Extraction with Water-in-Carbon Dioxide Microemulsions: A Case Study on Steviol Glycosides
Research output: Contribution to journal › Article
This work explores the use of water-in-supercritical carbon dioxide (scCO2) microemulsions for the extraction of polar metabolites from plants. Stevia rebaudiana Bertoni leaves and polyethylene glycol trimethylnonyl ether (TMN) surfactants were selected for a case study. A CO2-water-TMN 10 mixture at 35 °C and 30.0 MPa extracted 7 mg target analyte/g dry leaves. The extraction was proven to occur due to a water-surfactant liquid solution rather than a water-in-CO2 microemulsion. Using a modified extraction setup, the microemulsion was created prior to extraction. TMN 6 was able to dissolve enough water in CO2 to extract steviol glycosides, in detectable but very small amounts.
|Research areas and keywords||
Subject classification (UKÄ) – MANDATORY
|Number of pages||10|
|Journal||Journal of Surfactants and Detergents|
|Publication status||E-pub ahead of print - 2019 Jul 5|