Dietary Exposure to Heavy Metal Contaminated Rice and Health Risk to the Population of Monrovia

Gomah, Lenn G; Ngumbu, R. S.; Voegborlo, R. B.

doi:10.26502/jesph.96120077

Cited by 8 publications

(4 citation statements)

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“…The continuous use of heavy metal contaminated rice endangers human health due to the bioaccumulation of heavy metals in the body (Zulkafflee et al, 2019). Chronic exposure to heavy metals causes cancer, learning disabilities, skin lesions, abdominal pain, diarrhoea, diabetes, hypertension, respiratory disorders and cardiovascular diseases; hence making it a public health concern (Abtahi et al, 2017;Gomah et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Food Safety Knowledge, Attitudes and Practices of Food Handlers along the Rice Value Chain of Uganda

Namubiru¹,

Male²,

Mukisa³

et al. 2022

JFI

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Food handlers play a critical role in controlling food contamination from “farm to fork”. Therefore, inadequate knowledge, poor attitudes and improper practices by food handlers pose a serious challenge to food safety. The aim of this study was to assess the knowledge, attitudes, and practices (KAP) of food handlers along the rice value chain of Uganda with the view of understanding factors that influence contamination of rice with aflatoxins, heavy metals and pesticides. A cross-sectional study, using a structured questionnaire through face-to-face interviews with 252 respondents was conducted in Butaleja, Gulu, Hoima, Kampala, Mutukula, Mbale and Mbarara districts. Categorical data was expressed as frequencies and percentages. The unique predictors of the KAP of rice handlers were defined using multivariate linear regression analysis. About 221 (87.7%) food handlers knew about the occurrence and causes of aflatoxins contamination in rice. Changes in colour (81.7%) and a musty smell (82.9%) were perceived to indicate the presence of aflatoxins. The main pre- and post-harvest aflatoxin preventative practices identified were growing resistant rice varieties (82.9%) and proper drying (79.8%). Food handlers were generally not knowledgeable (73.4%) about heavy metal contamination in rice. All food handlers used pesticides; however, 68.3% had never received formal training in pesticide use. Majority (86.1%) of food handlers were aware of the harmful effects of pesticides but on the contrary, this did not significantly change their practices towards safe pesticide use. At multivariate level, education was the unique predictor for aflatoxins and heavy metal contamination. Pesticide contamination was mainly influenced by district of residence. Therefore, appropriate educational programs organized to train food handlers can promote food safety in the rice value chain of Uganda. Interventions by regulatory agencies to strengthen enforcement of laws related to contaminants through regular surveillance at the farm and retail outlets are necessary to ensure compliance by food handlers.

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Section: Introductionmentioning

confidence: 99%

Food Safety Knowledge, Attitudes and Practices of Food Handlers along the Rice Value Chain of Uganda

Namubiru¹,

Male²,

Mukisa³

et al. 2022

JFI

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“…In Equation ( 4), q e is the amount of metal ion (adsorbate) adsorbed at equilibrium in mg/g, n is Freundlich constant which indicate adsorption intensity (dimensionless), C e is the concentration of metal ion at equilibrium in mg/l and K f is Freundlich constant which shows adsorption capacity in l/g. (5) In Equation ( 5), K L is the Langmuir equilibrium constant in l/mg, q m is the monolayer adsorption capacity at equilibrium in mg/g while q e and C e have same meaning as previously explained.…”

Section: Adsorption Isotherm Studiesmentioning

confidence: 99%

“…Consumption of food items containing heavy metals has long been identified to have numerous effects on human health [4][5][6]. Heavy metals bio-accumulate in both plants and animals [7] hence if discharged into streams and rivers, it could be incorporated into planktons and fishes which will consequently affect humans through the food chain.…”

Section: Introductionmentioning

confidence: 99%

Biosorption of Ni2+ and Cr3+ in synthetic sewage: Adsorption capacities of water hyacinth (Eichhornia crassipes)

Ogbozige

Nwobu

2021

Environmental Research and Technology

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Water hyacinth (Eichhornia crassipes) is an aquatic weed that is causing numerous adverse effects on freshwater bodies. Developing countries are still battling on how to control the growth of this weed without damaging other aquatic lives important to man. Literatures have revealed that most developing countries are still discharging untreated sewage containing heavy metals into waterbodies due to economic and technical constraints in handling conventional methods of treating heavy metals. Hence, the research investigated the possibility of using water hyacinth to adsorb heavy metals (Ni 2+ and Cr 3+ ) from sewage before discharging into waterbodies in order to solve two major problems faced in the aquatic environment, at minimal cost. This was achieved by using the said weed (water hyacinth) to treat Ni 2+ and Cr 3+ solutions prepared in the lab. Results showed that the adsorption process for both ions occurred on heterogeneous surfaces while the mechanism of adsorption followed Pseudo 2 nd -order kinetics. The Freundlich, Langmuir and Temkin adsorption capacities for Ni 2+ are 19.6925l/g, 0.7470l/mg and 1.1093l/mg respectively while for Cr 3+ are 16.814l/g, 0.7011l/mg and 0.9623l/mg respectively. However, the heat of sorption for Ni 2+ is 96.906KJ/mol while that of Cr 3+ is 98.749KJ/mol. Furthermore, FT-IR analysis identified seven functional groups involved in the binding sites with more of hydroxyl group (O-H) from alcohol and carboxylic acid. It was concluded that water hyacinth could be used as a potential bio-adsorbent of metal ions.

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“…Deficiency of copper in the diet can cause symptoms such as anaemia, neutropenia and bone abnormalities and Menkes disease. Conversely, an excess of copper may lead to the development of Wilson disease [29].…”

Section: Quality Assessmentmentioning

confidence: 99%

Evaluation of Soil and Groundwater Quality at the New Georgia Open Dumpsite in Caldwell, Liberia

F¹,

G²,

S³

et al. 2021

J Soil Water Sci

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Open dumpsite has been considered as one of the major sources of soil contamination and subsequently groundwater pollution. According to research [5][6][7], the emanation of leachate containing organic and inorganic matters and heavy metals from an open dumpsite can infiltrate subsurface and subsequently pollutes groundwater. The level of a consequent pollution depends on the concentration and toxicity of

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Dietary Exposure to Heavy Metal Contaminated Rice and Health Risk to the Population of Monrovia

Cited by 8 publications

References 0 publications

Food Safety Knowledge, Attitudes and Practices of Food Handlers along the Rice Value Chain of Uganda

Food Safety Knowledge, Attitudes and Practices of Food Handlers along the Rice Value Chain of Uganda

Biosorption of Ni2+ and Cr3+ in synthetic sewage: Adsorption capacities of water hyacinth (Eichhornia crassipes)

Evaluation of Soil and Groundwater Quality at the New Georgia Open Dumpsite in Caldwell, Liberia

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