Pre-harvest management is a critical practice for minimizing aflatoxin contamination of maize

dc.creatorMahuku, G.
dc.creatorNzioki, H.
dc.creatorMutegi, C.
dc.creatorNarrod, C.
dc.creatorMakumbi, D.
dc.date2018-10-12T16:00:53Z
dc.date2018-10-12T16:00:53Z
dc.date2019
dc.date.accessioned2023-07-17T20:03:04Z
dc.date.available2023-07-17T20:03:04Z
dc.identifier0956-7135
dc.identifierhttps://hdl.handle.net/10883/19647
dc.identifier10.1016/j.foodcont.2018.08.032
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7511531
dc.descriptionMaize, the main dietary staple in Kenya, is one of the crops most susceptible to contamination by aflatoxin. To understand sources of aflatoxin contamination for home grown maize, we collected 789 maize samples from smallholder farmers’ fields in Eastern and South Western, two regions in Kenya representing high and low aflatoxin risk areas, respectively, and determined aflatoxin B1 (AFB1) using ELISA with specific polyclonal antibodies. AFB1 was detected in 274 of the 416 samples from Eastern Kenya at levels between 0.01 and 9091.8 μg kg−1 (mean 67.8 μg kg−1). In South Western, AFB1 was detected in 233 of the 373 samples at levels between 0.98 and 722.2 μg kg−1 (mean 22.3 μg kg−1). Of the samples containing AFB1, 153 (55.8%) from Eastern and 102 (43.8%) from South Western exceeded the maximum allowable limit of AFB1 (5 μg kg−1) in maize for human consumption in Kenya. The probable daily intake (PDI) of AFB1 in Eastern Kenya ranged from 0.07 to 60612 ng kg−1 bw day−1 (mean 451.8 ng kg−1 bw day−1), while for South Western, PDI ranged from 6.53 to 4814.7 ng kg−1 bw day−1 (mean 148.4 ng kg−1 bw day−1). The average PDI for both regions exceeded the estimated provisional maximum tolerable daily intake of AFB1, which is a health concern for the population in these regions. These results revealed significant levels of preharvest aflatoxin contamination of maize in both regions. Prevention of preharvest infection of maize by toxigenic A. flavus strains should be a critical focal point to prevent aflatoxin contamination and exposure.
dc.description219-226
dc.formatPDF
dc.languageEnglish
dc.publisherElsevier
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dc.relationhttps://ars.els-cdn.com/content/image/1-s2.0-S0956713518304419-mmc2.docx
dc.relationhttps://ars.els-cdn.com/content/image/1-s2.0-S0956713518304419-mmc3.csv
dc.rightsCIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
dc.rightsOpen Access
dc.source96
dc.sourceFood Control
dc.subjectAGRICULTURAL SCIENCES AND BIOTECHNOLOGY
dc.subjectPre-harvest
dc.subjectExposure
dc.subjectMAIZE
dc.subjectAFLATOXINS
dc.titlePre-harvest management is a critical practice for minimizing aflatoxin contamination of maize
dc.typeArticle
dc.typePublished Version
dc.coverageKENYA
dc.coverageKenya
dc.coverageAmsterdam, Netherlands


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