University of Amsterdam, Biomedical Engineering and Physics, Academic Medical Center, P.O. Box 22700, 1100 DE, Amsterdam, The Netherlands.
Forensic Sci Int. 2012 Oct 10;222(1-3):89-93. doi: 10.1016/j.forsciint.2012.05.004. Epub 2012 Jun 1.
The autofluorescence of fingermarks is used for their detection. The components responsible for this autofluorescence are largely unknown. Thin layer chromatography and fluorescence spectroscopy were used to identify autofluorescent components and evaluate their forensic value. Based on our results, tryptophan is hypothesized to be a major contributor to the autofluorescence when part of peptides or proteins, id est, not in its free form. Part of the autofluorescence could be assigned to a kynurenine derivative. Pheophorbide A, a metabolite of chlorophyll, is inferred as a red fluorescent fingermark component. Chlorophyll is a plant pigment which implies that dietary information can potentially be retrieved from fingermarks.
指纹的自发荧光被用于其检测。负责这种自发荧光的成分在很大程度上是未知的。薄层层析和荧光光谱法被用于鉴定自发荧光成分并评估其法医学价值。根据我们的结果，色氨酸假设在部分肽或蛋白质中，即不是在其游离形式中，是自发荧光的主要贡献者。部分自发荧光可能归因于犬尿氨酸衍生物。原卟啉 A，叶绿素的代谢物，被推断为红色荧光指纹成分。叶绿素是一种植物色素，这意味着饮食信息可能潜在地从指纹中获取。
