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Gelatinization with formic acid.

R W Wyckoff1, F D Davidson

  • 1Duval Corporation, University of Arizona, Tucson 85721.

Comparative Biochemistry and Physiology. B, Comparative Biochemistry
|January 1, 1979
PubMed
Summary
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Researchers analyzed gelatins from fresh and fossil collagens using formic acid. Peptide composition revealed significant aspartic acid and reduced glycine levels in solubilized collagens.

Area of Science:

  • Biochemistry
  • Paleontology
  • Materials Science

Background:

  • Collagen is a crucial structural protein found in connective tissues.
  • Understanding collagen degradation and composition is vital for various scientific fields.
  • Fossil collagens offer insights into ancient biological structures and diagenesis.

Purpose of the Study:

  • To investigate the peptide composition of gelatins derived from fresh and fossil collagens.
  • To determine the effects of dilute formic acid treatment on collagen solubilization.
  • To quantify amino acid differences, specifically aspartic acid and glycine, in treated collagens.

Main Methods:

  • Treatment of fresh and fossil collagens with dilute formic acid.
  • Separation and analysis of resulting peptides using polyacrylamide gel filtration.

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  • Quantification of specific amino acids, aspartic acid and glycine, released during solubilization.

    • Main Results:

    • Gelatins were successfully obtained from both fresh and fossil collagen sources.
    • Polyacrylamide gel filtration effectively separated and characterized the peptide compositions.
    • Solubilization released substantial amounts of aspartic acid and reduced quantities of glycine.

    Conclusions:

    • Formic acid treatment yields distinct gelatin peptide profiles from different collagen sources.
    • The observed amino acid variations (aspartic acid, glycine) may reflect collagen diagenesis or intrinsic differences.
    • This study provides a method for characterizing ancient collagenous materials.