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Sample Preparation for Analysis: Advanced Techniques01:08

Sample Preparation for Analysis: Advanced Techniques

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Accurate analysis of complex samples often requires advanced preparation techniques to achieve reliable and reproducible results. Samples containing inorganic or organic materials can be challenging to dissolve or decompose effectively. Standard sample preparation methods include acid digestion, fusion, dry ashing, and wet digestion.
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...
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Capillary Electrophoresis: Applications01:30

Capillary Electrophoresis: Applications

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Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
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Updated: Oct 12, 2025

Preparation of Binary and Ternary Deep Eutectic Systems
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Deep Eutectic Solvents Application in Food Analysis.

Cecilia Ortega-Zamora1, Javier González-Sálamo1,2,3, Javier Hernández-Borges1,2

  • 1Departamento de Química, Unidad Departamental de Química Analítica, Facultad de Ciencias, Universidad de La Laguna (ULL), Avda. Astrofísico Fco. Sánchez, s/n., 38206 San Cristóbal de La Laguna, Spain.

Molecules (Basel, Switzerland)
|November 27, 2021
PubMed
Summary

Deep eutectic solvents (DESs) offer a greener alternative for analytical chemistry sample preparation, especially natural DESs (NADESs). Their properties are key for effective, environmentally friendly extraction in food analysis.

Keywords:
deep eutectic solventsfood analysisgreen sample preparationsolvent-based extraction techniques

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Area of Science:

  • Analytical Chemistry
  • Green Chemistry
  • Separation Science

Background:

  • Analytical Chemistry trends emphasize sustainable and environmentally friendly procedures.
  • Sample preparation remains a challenge despite instrumental advances in green methodologies.
  • Deep Eutectic Solvents (DESs) emerge as promising alternatives to traditional organic solvents due to low toxicity and biodegradability.

Purpose of the Study:

  • To review the applications and limitations of DESs in solvent-based extraction techniques for food analysis.
  • To highlight the significance of DESs' hydrophobic or hydrophilic nature in extraction efficiency.
  • To explore the potential of natural DESs (NADESs) in developing greener analytical methods.

Main Methods:

  • Review of literature on DES applications in solvent-based extraction.
  • Analysis of DES properties, including hydrophobicity/hydrophilicity, relevant to extraction.
  • Focus on extraction techniques within food analysis.

Main Results:

  • DESs, particularly NADESs, show significant potential for greener analytical methodologies.
  • The physicochemical properties of DESs, such as polarity, influence their effectiveness in extraction.
  • Understanding the hydrophobic/hydrophilic balance of DESs is crucial for optimizing extraction from complex food matrices.

Conclusions:

  • DESs represent a viable and sustainable approach to sample preparation in analytical chemistry.
  • Further research into tailoring DES properties is needed to maximize their utility in food analysis.
  • The adoption of DESs contributes to the development of more environmentally conscious analytical practices.