Residues of organochlorine pesticides in vegetables marketed in Greater Accra Region of Ghana

Bempah, Crentsil Kofi; Buah-Kwofie, Archibold; Enimil, Ellis; Blewu, Beatrice; Agyei-Martey, Gladys

doi:10.1016/j.foodcont.2011.11.035

Cited by 74 publications

(37 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They accumulate in the environment and food [12] and their accumulation is still a major concern. Research data available have indicated the presence of pesticide residues in vegetables [13] [14] [15] [16]. The consumption of these vegetables containing pesticide residues could constitute major health risk to consumers.…”

Section: Introductionmentioning

confidence: 99%

Multi-Residue Levels of Persistent Organochlorine Pesticides in Edible Vegetables: A Human Health Risk Assessment

Adefemi¹,

Asaolu²,

Ibigbami³

et al. 2018

JACEN

View full text Add to dashboard Cite

Background: This study evaluates the quantitative assessment of persistent organochorine pesticide (OCPs) residues in vegetables (Senecio biafrae) from four selected cocoa plantations in Ekiti State, Nigeria. Methods: The pesticides were extracted from the vegetable samples by using USEPA 3500C method and later clean-up on activated silica gel. The pesticides residues in the samples were determined using Gas Chromatography coupled with Electron Capture Detector (GC-ECD). Results: The results showed that the analyzed samples were contaminated with ten OCPs. The mean OCPs concentration ranged from ND-0.399 mg/kg to ND-0.379 mg/kg during the wet and dry seasons respectively. α-BHC, β-BHC, p, p'-DDE, dieldrin, endrin, endosulfan sulphate and methoxychlor were not detected in the samples. Pesticides such as aldrin, endosulfan II, endrin aldehyde and heptachlor slightly exceeded their maximum residue limit. Conclusion: The hazard indices (HI) of heptachlor, endosulfan I, endosulfan II, aldrin, heptachlor-epoxide and p, p'-DDT exceeded 1 and thus pose likely potential non-carcinogenic health risk.

show abstract

Section: Introductionmentioning

confidence: 99%

Multi-Residue Levels of Persistent Organochlorine Pesticides in Edible Vegetables: A Human Health Risk Assessment

Adefemi¹,

Asaolu²,

Ibigbami³

et al. 2018

JACEN

View full text Add to dashboard Cite

show abstract

“…In Africa, pest control mainly relies on the use of chemical pesticides but this approach is not sustainable due to the development of resistance (Martin et al 2002;Carletto et al 2010;Houndété et al 2010;Agboyi et al 2016) as well as their impacts on the environment and on human health (Wilson and Tisdell 2001;De Bon et al 2014). Alarming studies in Ghana (Bempah et al 2012;Bempah et al 2016), Benin (Yehouenou et al, 2013), Senegal (Diop et al 2016) and in South Africa (Mutengwe et al 2016) highlight the risks Fig. 1 Diversity of protected cultivation techniques in SSA, plastic mulch on okras in Tanzania (a), organic mulch on African eggplants in Burundi (b), low insect proof nets tunnels on cabbages in Benin (c), shade nets on tomatoes in Senegal (d), tomato cultivation in a nethouse in Kenya (e) and cultivation of sweet peppers in a polyhouse in Tanzania (f) involved in consuming vegetables due to pesticide residues above the approved maximum residues levels (MLR).…”

Section: Introductionmentioning

confidence: 99%

Protected cultivation of vegetable crops in sub-Saharan Africa: limits and prospects for smallholders. A review

Nordey

Basset-Mens

Bon

et al. 2017

Agron. Sustain. Dev.

View full text Add to dashboard Cite

Vegetable production in sub-Saharan Africa faces numerous agronomic constraints that will have to be overcome to feed the increasing population and to fight malnutrition. Technology transfer and the adoption of low-tech protected cultivation techniques affordable for smallholders are believed to be able to meet this challenge. Protected cultivation techniques are a set of agricultural practices aimed at artificializing the crop environment through the use of soil covers and/or plant covers to control pests and climatic conditions. Although protected cultivation techniques may increase the yield and quality of vegetable crops and extend their production periods worldwide, the transfer of these techniques in sub-Saharan Africa raises questions about their agronomical performances, their profitability but also their environmental impacts. Are low-tech protected cultivation techniques adapted to the sustainable production of vegetables by smallholders in sub-Saharan Africa? To answer this question, we present an overview of the agronomic, economic, and environmental performances of low-tech protected cultivation techniques in sub-Saharan Africa as reported in the literature. The major conclusions that can be drawn from the review are (1) low-tech protected cultivation techniques are not suitable in all climatic conditions in sub-Saharan Africa and need to be combined with other methods to ensure adequate pest control, (2) the profitability of protected cultivation techniques relies on the capacity to offset increased production costs by higher yields and higher selling prices to be obtained with off-season and/or higher quality products, (3) breaking with existing cropping systems, the lack of technical support and skills, and the limited access to investment funding are major obstacles to the adoption of protected cultivation techniques by smallholders (4) life cycle assessments conducted in northern countries suggested that more efficient use of agricultural inputs would offset the negative impacts of protected cultivation techniques if they are properly managed, but further studies are required to be sure these results can be extrapolated to sub-Saharan Africa context. (Résumé d'auteur

show abstract

“…However, the use of several insecticides in urban agriculture cannot be underestimated particularly in the selection of DDT resistance. Several studies have found traces of organochlorine notably DDT in water, vegetables and fruits in different urban areas in Ghana (Ntow, 2001;Darko and Acquaah, 2007;Bempah and Donkor, 2011;Bempah et al, 2012), suggesting that these insecticides are still being used in agricultural settings.…”

Section: Discussionmentioning

confidence: 99%

DDT and pyrethroid resistance status and laboratory evaluation of bio-efficacy of long lasting insecticide treated nets against Culex quinquefasciatus and Culex decens in Ghana

et al. 2015

View full text Add to dashboard Cite

Residues of organochlorine pesticides in vegetables marketed in Greater Accra Region of Ghana

Cited by 74 publications

References 19 publications

Multi-Residue Levels of Persistent Organochlorine Pesticides in Edible Vegetables: A Human Health Risk Assessment

Multi-Residue Levels of Persistent Organochlorine Pesticides in Edible Vegetables: A Human Health Risk Assessment

Protected cultivation of vegetable crops in sub-Saharan Africa: limits and prospects for smallholders. A review

DDT and pyrethroid resistance status and laboratory evaluation of bio-efficacy of long lasting insecticide treated nets against Culex quinquefasciatus and Culex decens in Ghana

Contact Info

Product

Resources

About