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Genipin--a novel fingerprint reagent with colorimetric and fluorogenic activity
Joseph Almog1, Yaron Cohen, Myriam Azoury
1Casali Institute of Applied Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel. almog@vms.huji.ac.il
Journal of Forensic Sciences
|March 19, 2004
Summary
Genipin, derived from gardenia fruit, acts as a dual-action fingerprint reagent. This natural compound develops visible blue prints and enhances faint ones with fluorescence, offering a safe forensic tool.
Area of Science:
- Forensic Science
- Natural Product Chemistry
Background:
- Latent fingerprint detection is crucial in forensic investigations.
- Existing fingerprint reagents may have limitations in sensitivity, safety, or environmental impact.
Purpose of the Study:
- To evaluate genipin as a novel reagent for developing latent fingerprints.
- To assess the colorimetric and fluorogenic properties of genipin for fingerprint visualization.
Main Methods:
- Genipin, a hydrolytic product of geniposide from gardenia fruit, was used as a fingerprint reagent.
- Developed latent fingerprints on paper and assessed their contrast, resolution, and fluorescence.
Main Results:
- Genipin produced clear blue fingerprint impressions on paper with good contrast and resolution.
- Faint fingerprints fluoresced brightly under specific illumination (ca. 590 nm) and viewing conditions (barrier filter > 630 nm).
Conclusions:
- Genipin demonstrates significant potential as a colorimetric and fluorogenic fingerprint reagent.
- Its natural origin, safety, and environmental friendliness make it an attractive alternative for forensic applications.