Supercritical CO2 extraction of triterpenes from rosemary leaves:Kinetics and modelling

Author:

Bensebia, O.  Bensebia, B.  Allia, Kh.  Barth, D.  

Journal:

SEPARATION SCIENCE AND TECHNOLOGY

Issue Date:

2016

Abstract(summary):

The pentacyclic triterpene ,-amyrin is a promising bioactive natural product. Supercritical fluid extraction and fractionation are used to obtain pentacyclic triterpenes compounds from dried rosemary leaves. Experiments were conducted at 50 degrees C and 180 bar, and the fractionation of the extract was accomplished in two separators. The shift to a diffusion-controlled regime occurred when 65% of the total oil was extracted. The moments analysis of kinetic curves indicated that the contribution of the axial dispersion, the external transfer and the internal transfer were 9.16%, 80.24% and 10.58%, respectively. The overall extraction curve was represented using three mathematical models.

Page:

2174---2182