Trapping efficiencies of various collection solvents after supercritical fluid extraction

Thompson, Peter; Taylor, Larry T.; Richter, Bruce E.; Porter, N.; Ezzell, John L.

doi:10.1002/jhrc.1240161208

Cited by 30 publications

(9 citation statements)

References 13 publications

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“…The efficiency of the different SFE collection models in online assemblies is very important, as it provides quantitative transfer of extracted analytes to the analytical instrument and reduces contamination levels. Four different ways of collecting SF-extracted analytes have been proposed, namely [47]: Solvent collection in a vessel [48], such as that devised by Zougagh et al for adjustable flow control coupled to a methanol liquid trap for future science group the extraction of menthone enantiomers from natural peppermint oil samples [49];…”

Section: Solute Collectionmentioning

confidence: 99%

Bioanalytical Applications Using Supercritical Fluid Techniques

2009

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The bioanalytical applications of supercritical fluid techniques, such as supercritical fluid extraction (SFE) and supercritical fluid chromatography (SFC), are of increasing interest. The main role of these techniques is in the sample preparation and separation of biologically active compounds, particularly drugs and their metabolites, as well as endogenous compounds. An insight is given into the different types of extracting fluids and modifiers, detectors, stationary phases, mobile phases and collection strategies. A critical discussion is presented on the existing state of the art concerning the applications of SFC and SFE with a specific focus on its advantages and limitations in the bioanalytical field. New developments and the possibilities for routine work in the near future are also covered.

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Section: Solute Collectionmentioning

confidence: 99%

Bioanalytical Applications Using Supercritical Fluid Techniques

2009

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“…Thompson et al [26] found, using the Dionex system and nonmodified CO 2 , that a polarity test mix could not be quantitatively (above 90%) trapped when using a single pure collection solvent.…”

Section: Introductionmentioning

confidence: 98%

Statistical Analysis of Liquid Trapping Efficiencies of Fat-Soluble Vitamins Following Supercritical Fluid Extraction

McDaniel

Long

Taylor³

1998

J. High Resol. Chromatogr.

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A series of four complete factorial experiments were performed to determine the major parameters affecting the trapping efficiencies of fat‐soluble vitamins after supercritical fluid extraction. The parameters varied were the collection solvent, extraction flow rate, collection temperature, restrictor temperature, and collection pressurization. The identity of the collection solvent was found to have the most profound effect. The viscosity and surface tension of the collection solvent appeared to have great significance.

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“…As stated above, this represents a problem in analytical-scale SFE. Entrapment of extract into a solvent [26][27][28] or onto a sorbent [29][30][31][32][33][34] are two preferable strategies for quantitative sample collection in SFE; when working with volatile extractables, they are frequently accompanied by cryogenic cooling [29,[35][36][37]. Alas, these approaches, while being close to quantitative in terms of efficiency at a collection level, are hardly applicable when extraction kinetics is under consideration.…”

Section: Introductionmentioning

confidence: 99%

On the Enhanced Accuracy of Kinetic Curve Building in Supercritical Fluid Extraction from Aroma Plants Using a New 3D-Printed Extract Collection Device

Прокопчук

Pokrovskiy

2020

Molecules

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Accurate collection of extracted material represents a technical problem in supercritical fluid extraction because trapping should be performed in severe conditions of rapidly moving and freezing expanded fluid. We have developed a simple device for effective sample collection in analytical-scale supercritical fluid extraction. The device consists of a cyclone separator equipped with a spray trap and a heated check valve. The cyclone separator and spray trap are manufactured from a light polymer via 3D printing and are quick-detachable, which encourages its use in applications where mass yield measurements are required. The device was compared to a standard tubing-and-vial approach in the task of building kinetic curves for the extraction from two aroma plants, namely, laurel and rosemary. The new device showed almost two-fold increase in extraction trapping, most probably due to better collection of volatile compounds. A curious effect of the number of mass measurement points per curve on apparent yield was observed. An increase in the number of points led to an increase in yield, probably due to the effect of the static–dynamic extract regime posed by the manner in which the device is used.

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Trapping efficiencies of various collection solvents after supercritical fluid extraction

Cited by 30 publications

References 13 publications

Bioanalytical Applications Using Supercritical Fluid Techniques

Bioanalytical Applications Using Supercritical Fluid Techniques

Statistical Analysis of Liquid Trapping Efficiencies of Fat-Soluble Vitamins Following Supercritical Fluid Extraction

On the Enhanced Accuracy of Kinetic Curve Building in Supercritical Fluid Extraction from Aroma Plants Using a New 3D-Printed Extract Collection Device

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