Forensic Medical Capacities of Research of Saliva Stains on Physical Evidence after Washing
Authors: Saule Mussabekova
Recent advances in genetics have allowed increasing acutely the capacities of the formation of reliable evidence in conducting forensic examinations. Thus, traces of biological origin are important sources of information about a crime. Currently, around the world, sexual offenses have increased, and among them are those in which the criminals use various detergents to remove traces of their crime. A feature of modern synthetic detergents is the presence of biological additives - enzymes. Enzymes purposefully destroy stains of biological origin. To study the nature and extent of the impact of modern washing powders on saliva stains on the physical evidence, specially prepared test specimens of different types of tissues to which saliva was applied have been examined. Materials and Methods: Washing machines of famous manufacturers of household appliances have been used with different production characteristics and advertised brands of washing powder for test washing. Over 3,500 experimental samples were tested. After washing, the traces of saliva were identified using modern research methods of forensic medicine. Results: The influence was tested and the dependence of the use of different washing programs, types of washing machines and washing powders in the process of establishing saliva trace and identify of the stains on the physical evidence while washing was revealed. The results of experimental and practical expert studies have shown that in most cases it is not possible to draw the conclusions in the identification of saliva traces on physical evidence after washing. This is a consequence of the effect of biological additives and other additional factors on traces of saliva during washing. Conclusions: On the basis of the results of the study, the feasibility of saliva traces of the stains on physical evidence after washing is established. The use of modern molecular genetic methods makes it possible to partially solve the problems arising in the study of unlaundered evidence. Additional study of physical evidence after washing facilitates detection and investigation of sexual offenses against women and children.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1130175Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 953
 L.A. Revnitskaya, T.V. Ivanina, A.A. Ivanina. "The role of the forensic examination of physical evidence in the investigation of sexual crimes" / Forensic-medical examination, 2014, №6, рр.18-21. (In Russ)
 G.B. Deryagin. "Forensic medical examination in cases of unlawful sexual conduct" / Forensic-medical examination, 2006, №5, рр. 18-23. (In Russ)
 Bass M.S. "The probative value of the forensic" / The researchers note. Topical issues of improving legislation in the sphere of protection of the rights and freedoms of man and citizen: Sat. scientific. works. - Orenburg: "University", 2013, Vol. 9, рр. 388–396. (In Russ)
 V.L. Sidorov, T.V. CHerepanova, O.V. Spiridonova. "Establishing the presence of saliva stains on the material evidence"/ Forensic-medical examination, 2010, №2, рр.71-75. (In Russ)
 V. YU. Aleksandrova. "Immunological methods in complex analysis of microscopic forensic biological examination" / Dissertation of the candidate of medical sciences. M., 2008. 18р. (In Russ)
 C.B. Gurtovaya. "To a question about the possible effects of various detergents on the definition of specific and blood group" / Collected works of doctors of forensic biologists, M., 2007, рр. 16-19. (In Russ)
 K. Virkler, I. Lednev. "Forensic body fluid identification: The Raman spectroscopic signature of saliva" The Analyst, 135 (3) doi: 10.1039/b919393f
 Vdovina O.P. "To a question about the concept of a microscopic object in forensics" / Scientific works of the Russian Academy of lawyers and notaries. – M., 2012, рр. 105–108. (In Russ)
 Bushuev V.V., Ponomarenko E.V. "Modern possibilities of expert human identification" / Forensics: Russian and international experience: Materials of the International II. Scientific-Practical. Conf. (Volgograd, 21-22 May 2014). – Volgograd, Russia, 2014, рр. 27–31. (In Russ)
 Marielle Vennemann, Antje Koppelkamma. "mRNA profiling in forensic genetics I: Posibilities and limitations" /Forensic Science International Forensic Science International 203 (2010) 71–75 journal homepage: www.elsevier .com/ locate / forsciint.
 Kelly Virkler, Igor K. Lednev. "Analysis of body fluids for forensic purposes: From laboratory testing to non-destructive rapid confirmatory identification at a crime scene" / Forensic Science International 188 (2009) 1–17 journal homepage: www.elsevier .com/ locate / forsciint.
 Sood S., Bhargava M, Rathore P. "Saliva: An Expert Witness" / International Journal of Science and Research (IJSR) ISSN (Online): 2319-7064 Index Copernicus Value (2013): 6.14 | Impact Factor (2013): 4.438.
 Sun F, Reichenberger EJ. "Saliva as a source of genomic DNA for genetic studies: review of current methods and applications". Oral Health Dent Manag 2014; 13: 217-22.
 A. G. Smolyanitsky, A. I. Smolyanitskaja, M. V. Majatskaja, G. I. Zaslavsky. "Genetic identification of saliva traced on material evidences". Tom 4, ST. X (sc. X) // Aprel', 2003 god, Leningrad Regional Bureau of Forensic Medical Examination, Saint Petersburg, Russia. (In Russ)