Relationship between the Change Rules of Volatile Organic Compounds in Rat Muscle and Postmortem Interval.
10.3969/j.issn.1004-5619.2017.02.003
- Author:
Bei Bei LIU
1
;
Zhi Yuan XIA
1
;
Jing Qi MA
1
;
Pu LI
1
;
Ping LÜ
1
;
Hai Mei ZHOU
1
Author Information
1. School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, China.
- Publication Type:Journal Article
- Keywords:
volatile organic compounds;
forensic pathology;
gas chromatography-mass spectrometry;
muscles;
postmortem interval;
rats;
solid phase microextraction
- MeSH:
Animals;
Autopsy;
Gas Chromatography-Mass Spectrometry/methods*;
Muscles/pathology*;
Rats;
Solid Phase Microextraction;
Volatile Organic Compounds/chemistry*
- From:
Journal of Forensic Medicine
2017;33(2):120-124
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVES:To explore the relationship between the change rules of volatile organic compounds （VOCs） in rat muscle and postmortem interval （PMI）.
METHODS:A total of 120 healthy rats were divided randomly into 12 groups （10 for each group）. After the rats were sacrificed by cervical dislocation, the bodies were kept at （25±1） ℃. Rat muscle samples were separately obtained at 12 PMI points, including 0, 0.5, 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 d. The VOCs in rat muscles were collected, detected and analyzed by headspace solid-phase microextraction （HS-SPME） coupled to gas chromatography-mass spectrometer （GC-MS）.
RESULTS:In total, 15 species of VOCs were identified, including 9 aromatic compounds, 3 sulfur compounds, 2 aliphatic acids and 1 heterocyclic compound. The species of VOCs increased with PMI： no species were detected within 1 day, 3 species were detected on day 2, 9 on day 3, 11 on day 4, 14 from day 5 to 7, and 15 from day 8 to 10. Total peak area of 15 species of VOCs was significantly correlated to PMI （adjusted R²=0.15-0.96）： the regression function was y=-17.05 x²+ 164.36 x-246.36 （adjusted R²=0.96） from day 2 to 5, and y=2.24 x+101.13 （adjusted R²=0.97） from day 6 to 10.
CONCLUSIONS:The change rules of VOCs in rat muscle are helpful for PMI estimation.
