Organochlorine pesticide residues in dried cocoa beans obtained from cocoa stores at Ondo and Ile-Ife, Southwestern Nigeria
Organochlorine pesticide residues in dried cocoa beans obtained from cocoa stores at Ondo and Ile-Ife, Southwestern Nigeria
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DOI：
10.1016/j.toxrep.2017.03.001
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发表时间：
2017-01-01
影响因子：
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通讯作者：
Adekunle, A. S.
中科院分区：
文献类型：
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作者：
Oyekunle, J. A. O.;Akindolani, O. A.;Adekunle, A. S.
从尼日利亚西南部Ondo和Ile-Ife的可可产品商店获得的干可可豆中测定了有机氯农药（OCPs）的含量。将可可豆样品晒干至恒重，粉碎并用二氯甲烷进行索氏提取以获得OCP。采用气相色谱-电子捕获检测器（GC-ECD）对提取的有机氯农药进行定性鉴定和定量评价。Ondo可可豆中的有机氯农药含量平均范围为ND（p，p-DDE）至82.17 +/- 54.53纳克/克（p，p-DDT），高于Ile-Ife可可豆中的有机氯农药含量，平均范围为0.37 +/- 0.63纳克/克（异狄氏剂）至57.76 +/- 81.48纳克/克（p，p-DDT）。在Ondo的可可豆中检测到的有机氯农药含量较高，可能表明Ondo及其周边地区的可可种植者使用有机氯农药的量较高，因为可可种植园比Ile-Ife周边地区更为集中。在可可豆中测定的有机氯农药含量在世界卫生组织/粮食及农业组织设定的有机氯农药最高残留限量范围内。该研究确定尼日利亚的一种重要作物中存在有机氯农药。因此，有必要继续监测尼日利亚农产品中的生态毒理学化学物质，以便采取措施确保最终用户的健康安全。(C)2017年爱思唯尔有限公司
Levels of organochlorine pesticides (OCPs) were determined in dried cocoa beans obtained from cocoa produce stores at Ondo and Ile-Ife, Southwestern Nigeria. Cocoa beans samples were sun dried to a constant weight, pulverized and soxhlet extracted with dichloromethane to obtain the OCPs. Qualitative identification and quantitative evaluation of the extracted OCPs after clean-up on silica gel were accomplished with the aid of a Gas Chromatography coupled with an Electron Capture Detector (GC-ECD). Levels of OCPs in cocoa beans from Ondo had a mean range of ND (p, p-DDE) to 82.17 +/- 54.53 ng/g (p, p-DDT) were higher than the OCPs levels in cocoa beans from Ile-Ife with a mean range of 0.37 +/- 0.63 ng/g (Endrin) to 57.76 +/- 81.48 ng/g (p, p-DDT). The higher levels of OCPs detected in the cocoa beans from Ondo could be an indication of higher volume of OCPs application by cocoa farmers in Ondo and its environs since cocoa plantations were more concentrated than Ile-Ife environs. Levels of OCPs determined in the cocoa beans were within the Maximum Residue Limit (MRLs) for OCPs set by the World Health Organization/Food and Agricultural Organization. The study established the presence of OCPs in an important crop of Nigeria. Hence, there is the need to keep monitoring ecotoxicological chemical substances in agricultural food products of Nigeria so as to take steps that ensure health safety of end users. (C) 2017 Elsevier B.V.