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Raman Spectra and Ancient Life: Vibrational ID Profiles of Fossilized (Bone) Tissues
Zuzana Jurašeková1, Gabriela Fabriciová1, Luis F Silveira2
1Department of Biophysics, Faculty of Science, Pavol Jozef Šafárik University in Košice, Jesenná 5, 04154 Košice, Slovakia.
International Journal of Molecular Sciences
|September 23, 2022
Summary
Raman micro-spectroscopy reveals organic molecules in fossilized vertebrate tissues from the Mesozoic era. This technique aids in identifying ancient biomolecules and understanding fossilization processes.
Area of Science:
- Paleontology
- Analytical Chemistry
- Biogeochemistry
Background:
- Raman micro-spectroscopy is a non-destructive technique for molecular identification.
- Chemical imaging is increasingly used for analyzing fossil trace elements and organic markers.
- Raman spectroscopy offers insights into bone microstructure and diagenetic alterations.
Purpose of the Study:
- To investigate the potential of Raman micro-spectroscopy for analyzing fossilized vertebrate tissues.
- To identify spectral features of organic residues in Mesozoic fossils.
- To discuss the origin and challenges of defining spectral markers for ancient organic matter.
Main Methods:
- Application of Raman micro-spectroscopy to diverse fossilized vertebrate tissues (Mesozoic era).
- Analysis of spectral data, focusing on the 1200-1800 cm-1 range.
- Comparison of fossil spectra with sedimentary rock and potential organic molecule signatures.
Main Results:
- Observed Raman spectra from fossil tissues exhibit features in the 1200-1800 cm-1 range.
- These spectral features suggest the presence of proteins, nucleic acids, and other organic molecules.
- Identified spectral bands potentially originate from ancient organic residues.
Conclusions:
- Raman micro-spectroscopy is a valuable tool for identifying organic molecules in fossilized tissues.
- Further research is needed to overcome challenges in defining specific spectral markers for ancient organic residues.
- The study contributes to understanding the preservation and diagenesis of organic matter in fossils.
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