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Rapid robust separation of hydroxyproline and proline.
1Marion Merrell Dow, Inc., Kansas City, Missouri 64134-0627.
Analytical Biochemistry
|May 1, 1992
Summary
This study introduces a rapid method to identify collagen and collagen peptides by measuring hydroxyproline and proline levels. The assay uses sequential pre-derivatization and high-performance liquid chromatography for accurate collagen analysis.
Area of Science:
- Biochemistry
- Analytical Chemistry
- Chromatography
Background:
- Collagen and collagen peptides are crucial biomolecules identified by specific amino acid content.
- Accurate quantification of hydroxyproline and proline is essential for collagen analysis.
Purpose of the Study:
- To develop a rapid and sensitive assay for the identification and quantification of hydroxyproline and proline.
- To specifically detect collagen and collagen peptides in amino acid hydrolysates.
Main Methods:
- Sequential pre-derivatization of amino acid hydrolysates using o-phthalaldehyde and 9-fluorenylmethyl chloroformate.
- In-line high-performance liquid chromatography (HPLC) with reversed-phase separation on a C-18 ODS Hypersil column.
- Detection of derivatized amino acids at picomole per microliter concentrations.
Main Results:
- Successful resolution of hydroxyproline and proline from primary amino acids within 2.0 and 2.8 minutes, respectively.
- High sensitivity detection of hydroxyproline and proline at picomole levels.
- The complete assay achieved a rapid turnaround time of 10.75 minutes.
Conclusions:
- The developed HPLC method accurately and efficiently identifies collagen and collagen peptides.
- This assay provides a valuable tool for biochemical and food analysis requiring collagen characterization.
- The method's speed and sensitivity make it suitable for high-throughput analysis.