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Related Experiment Videos

Micro-analysis of amino acids

R A Boykins, T Y Liu

    Journal of Biochemical and Biophysical Methods
    |December 1, 1982
    PubMed
    Summary

    A new automated amino acid analyzer achieves picomole-level sensitivity for routine amino acid analysis. This high-performance liquid chromatography method offers accuracy and reproducibility comparable to traditional techniques.

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    Area of Science:

    • Analytical Chemistry
    • Biochemistry
    • Chromatography

    Background:

    • Amino acid analysis is crucial in various scientific fields.
    • Existing methods may lack sensitivity or require complex procedures.
    • Picomole-level detection is desirable for analyzing biological samples.

    Purpose of the Study:

    • To develop an automated system for sensitive amino acid analysis.
    • To achieve picomole-level detection limits for routine amino acid quantification.
    • To provide a reproducible and accurate analytical method.

    Main Methods:

    • Development of an automated amino acid analyzer.
    • Utilizing o-phthalaldehyde with 2-mercaptoethanol for fluorometric detection.
    • Employing post-column reaction with sodium hypochlorite for oxidation.
    • Using high-performance liquid chromatography (HPLC) pumps with micro-flow rates.

    Main Results:

    • Achieved sensitivity at the 10-100 pmol level for most amino acids.
    • Proline detection required >50 pmol.
    • Demonstrated reproducibility and accuracy comparable to ninhydrin-based methods.
    • The system is suitable for routine analyses.

    Conclusions:

    • The developed automated analyzer provides sensitive and reliable amino acid quantification.
    • This method enables routine analysis of amino acids at picomole levels.
    • The system offers an efficient alternative to existing amino acid analysis techniques.

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