Burden of organochlorine pesticide residues in the root of Cryptolepis sanguinolenta, antimalarial plant used in traditional medicine in Ghana.
The burden of organochlorine pesticides was determined in the roots of Cryptolepis sanguinolenta, an anti malarial plant. In all fourteen organochlorine pesticides, β-HCH, δ-HCH, γ-HCH, heptachlor, aldrin, γ-chlordane, α-endosulfan, p, p’-DDE, dieldrin, endrin, β-endosulfan, p, p’-DDD, P, P’-DDT and methoxychlor were identified and quantified using GC-ECD. Samples used for the investigation were collected from Abetifi and Pepease communities in the Kwahu-East and Apesokobi and Worawora in the Biakoye districts of Ghana. The effect of seasonal variations on the level of the organochlorine pesticide (OCPs) residues in the root of Cryptolepis sanguinolenta was also investigated. The mean concentrations of OCPs in the Cryptolepis sanguinolenta samples collected from Biakoye and Kwahu-East districts in the dry season were much higher compared to those of the wet season. The mean OCPs concentrations in dry season were found to range from 0.006 mg/kg to 0.061 mg/kg while the concentrations for the wet season ranged from 0.001 to 0.011 mg/kg. The sum of OCPs mean concentrations in the root Cryptolepis sanguinolenta also ranged from 0.033 mg/kg to 0.354 mg/kg, with the highest mean level of 0.354 mg/kg detected in samples collected from Biakoye district in the dry season. With the exception of residue levels obtained for the sum of aldrin and dieldrin in Cryptolepis sanguinolenta collected from Biakoye districts in the dry season, the mean OCP residue values obtained were generally below maximum residue limits set by the FAO/WHO Codex Alimentarius Commission and United States/European Pharmacopoeia.
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