南華大學機構典藏系統:Item 987654321/25050
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    题名: Solubilities of fatty acids, fatty acid esters, triglycerides, and fats and oils in supercritical carbon dioxide
    作者: 余哲仁;Yu, Zer-Ran;Singh, Bhajmohan;Rizvi, Syed S. H.;Zollweg, John A.
    貢獻者: 自然生物科技學系
    关键词: solubility;fatty acids;fatty acid esters;fats and oils;supercritical-fluid extraction
    日期: 1994-03
    上传时间: 2017-07-11 16:35:57 (UTC+8)
    摘要: Using supercritical carbon dioxide (SC-CO₂) as the solvent, the solubility of methyl esters, ethyl esters, fatty acids, triglycerides, and fats and oils were studied over a range of temperature and pressures. Equilibrium data from the literature were correlated using the Peng-Robinson equation of state. With the van der Waals (VDW) and Panagiotopoulos and Reid (PR) mixing rules. The data were also correlated using statistical methods and the solubilities predicted by various models were compared with experimental solubilities at the temperature and pressure conditions studied. The equation of state method provided good agreement of theory with experiment for the solubilities of fatty acids and their esters, but less so for the triglycerides, fats and oils. The statistical methods on the other hand, not only predicted the solubilities of fatty acids and fatty acid esters well, but also gave good agreement with the solubilities of triglycerides, fats and oils. Chain length, degree of unsaturation, and functional groups in compounds are known to affect the vapor pressures of these compounds which in turn influence their solubilities in SCCO₂. As expected solubilities decreased in going from fatty acid esters, to fatty acids, to triglycerides.
    關聯: The Journal of Supercritical Fluids
    vol. 7, no. 1
    pp.51-59
    显示于类别:[自然生物科技學系(自然療癒碩士班)] 期刊論文

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