Supercritical CO2 extraction of triterpenes from rosemary leaves: Kinetics and modelling. Issue 13 (1st September 2016)

• Record Type: Journal Article
• Authors: Bensebia, O.; Bensebia, B.; Allia, Kh.; Barth, D.
• Is Part Of: Separation science and technology. Volume 51:Issue 13(2016)
• Page Start: 2174
• Page End: 2182
• Publication Date: 2016-09-01
• Subjects: Kinetics modelling -- pentacyclic triterpene -- rosemary -- supercritical fluid extraction; Separation (Technology) -- Periodicals; 660.284205
• DOI: 10.1080/01496395.2016.1202977
• Languages: English
• ISSNs: 0149-6395

Abstract

ABSTRACT: The pentacyclic triterpene α, β-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°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.