Rapid Imaging of Latent Fingerprints Using Xanthone Compounds on Silica Nanoparticles Detected by UV Spectrophotometry

Xanthone is the phytochemical which is extracted from the Garcinia mangostana. Xanthone components have yellow color and absorption in the wavelength in 254 and 366 nm and detected by the ultraviolet spectrophotometer. Garcinia mangostana is the plant growth in the east and south of Thailand, peel of the fruit has many xanthone. Extracted of the peel with water: ethanol (1:1) gave xanthone components, and have yellow color when stained on the paper or skin cannot remove it with water. The experiments used the extracted of xanthone components developing on the Silica Nanoparticles (SNP-X). The xanthone covered on the porous of Silica Nanoparticles which have binding affinity on the latent fingerprints (LFPs) detection. The simple preparation and easy controls of the surface properties of SNP-X showed the potential on the UV absorption labeling compounds for enhanced the latent fingerprint detection in forensic science for individual identification.