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標題: Supercritical carbon dioxide extraction of turmeric oil from Curcuma longa Linn and purification of turmerones
作者: Chang, L.H.
Jong, T.T.
Huang, H.S.
Nien, Y.F.
Chang, C.M.J.
關鍵字: supercritical carbon dioxide
turmeric oil
response-surface methodology
antioxidant activity
期刊/報告no:: Separation and Purification Technology, Volume 47, Issue 3, Page(s) 119-125.
摘要: This study investigates separation and purification of three turmerones from the turmeric oil extracted by supercritical carbon dioxide. Nearly, 800 g of supercritical carbon dioxide extraction of 75 g of 0.42 mm turmeric powders at 333 K and 300 bar obtained 6.98 wt% turmeric oil within 2.5 h. A response-surface methodology is adopted for optimizing supercritical carbon dioxide extraction to disclose that the combination of 320 K and 26 MPa gives an optimum production of turmeric oil containing 71 wt% purity of three turmerones. Subsequently, a normal phase silica gel 60 column is employed to separate and purify three major turmerones from the turmeric oil extracted by supercritical carbon dioxide. The 86 wt% purity of Ar-turmerone and 81 wt% purity of alpha+beta-turmerone have been separated, collected, and identified by liquid-solid chromatography, NMR qualification, and HPLC quantification, respectively. (C) 2005 Published by Elsevier B.V.
ISSN: 1383-5866
Appears in Collections:化學系所



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