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Related Experiment Videos

Immobilized enzyme reactors for detection systems in high-performance liquid chromatography.

K Shimada1, T Oe, T Nambara

  • 1Faculty of Pharmaceutical Sciences, Kanazawa University, Japan.

Journal of Chromatography
|August 11, 1989
PubMed
Summary

Immobilized-enzyme reactors (IMERs) enhance high-performance liquid chromatography (HPLC) detection by converting substrates into measurable products. While offering economic benefits, IMER stability and activity are challenged by mobile phase modifiers, requiring future improvements.

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Area of Science:

  • Analytical Chemistry
  • Biochemistry
  • Chemical Engineering

Background:

  • Immobilized-enzyme reactors (IMERs) are employed in high-performance liquid chromatography (HPLC) for sensitive detection.
  • This technique enzymatically converts detector-unresponsive substrates into highly responsive products.
  • Key analytes include steroids, conjugates, acetylcholine, choline, and amino acids.

Purpose of the Study:

  • To review the applications of IMERs in HPLC detection systems.
  • To highlight the economic advantages of using immobilized enzymes.
  • To identify challenges related to IMER stability and activity.

Main Methods:

  • Review of existing literature on HPLC-IMER applications.
  • Analysis of enzyme-substrate interactions and product detection.

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  • Evaluation of factors influencing IMER performance, such as mobile phase composition.

    • Main Results:

    • HPLC-IMER systems are effective for detecting various compounds, particularly in clinical chemistry.
    • Repetitive use of immobilized enzymes offers significant economic advantages.
    • IMER activity and stability are negatively impacted by organic modifiers in the mobile phase, with typical decreases observed within 2-3 months.

    Conclusions:

    • HPLC-IMER technology provides a valuable detection method with economic benefits.
    • Further research is needed to overcome challenges related to IMER operational stability and activity.
    • Expanding applications beyond clinical chemistry are anticipated with future developments.