Metal contaminants and chloramphenicol in litopenaeus vannamei and penaeus silasi at various supply chain stages in Johor Bahru, and their health risk assessment

Contamination by toxic metals and antibiotics (like chloramphenicol) in white shrimps can be detrimental to human health. Hence, this present research evaluated the concentrations of As, Pb, Cd and total Hg and chloramphenicol as prescribed by the Malaysian Food Act in Penaeus silasi and Litopenaeus...

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Main Author:	Anuar, Nurazira
Format:	Thesis
Language:	English
Published:	2022
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/102342/1/NuraziraAnuarMFS2022.pdf.pdf
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id	my-utm-ep.102342
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spelling	my-utm-ep.1023422023-08-17T01:15:27Z Metal contaminants and chloramphenicol in litopenaeus vannamei and penaeus silasi at various supply chain stages in Johor Bahru, and their health risk assessment 2022 Anuar, Nurazira TP Chemical technology Contamination by toxic metals and antibiotics (like chloramphenicol) in white shrimps can be detrimental to human health. Hence, this present research evaluated the concentrations of As, Pb, Cd and total Hg and chloramphenicol as prescribed by the Malaysian Food Act in Penaeus silasi and Litopenaeus vannamei shrimps sampled from the different supply chain stages. The sampling was made at landing sites, major markets and grocers in Johor Bahru, Johor, Malaysia during the six sampling intervals. A Perkin-Elmer Analyst PinAAcle 900T atomic absorption spectrometer equipped with graphite furnace (GFAAS) and autosampler was used for quantitating the concentrations of As, Pb, and Cd. A flow injection mercury/hydride system (FI-MHS) was utilized for analysing the total Hg. The results revealed the median As and Cd concentrations that ranged between below detection limit (bdl) - 167.5 mg/kg and bdl - 0.46 mg/kg, respectively. As for total Hg, the concentrations ranged between 0.02 - 1.13 mg/kg. Although Pb and chloramphenicol were not detected, As and total Hg concentrations varied significantly across the six sampling intervals (P < 0.05), exceeded the maximum permitted proportions prescribed by the Malaysian Food Act. Identified as P. silasi, shrimps from landing sites Mersing and Pontian had significantly higher As and total Hg concentrations than those of L. vannamei from major markets and their surrounding grocers (P < 0.05). Alarmingly, Hazard Index for P. silasi from landing sites Mersing and Pontian as well as L. vannamei from major markets and grocers exceeded 1.00. Hence, formulating suitable intervention programs and devising efficient removal technologies are paramount for benefiting the public at large. 2022 Thesis http://eprints.utm.my/id/eprint/102342/ http://eprints.utm.my/id/eprint/102342/1/NuraziraAnuarMFS2022.pdf.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:149313 masters Universiti Teknologi Malaysia Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Anuar, Nurazira Metal contaminants and chloramphenicol in litopenaeus vannamei and penaeus silasi at various supply chain stages in Johor Bahru, and their health risk assessment
description	Contamination by toxic metals and antibiotics (like chloramphenicol) in white shrimps can be detrimental to human health. Hence, this present research evaluated the concentrations of As, Pb, Cd and total Hg and chloramphenicol as prescribed by the Malaysian Food Act in Penaeus silasi and Litopenaeus vannamei shrimps sampled from the different supply chain stages. The sampling was made at landing sites, major markets and grocers in Johor Bahru, Johor, Malaysia during the six sampling intervals. A Perkin-Elmer Analyst PinAAcle 900T atomic absorption spectrometer equipped with graphite furnace (GFAAS) and autosampler was used for quantitating the concentrations of As, Pb, and Cd. A flow injection mercury/hydride system (FI-MHS) was utilized for analysing the total Hg. The results revealed the median As and Cd concentrations that ranged between below detection limit (bdl) - 167.5 mg/kg and bdl - 0.46 mg/kg, respectively. As for total Hg, the concentrations ranged between 0.02 - 1.13 mg/kg. Although Pb and chloramphenicol were not detected, As and total Hg concentrations varied significantly across the six sampling intervals (P < 0.05), exceeded the maximum permitted proportions prescribed by the Malaysian Food Act. Identified as P. silasi, shrimps from landing sites Mersing and Pontian had significantly higher As and total Hg concentrations than those of L. vannamei from major markets and their surrounding grocers (P < 0.05). Alarmingly, Hazard Index for P. silasi from landing sites Mersing and Pontian as well as L. vannamei from major markets and grocers exceeded 1.00. Hence, formulating suitable intervention programs and devising efficient removal technologies are paramount for benefiting the public at large.
format	Thesis
qualification_level	Master's degree
author	Anuar, Nurazira
author_facet	Anuar, Nurazira
author_sort	Anuar, Nurazira
title	Metal contaminants and chloramphenicol in litopenaeus vannamei and penaeus silasi at various supply chain stages in Johor Bahru, and their health risk assessment
title_short	Metal contaminants and chloramphenicol in litopenaeus vannamei and penaeus silasi at various supply chain stages in Johor Bahru, and their health risk assessment
title_full	Metal contaminants and chloramphenicol in litopenaeus vannamei and penaeus silasi at various supply chain stages in Johor Bahru, and their health risk assessment
title_fullStr	Metal contaminants and chloramphenicol in litopenaeus vannamei and penaeus silasi at various supply chain stages in Johor Bahru, and their health risk assessment
title_full_unstemmed	Metal contaminants and chloramphenicol in litopenaeus vannamei and penaeus silasi at various supply chain stages in Johor Bahru, and their health risk assessment
title_sort	metal contaminants and chloramphenicol in litopenaeus vannamei and penaeus silasi at various supply chain stages in johor bahru, and their health risk assessment
granting_institution	Universiti Teknologi Malaysia
granting_department	Faculty of Science
publishDate	2022
url	http://eprints.utm.my/id/eprint/102342/1/NuraziraAnuarMFS2022.pdf.pdf
_version_	1776100900532649984

Metal contaminants and chloramphenicol in litopenaeus vannamei and penaeus silasi at various supply chain stages in Johor Bahru, and their health risk assessment

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