Abstract
Supercritical-CO2 fluid extraction (SFE) is a green technology which is being used for the extraction of bioactive compounds such as pigments and fatty acids, in recent years. Naturally occurring plants or plant-based extracts are considered potential candidates with antioxidant and antimicrobial activities. Therefore, in this work, a range of locally available natural plants i.e. oregano, Mexican arnica also known as Heterotheca inuloides, lemon peel, and blackberry marc was analyzed for the extraction of high-value compounds. A multivariable linear regression model was used to analyze the output variables in relation with the inputs i.e. pressure (P), temperature (T), and co-solvent (CoS). Based on Arrhenius equation, the linear correlativity of the data with an activation energy Ea = 6064.14 kJ/mol and a pre-exponential factor of k0 = 0.388 s−1 were recorded. The thermodynamic parameters of enthalpy, entropy, and Gibbs free energy were also evaluated, correlating the thermodynamics with the extraction yield of the process.
Original language | English |
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Pages (from-to) | 27-34 |
Number of pages | 8 |
Journal | Journal of Supercritical Fluids |
Volume | 122 |
DOIs | |
Publication status | Published - 1 Apr 2017 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2016 Elsevier B.V.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
- Condensed Matter Physics
- Physical and Theoretical Chemistry