Microbial phospholipid fatty acid distribution associated with pig fatty tissue buried in oil palm plantation soil

Nur Anisah Daud, . and Siti Sofo Ismail, . Microbial phospholipid fatty acid distribution associated with pig fatty tissue buried in oil palm plantation soil. pp. 39-46. ISSN 1823-8556

Estimation of postmortem interval (PMI) is one of the challenges faced in forensic investigations. Such difficulty is caused by the influence of environmental factors towards decomposition process. Thus it is crucial to conduct this study to investigate the concentration of phospholipid fatty acids in associated carrion soils as one of the forensic markers. A simulated burial experiment was carried out in controlled laboratory. The fatty flesh of a commercial pig (Sus scrofa) was buried in an oil palm plantation soil mimicking a burial in a shallow grave. The fatty flesh was allowed to decompose for 365 days of burial period. The associated soil was collected at each designated sampling point representing each decomposition stage. The associated soil was analysed in an attempt to identify the concentration of phospholipids fatty acids in the soil. The saturated fatty acid (SAFA) was found to have the highest concentration i.e. 312.94 mg/g soil dry weight. Furthermore the associated soils demonstrated a significant different (p0.05) in the concentration of phospholipids fatty acids (PLFAs) between decomposition days. The saturated PLFAs of palmitic acid (C16:0) demonstrated the highest concentration followed by stearic acid (C18:0) acids. These PLFA components also exhibited a significant different (p0.05) in concentration between decomposition days. The concentration of microbial PLFAs in burial environments may indicate the potential of microbial PLFAs to be developed as a useful tool to estimate post-mortem interval.

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Abstract

Estimation of postmortem interval (PMI) is one of the challenges faced in forensic investigations. Such difficulty is caused by the influence of environmental factors towards decomposition process. Thus it is crucial to conduct this study to investigate the concentration of phospholipid fatty acids in associated carrion soils as one of the forensic markers. A simulated burial experiment was carried out in controlled laboratory. The fatty flesh of a commercial pig (Sus scrofa) was buried in an oil palm plantation soil mimicking a burial in a shallow grave. The fatty flesh was allowed to decompose for 365 days of burial period. The associated soil was collected at each designated sampling point representing each decomposition stage. The associated soil was analysed in an attempt to identify the concentration of phospholipids fatty acids in the soil. The saturated fatty acid (SAFA) was found to have the highest concentration i.e. 312.94 mg/g soil dry weight. Furthermore the associated soils demonstrated a significant different (p0.05) in the concentration of phospholipids fatty acids (PLFAs) between decomposition days. The saturated PLFAs of palmitic acid (C16:0) demonstrated the highest concentration followed by stearic acid (C18:0) acids. These PLFA components also exhibited a significant different (p0.05) in concentration between decomposition days. The concentration of microbial PLFAs in burial environments may indicate the potential of microbial PLFAs to be developed as a useful tool to estimate post-mortem interval.

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Item Type:	Article
AGROVOC Term:	Oil palm
AGROVOC Term:	Plantations
AGROVOC Term:	Decomposition
AGROVOC Term:	Laboratory experimentation
AGROVOC Term:	Pigs
AGROVOC Term:	Sus scrofa
AGROVOC Term:	Fatty tissue
AGROVOC Term:	Environmental factors
AGROVOC Term:	Soil analysis
AGROVOC Term:	Laboratory experimentation
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:29
URI:	http://webagris.upm.edu.my/id/eprint/24995

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