Start Aspartic acid racemization dating

Aspartic acid racemization dating

The levels of D- and L-aspartic acid were analyzed by ion exchange chromatography or reversed-phase HPLC.

DNA stability is a major complication in the analysis of ancient genetic material.

“ Amino acid racemization is simply an indicator of the level of degradation of DNA.

DNA degradation is difficult to quickly evaluate, and amino acid racemization is a proxy for this evaluation,” states Bada.

For samples not embedded in amber, this translates to less than 50,000 years.

This suggests that recovering DNA from dinosaur fossils, which are on the order of 10 million years old, is unlikely.

They needed scientific data, however, to prove the whales’ longevity.

Researchers turned to Jeffrey Bada and his colleagues at the Scripps Institution of Oceanography in La Jolla, CA, who are considered experts in the field of racemization analysis.

By measuring the progression of amino acid racemization in these samples, researchers can assess whether nucleic acid analysis would be productive.