Supercritical CO2 extraction of essential oils from Thymus vulgaris

被引：0
|
作者：
de Melo, SABV
Costa, GMN
Garau, R
Casula, A
Pittau, B
机构：
[1] Univ Tiradentes, UNIT, ITP, BR-49015070 Aracaju, SE, Brazil
[2] Univ Fed Bahia, DEQ, EP, BR-40210630 Salvador, BA, Brazil
来源：
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING | 2000年 / 17卷 / 03期
关键词：
mathematical modeling; supercritical CO(2) extraction; essential oils; Thymus vulgaris;
D O I：
暂无
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Supercritical CO(2) extraction of essential oil from Thymus vulgaris leaves was studied using experimental data recently obtained in the Florys S.p.A. laboratory. Mass transfer coefficients in the supercritical and solid phases from extraction curves at 40 degrees C and 20 MPa were evaluated using a mathematical model based on the local adsorption equilibrium of essential oil on lipid in leaves. The adsorption equilibrium constant was fitted to these experimental data, and internal and external mass transfer resistances were calculated, allowing identification of the mechanism controlling the extraction process.
引用
收藏
页码：367 / 371
页数：5
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