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E. Azziz-Baumgartner , K. Lindblade , K. Gieseker , H. S. Rogers, S. Kieszak, H. Njapau, et al., “Case-Control Study of an Acute Aflatoxicosis Outberak, Kenya, 2004,” Environmental Health Perspectives, Vol. 113, No. 12, 2005. Internet Avaiable: http://ehp.niehs.nih.gov/members/2005/8384/ 384.html

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• TITLE: Aflatoxin Carryover during Large Scale Peanut Butter Production

  AUTHORS: Andrew H. Siwela, Kudzayishe J. Mukaroa, Nozipo Nziramasanga

  KEYWORDS: Aflatoxin, Roasting, Blanching, Peanut Butter

  JOURNAL NAME: Food and Nutrition Sciences, Vol.2 No.2, March 31, 2011

  ABSTRACT: Peanut butter was monitored for aflatoxin contamination at different stages during its large-scale production starting from raw shelled peanuts up to the final product. Twenty five samples, weighing 2 kg each, were taken from each of the following stages: roasting at 160?C, blanching/de-skinning and grinding. The sub-samples were ground, thoroughly mixed and further reduced by the quartering technique until a 1 kg sub-sample was obtained. This was then analyzed for aflatoxins using reverse phase HPLC incorporating pre-column trifluoroacetic acid derivatization. The results showed a total aflatoxin percentage reduction of 51% after roasting, 27% after blanching/de-skinning followed by a further 11% after grinding to make peanut butter. This meant that there was a cumulative total reduction of 89% of aflatoxin concentration during the production process of peanut butter. These results show that there is a significant reduction of aflatoxin levels at the roasting and blanching stages in the process of producing peanut butter.