Study on individual characterization of sweat components

개체별 땀의 성분분포에 관한 연구

  • Choi, Mi Jung (Dept. of Scientific Criminal Investigation, Chungnam National University) ;
  • Ha, Jaeho (Korea Food Research Institute) ;
  • Yoo, Seok (Hazard Evaluation Center, Korea Testing & Research Institute) ;
  • Park, Sung Woo (Dept. of Scientific Criminal Investigation, Chungnam National University)
  • 최미정 (충남대학교 과학수사학과) ;
  • 하재호 (한국식품연구원) ;
  • 유석 (한국화학시험연구원) ;
  • 박성우 (충남대학교 과학수사학과)
  • Received : 2007.08.30
  • Accepted : 2007.10.05
  • Published : 2007.10.25

Abstract

The aim of this paper is to investigate composition of fatty acids in sweat on purpose of latent fingerprint detectant developing and crime evidence searching. Fingerprint from 5 male donors (aged 29-50 years) were collected. We identified fatty acid components on sweat using methylester mixture (37species) as standard fatty acid and analyzed them by GC-FID. As donor was aged, the level of total fat was found to decrease markedly (aged 20-30 years: 56.4-72.0 %, aged 50 years : 32.4-45.4 %). We identifided 28 species fatty acid, primarilly C16:0(palmitic acid), C16:1 (palmitoleic acid), C18:1n9c(oleic acid), C18:0 (stearic acid), C14:0 (tetradecanoic acid) and all sweats were found to contain C12:0 (lauric acid), C15:0 (pentadecanoic acid), C18:2n6c (linoleic acid), C18:2n6t (linolelaidic acid), C20:0 (arachidic acid), C24:0/C20:5n3 (lignoceric acid/eicosapentaenoic acid), but with differing frequencies and at varying levels. C14:1 (myristoleic acid), C15:1 (pentadecenoic acid), C21:0 (heneicosanoic acid), C22:1n9 (erucic acid) were often observed in sample. Ratio of saturated and unsaturated fatty acid was from 0.94:1 to 2.6:1. And decrease of total fatty acids components caused by loss of saturated fatty acid and monounsaturated fatty acid. In case of sweat amino acids, we detected serine ($0-31.9{\mu}L/mL$), threonine ($0-26.2{\mu}L/mL$), glycine ($0-18.9{\mu}L/mL$) and 20-30 years old, highly protein intake ratio individuals increased (10 times) than 50 years old. We observed greatly individual characterization of amino acid compounds in sweat.

Acknowledgement

Supported by : 충남대학교

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