Supercritical carbon dioxide extraction of volatile compounds from rosemary

被引：0
|
作者：
Coelho, JAP
Mendes, RL
Provost, MC
Cabral, JMS
Novais, JM
Palavra, AMF
机构：
[1] Univ Tecn Lisboa, DEPT ENGN QUIM, INST SUPER TECN, P-1096 LISBON, PORTUGAL
[2] INST NACL ENGN & TECNOL IND, DEPT ENERGIAS RENOVAVEIS, P-1699 LISBON, PORTUGAL
[3] US FDA, CTR DEVICES & RADIOL HLTH, ROCKVILLE, MD 20850 USA
来源：
SUPERCRITICAL FLUIDS: EXTRACTION AND POLLUTION PREVENTION | 1997年 / 670卷
关键词：
D O I：
暂无
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Supercritical CO2 extraction of oleoresin from portuguese rosemary (Rosmarinus Officinalis L.) was carried out with a now apparatus at temperatures of 35 and 40 degrees C and pressures of 100, 125 and 200 bar. The highest fraction of volatile compounds (oil) in the oleoresin was obtained at 100 bar and 40 degrees C. An unsteady mathematical model was able to give good representation of the supercritical extraction curves and a mass transfer coefficient was determined using the successive quadratic programming method. Values of this coefficient ranged between 4.49 and 15.07 kg/m(3)s and the shift to a diffusion-controlled regime occurred when 44% of the total oil was extracted.
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页码：101 / 109
页数：9
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