By Farid Chemat, Maryline Abert Vian
This publication provides a whole photo of the present state of the art in substitute and eco-friendly solvents used for laboratory and business usual product extraction when it comes to the newest thoughts, unique equipment and secure items. It offers the mandatory theoretical history and information on extraction, suggestions, mechanisms, protocols, commercial purposes, protection precautions and environmental affects. This ebook is aimed toward pros from undefined, academicians engaged in extraction engineering or common product chemistry examine, and graduate point scholars. the person chapters supplement each other, have been written through revered overseas researchers and famous pros from the undefined, and handle the newest efforts within the box. it's also the 1st sourcebook to target the speedy advancements during this field.
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Additional resources for Alternative Solvents for Natural Products Extraction
43 Fig. 3 Schematic illustration of a pure component P V (pressure vs. volume) diagram (T temperature, TC critical temperature, P pressure, PC critical pressure, Psat saturation pressure) well-noted advantages of the SFE process are the solvent recycling possibility, low energy consumption, adjustable solvent selectivity, prevention of oxidation reactions, and production of high-quality extracts. The properties of SC-CO2 can be modified over relatively wide ranges. The solvent power of SC-CO2 is high for hydrophobic or slightly hydrophilic components and decreases with increasing molecular weight .
By instantly dropping the pressure, rapid autovaporization of the moisture inside the material will occur. It will swell and lead to texture change which results in higher porosity as well as a greater specific surface area and reduced masstransfer resistance through Darcy’s vapor transfer instead of Fick’s similar law. The short time – high temperature operation (few seconds) and the immediate drop in temperature (to be lower than 30 ºC) thanks to the pressure drop prevent further thermal deterioration and provide a final extract of great quality.
Temperature) diagram: the supercritical region is indicated by the hatched lines (TP triple point, CP critical point, PC critical pressure, TC critical temperature) (Adapted from Brunner , with kind permission from Springer Science and Business Media) Supercritical PC CP Liquid Solid Gas TP TC Temperature 3 Supercritical Fluid Extraction: A Global Perspective of the Fundamental. . 43 Fig. 3 Schematic illustration of a pure component P V (pressure vs. volume) diagram (T temperature, TC critical temperature, P pressure, PC critical pressure, Psat saturation pressure) well-noted advantages of the SFE process are the solvent recycling possibility, low energy consumption, adjustable solvent selectivity, prevention of oxidation reactions, and production of high-quality extracts.