim of this study is to investigate the supercritical carbon dioxide (SC-CO2) extraction of triglycerides from water-washed Ficus awkeotsang M. achenes, de-shell Jatropha curcas L. seeds and de-shell Aquilaria crassna seeds. The amount of extracted triglycerides obtained in conventional extraction was considered to represent 100% as the recovery. The pressure, temperature, and solvent to solid ratio (SSR) were chosen as experimental factors, then response surface methodology(RSM) was employed to simulate quadric equations of total yield (TY), concentration of triglycerides (CTG), recovery of triglycerides (RTG), concentration factor (βTG). For water-washed Ficus awkeotsang M. achenes, in the 16 h Soxhlet n-hexane extraction the TY and CTG were 12.91% and 686.3 mg/g. Under the optimum pressure (370 bar), temperature (335 K), and SSR (130), the TY, CTG, and RTG were 9.24 %, 893.5 mg/g, and 93.2%, respectively. For de-shell Jatropha curcas L. seeds, in the 16 h Soxhlet n-hexane extraction the TY and CTG were 55.63% and 738.2 mg/g. Under the optimum pressure (350 bar), temperature (325 K), and SSR (82), the TY, CTG, and RTG were 43.02 %, 936.2 mg/g, and 99.1%, respectively. For de-shell Aquilaria crassna seeds, in the 16 h Soxhlet n-hexane extraction the TY and CTG were 43.96% and 625.1 mg/g. Under the optimum pressure (340 bar), temperature (333 K), and SSR (115), the TY, CTG, and RTG were 36.89 %, 709.5 mg/g, and 95.4%, respectively.