IIARD International Institute of Academic Research and Development

INTERNATIONAL JOURNAL OF CHEMISTRY AND CHEMICAL PROCESSES (IJCCP )

E-I SSN 2545-5265
P- ISSN 2695-1916
VOL. 11 NO. 2 2025
DOI: 10.56201/ijccp.vol.11.no2.2025.pg37.44

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Health Risk of Consuming Dried Crayfish Sold in the Bayelsa State Markets, Nigeria

Erepamowei Young And Douye Parkinson Markmanuel

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Abstract

Despite the wide range of benefits (source of vitamin B, copper, selenium, protein, iron, zinc, and amino acids) we get for eating crayfish, it could still be harmful to humans if there are certain levels of heavy metal contaminants in them when consumed. In this paper, heavy metals were determined (using flame atomic absorption spectrophotometer) in dried crayfish obtained in Markets in Bayelsa State, Nigeria. Prior to this instrumental analysis, dried samples were acid- digested via standard analytical methods. The health risks of consuming these samples were also assessed by using standard methods such as Estimated Daily Intake, Hazard Quotient, Hazard Index, Risk Index. For both children and adult (with some exception), metals may not pose any health risk because the Estimated Daily Intake for all elements were less than the Rfd values. Also, the Hazard Quotients and Hazard Indices do not indicate any health risk because they were less than 1. The RI values of Cr in all samples were significant for both children and adults and Pb in all samples were insignificant for both children and adults. Cd and Ni in samples A - D were not computed because there concentrations were below detection limit. The RI values of Cd were significant in all samples except in sample E. The RI values of Cr were significant in all samples except in samples E and G. With the exception of few samples, the health risk assessments show that crayfish samples are safe for consumption.

keywords:

crayfish, Hazard, Quotient, Index

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References:

Adah, C. A., Asemave, K. and Odeh, J. O. (2013). Evaluation of Heavy Metal Levels in Crayfish,
Tilapia zilli and Clupea harengus from Nigeria. International Journal of Environment and
Bioenergy, 5 (5): 99 - 107.
Ahmad S. M., Birnin-Yauri U. A., Bagudo B. U., Sahabi D. M. (2013). Comparative analysis on
the nutritional values of crayfish and some insects, African Journal of Food Science and
Technology, 4 (1): 9-12
Akesson, A., Julian, B. and Wolk, A. (2008). Long term exposure to cadmium and postmenopausal
endometrial cancer incidence: A population based prospective cohort study. Cancer
research, 68 (7): 6435 - 6441.
Al-Ubaidi, A., Al-Janabi, Z., and Al-Kubaisi, A. (2014). Distribution of some heavy metals in
Tigris River in Central Iraq. Baghdad. Journal of Science and Environment. 11 (2): 983–
Balasubramanian, R. and Wang, L.K. (2009). "Control, Management, and Treatment of Metal
Emissions from Motor Vehicles". In Shammas, LK; Wang, JP; Chen, Y; et al. (eds.). Heavy
Metals in the Environment, CRC Press: 475–490
Gladys Guner, U (2010). Cadmium Bioaccumulation and Depuration by Freshwater Crayfish,
Astacus leptodactylus. Bulletin of Environmental Contamination and Toxicology, 19
(2):23-28.
Igbuku, A.U. (2015). Determination of Heavy Metals in Crayfish Sold in Selected Towns (Asaba,
Ozoro, Patani and Sapele), Delta State Nigeria. Journal of Sciences and Multidisciplinary
Research, 7 (52) 47 – 54.
Igbuku, A.U. (2015). DETERMINATION OF HEAVY METALS IN CRAYFISH SOLD IN
SELECTED TOWNS (Asaba, Ozoro, Patani and Sapele), DELTA STATE NIGERIA,
Journal of Sciences and Multidisciplinary Research, 7 (2), 47 – 54
James, L. (2011). Nickel as a heavy metal and it's health effects to man. Polish Journal of
environmental studies, 16 (32): 145-154.
Kirmani, M. N., Mohiuddin, S., and Zahir, E (2011). Determination of some toxic and essential
and trace elements in some medicinal and edible plants of karachi city. Journal of Basic
and Applied Sciences, 7 (7): 89-95
Kurun, A, Nuray, B, Melike, E., Hüsamettin, B, Abdullah, A and Mahmut, S (2009).
Determination of Total metal levels in crayfish Astacus leptodactylus. Journal of
Environmental Monitoring and Assessment 169, (169):385–396.
Pyary Anisha, Pulickal Santhosh Athira, Biju Anagha, Partheeban Emmanuel Charles,
Krishnamurthy Prabakaran, Rajendran Rajaram (2023). First report on occurrence of heavy
metals in dried fishes from major fishing villages in Kerala coast, Southwest India, Hygiene
and Environmental Health Advances 6, 1 – 8
Qian, P., Luís M. N., Ben K., Fei, D. and Huan, Z. (2015). Bioaccessibility-adjusted probabilistic
risk assessment. Journal of Environment International, 88 (17): 261–268
Shaban Abd El-Halim El-Sherif , Safwat Abd El-Ghafour (2015). Nutritive value of canned River
Nile Crayfish (Procambarus clarkii) products, Egyptian Journal of Aquatic Research, 41,
265 – 272
USEPA (United States Environmental Protection Agency) (2004). Risk Assessment Guidance for
Superfund Volume I: Human Health Evaluation Manual (Part E, Supplemental Guidance
for Dermal Risk Assessment), Final. Office of Superfund Remediation.
Victor Ighariemu, Matthew Owhonda Wegwu, and Lawrence Chijoke Chuku (2023). Evaluation
of Heavy Metals and Health Risk Assessment of Shellfish Contaminated in Santa Barbara
River, Niger Delta, Nigeria, Current Research in Interdisciplinary Studies 2(1): 1 – 20.
Waribo, A., Bartimaeus, E. and Onuoha, C. (2019). Assessment of Some Heavy Metal Content of
Dried Crayfish. Journal of Fisheries and Aquatic Research, 5(5): 1-6.
Waribo H. A., Bartimaeus E. S. and Onuoha I. C. (2019). Assessment of Some Heavy Metal
Content of Dried Crayfish Sold in Creek Road Market, Borokiri, Port Harcourt, Nigeria,
Asian Journal of Fisheries and Aquatic Research, 5(1), 1-6

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