Journal of Forensic Science and Medicine

ORIGINAL ARTICLE
Year
: 2017  |  Volume : 3  |  Issue : 3  |  Page : 111--114

Determining the electrical conductivity of rat cadaveric liver, spleen, and kidney to estimate early postmortem interval


Zhe Zheng, Xiandun Zhai, Zhiyuan Xia, Yaonan Mo 
 Department of Forensic Medicine, Forensic Medicine School, Henan University of Science and Technology, Luoyang, Henan, China

Correspondence Address:
Yaonan Mo
Forensic Medicine School, Henan University of Science and Technology, Luoyang, Henan
China

Previous research has found that electrical conductivity (EC), an important index to predict meat freshness and shelf life, is very promising for estimating the late postmortem interval (PMI). However, whether it has potential use in the early PMI has not been fully studied yet. To test this possibility in the present study, EC of three internal organs of rat liver, spleen, and kidney were determined within 24 postmortem hours, and then, EC changes at different PMIs were carefully analyzed. The overall results showed that EC of liver and spleen increased significantly with PMI while EC of kidney had minor changes during the same period. Specifically, significant linear positive correlations between EC of liver and spleen and PMI were found and the coefficients of their regression functions were R2 = 0.98 and R2 = 0.95, respectively. It can be concluded that determination of EC in certain internal organs such as liver and spleen may be a potential tool in the early PMI estimation. However, more researches on its influencing factors are needed to facilitate its final use in practice.


How to cite this article:
Zheng Z, Zhai X, Xia Z, Mo Y. Determining the electrical conductivity of rat cadaveric liver, spleen, and kidney to estimate early postmortem interval.J Forensic Sci Med 2017;3:111-114


How to cite this URL:
Zheng Z, Zhai X, Xia Z, Mo Y. Determining the electrical conductivity of rat cadaveric liver, spleen, and kidney to estimate early postmortem interval. J Forensic Sci Med [serial online] 2017 [cited 2022 Jun 24 ];3:111-114
Available from: https://www.jfsmonline.com/article.asp?issn=2349-5014;year=2017;volume=3;issue=3;spage=111;epage=114;aulast=Zheng;type=0