Metals accumulation in cultured tiger grouper Epinephelus fuscoguttatus with estimated weekly in take levels from East Coast of Peninsular Malaysia

Nik Nurasyikin Nik Mohmmad Azmi, . and Nurul Nadia Mohd Yusoff, . and Mohamad Sofi Abu Hassan, . and Siti Nurtahirah Jaafar, . Metals accumulation in cultured tiger grouper Epinephelus fuscoguttatus with estimated weekly in take levels from East Coast of Peninsular Malaysia. pp. 47-56. ISSN 1823-8556

This study focuses on quantifying metals concentration in muscles gills and livers of cultured tiger grouper Epinephelus fuscoguttatus. E. fuscoguttatus were sampled from the Semerak River Kelantan (n5) and the Setiu Wetland Terengganu (n20) in April and May 2016 respectively. The samples were digested according to microwave digestion method and analysed for iron (Fe) copper (Cu) zinc (Zn) lead (Pb) and nickel (Ni) using inductively coupled plasma-mass spectrometry Perkin Elmer Elan 9000 (ICP-MS). The bioaccumulation of metals (mg/kg dry weight) follows the order of Fe Zn Cu Ni Pb and the concentration trend significantly increased from muscle to gill to liver respectively (p0.05). Liver was found as a good bioindicator of Fe Cu and Zn accumulation in both study areas. In contrast Pb and Ni accumulation in E. fuscogutatus from Semerak River were found higher in muscle than liver with 2.481.99 mg/kg dry weight and 16.34.10 mg/kg dry weight respectively compared to 0.990.78 mg/kg dry weight and 2.471.42 mg/kg dry weight respectively. It suggests potential sources of Pb and Ni into the study area that deserved further investigation. Level of Fe Cu Zn Pb in E. fuscoguttatus were found below the standard permissible limit of Malaysian Food Regulation (MFR 1985) and World Health Organization (WHO 1989). The permissible limit for Ni is unavailable in MFR 1985 thus we have referred to WHO 1989. Level of Ni was found exceeding the WHO 1989 suggesting potential risk health effect on the consumer. However the Estimated Weekly Intake (EWI) values are below the established provisional tolerable weekly intake (PTWI) indicates that E. fuscoguttatus from aquaculture cage in selected areas are safe for human consumptions. Further monitoring should be conducted in Semerak River as Pb and Ni were found highly concentrated in non-target organ muscle.

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Abstract

This study focuses on quantifying metals concentration in muscles gills and livers of cultured tiger grouper Epinephelus fuscoguttatus. E. fuscoguttatus were sampled from the Semerak River Kelantan (n5) and the Setiu Wetland Terengganu (n20) in April and May 2016 respectively. The samples were digested according to microwave digestion method and analysed for iron (Fe) copper (Cu) zinc (Zn) lead (Pb) and nickel (Ni) using inductively coupled plasma-mass spectrometry Perkin Elmer Elan 9000 (ICP-MS). The bioaccumulation of metals (mg/kg dry weight) follows the order of Fe Zn Cu Ni Pb and the concentration trend significantly increased from muscle to gill to liver respectively (p0.05). Liver was found as a good bioindicator of Fe Cu and Zn accumulation in both study areas. In contrast Pb and Ni accumulation in E. fuscogutatus from Semerak River were found higher in muscle than liver with 2.481.99 mg/kg dry weight and 16.34.10 mg/kg dry weight respectively compared to 0.990.78 mg/kg dry weight and 2.471.42 mg/kg dry weight respectively. It suggests potential sources of Pb and Ni into the study area that deserved further investigation. Level of Fe Cu Zn Pb in E. fuscoguttatus were found below the standard permissible limit of Malaysian Food Regulation (MFR 1985) and World Health Organization (WHO 1989). The permissible limit for Ni is unavailable in MFR 1985 thus we have referred to WHO 1989. Level of Ni was found exceeding the WHO 1989 suggesting potential risk health effect on the consumer. However the Estimated Weekly Intake (EWI) values are below the established provisional tolerable weekly intake (PTWI) indicates that E. fuscoguttatus from aquaculture cage in selected areas are safe for human consumptions. Further monitoring should be conducted in Semerak River as Pb and Ni were found highly concentrated in non-target organ muscle.

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Item Type:	Article
AGROVOC Term:	Epinephelus
AGROVOC Term:	Groupers
AGROVOC Term:	Sampling
AGROVOC Term:	Laboratory experimentation
AGROVOC Term:	Digestion
AGROVOC Term:	Mass spectrometry
AGROVOC Term:	Muscles
AGROVOC Term:	Zinc
AGROVOC Term:	Lead
AGROVOC Term:	Nickel
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:29
URI:	http://webagris.upm.edu.my/id/eprint/24996

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