Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/41539
標題: Recovery and enhancement of unsaturated fatty acids in soft-shelled turtle fish oil using supercritical carbon dioxide and associated catalase release activity
作者: Chang, L.H.
張傑明
Shen, C.T.
Hsieh, S.J.
Hsu, S.L.
Chang, H.C.
Chang, C.M.J.
張厚謙
關鍵字: Soft-shelled turtle fish
Unsaturated fatty acids
Extractive
distillation
Supercritical carbon dioxide
Catalase activity
ethyl-esters
co2
fractionation
separation
extraction
期刊/報告no:: Separation and Purification Technology, Volume 64, Issue 2, Page(s) 213-220.
摘要: This work studied concentration enhancement of omega-3 fatty acids extracted from soft-shelled turtle fish (Pelodiscus sinensis) oil bags by using supercritical carbon dioxide (SC-CO(2)). Crude oil was obtained by using top-down pressurized carbon dioxide extraction at 60 bar and 328K. Crude oil was then ethylated and concentrated using a counter-current SC-CO(2) extractive distillation at 200 bar and 353 K. 81 wt% of unsaturated fatty acids (i.e. C(20-24)) of this ethylated oil was successfully obtained in the raffinate of the distillation. The reflux flow rate, the carbon dioxide-to-oil ratio and the extraction temperature were found to be important in affecting this concentration of the C(20-24). The colurnti-height versus concentration of C(20-24) was examined using the Riccati equation. Furthermore, the catalase activity of rat macrophage RAW 264.7 treated with the SC-CO(2) raffinate was investigated. (C) 2008 Elsevier B.V. All rights reserved.
URI: http://hdl.handle.net/11455/41539
ISSN: 1383-5866
文章連結: http://dx.doi.org/10.1016/j.seppur.2008.10.014
Appears in Collections:化學工程學系所

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