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Extraction with Water‐in‐Carbon Dioxide Microemulsions: A Case Study on Steviol Glycosides
Author(s) -
Cui Jingwen,
Sandahl Margareta,
Wendt Ola F.,
RodriguezMeizoso Irene
Publication year - 2019
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1002/jsde.12325
Subject(s) - chemistry , microemulsion , extraction (chemistry) , chromatography , stevia rebaudiana , supercritical carbon dioxide , steviol , pulmonary surfactant , water extraction , glycoside , supercritical fluid extraction , polyethylene glycol , organic chemistry , stevioside , biochemistry , food science , medicine , alternative medicine , pathology
This work explores the use of water‐in‐supercritical carbon dioxide (scCO 2 ) 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 CO 2 ‐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‐CO 2 microemulsion. Using a modified extraction setup, the microemulsion was created prior to extraction. TMN 6 was able to dissolve enough water in CO 2 to extract steviol glycosides, in detectable but very small amounts.