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The rapid degradation of Lambda-Cyhalothrin makes treated vegetables relatively safe for consumption

dc.contributor.authorDjouaka, R.
dc.contributor.authorSoglo, M.
dc.contributor.authorKusimo, M.O.
dc.contributor.authorAdéoti, R.
dc.contributor.authorTalom, A.
dc.contributor.authorZeukeng, F.
dc.contributor.authorParaïso, A.
dc.contributor.authorAfari-Sefa, Victor
dc.contributor.authorSaethre, M.G.
dc.contributor.authorManyong, Victor M.
dc.contributor.authorTamò, M.
dc.contributor.authorWaage, Jeff
dc.contributor.authorLines, J.
dc.contributor.authorMahuku, George S.
dc.date.accessioned2019-12-04T11:19:15Z
dc.date.available2019-12-04T11:19:15Z
dc.date.issued2018-07-20
dc.identifier.citationDjouaka, R., Soglo, M.F., Kusimo, M.O., Adéoti, R., Talom, A., Zeukeng, F., ... & Tamò, M. (2018). The rapid degradation of Lambda-Cyhalothrin makes treated vegetables relatively safe for consumption. International Journal of Environmental Research and Public Health, 15(7): 1536, 1-17.
dc.identifier.issn1660-4601
dc.identifier.urihttps://hdl.handle.net/20.500.12478/3428
dc.descriptionOpen Access Journal; Published online: 20 July 2018
dc.description.abstractLambda-cyhalothrin (λ-cyhalothrin) is the most commonly used pyrethroid insecticide for vegetable farming in Benin. This insecticide is misused and overused by farmers, and hence may pose health hazards to consumers. We monitored λ-cyhalothrin residues in lettuce and cabbage from farms at the market gates in Cotonou and Parakou using high performance liquid chromatography (HPLC) analysis techniques. These residues were also monitored on samples directly from farms (on-farm sampling) for 14 days post-treatment. Potential factors such as photolysis and hydrolysis involved in λ-cyhalothrin degradation were also screened. Results revealed that the level of λ-cyhalothrin residue concentrations in lettuce from Houeyiho decreased from 4.2 mg/kg on Day 1 to about 0.2 mg/kg on Day 7. On Day 9, analyzed lettuces were all λ-cyhalothrin free. In contrast, even 14 days after treatment of cabbage from Bawera (Parakou), we still recorded the presence of λ-cyhalothrin residues in analyzed samples. For samples from market gates, λ-cyhalothrin residues were found in lettuce from two markets out of the nine surveyed in Cotonou. Interestingly, none of these contaminated samples had residues above the maximum residue limit for lettuce (MRL = 0.5 mg/kg). Similarly, in Parakou, samples from all five surveyed vegetable markets were contaminated with λ-cyhalothrin residues at concentrations below the MRL for cabbage (MRL = 0.2 mg/kg). We conclude that λ-cyhalothrin residues in lettuce and cabbage from farms and markets in Parakou and Cotonou are within the MRL, and hence are relatively safe for consumption.
dc.format.extent1-17
dc.language.isoen
dc.subjectHplc
dc.subjectVegetables
dc.subjectInsecticides
dc.titleThe rapid degradation of Lambda-Cyhalothrin makes treated vegetables relatively safe for consumption
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.crpAgriculture for Nutrition and Health
cg.contributor.crpMaize
cg.contributor.crpPolicies, Institutions and Markets
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationUniverstity of Abomey Calavi
cg.contributor.affiliationCenter for Research in Infectious Diseases, Cameroon
cg.contributor.affiliationUniversity of Parakou
cg.contributor.affiliationWorld Vegetable Center
cg.contributor.affiliationEidgenössische Technische Hochschule Zürich
cg.contributor.affiliationLondon School of Hygiene and Tropical Medicine
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryBenin
cg.creator.identifierRousseau Djouaka: 0000-0003-4772-0753
cg.creator.identifierMay-Guri Sæthre: 0000-0001-8819-9154
cg.creator.identifierVictor Manyong: 0000-0003-2477-7132
cg.creator.identifierManuele Tamò: 0000-0002-5863-7421
cg.creator.identifierGeorge Mahuku: 0000-0001-8444-8651
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.journalInternational Journal of Environmental Research and Public Health
cg.howpublishedFormally Published
cg.accessibilitystatusOpen Access
local.dspaceid95280
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.3390/ijerph15071536


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