Please use this identifier to cite or link to this item: http://hdl.handle.net/11189/6782
Title: Occurrence of the C-series fumonisins in maize from the former Transkei region of South Africa
Authors: Shephard, GS 
van der Westhuizen, L 
Sewram, V 
van Zyl, J 
Rheeder, JP 
Keywords: chromatography;HPLC;fumonisins;cereals
Issue Date: 2011
Publisher: Taylor & Francis
Source: Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2011 Dec;28(12):1712-6
Journal: Food Addit Contam Part A Chem Anal Control Expo Risk Assess 
Abstract: Fumonisins are a group of structurally related mycotoxins produced mainly in maize by Fusarium verticillioides and F. proliferatum. The most abundant naturally occurring analogue is fumonisin B(1) (FB(1)), with lesser amounts of fumonisin B(2) (FB(2)) and fumonisin B(3) (FB(3)) occurring. The C-series fumonisins (FCs) are structurally analogous to the B-series but lack the C-1 methyl group. Good and mouldy subsistence-grown maize samples were collected from the Centane and Bizana districts in the former Transkei region of South Africa. After extraction with methanol/water and clean-up on strong anion exchange solid phase extraction cartridges, FB(1), FB(2), FB(3), FC(1), FC(3) and FC(4) were determined by reversed-phase LC-MS/MS using positive ion electrospray ionisation. FB(1) levels in both good and mouldy maize from Centane (means (±SD) 2.75 ± 2.24 and 23.4 ± 12.5 mg kg(-1), respectively) were higher than the corresponding levels in maize samples from Bizana (means 0.056 ± 0.157 and 3.71 ± 5.01 mg kg(-1), respectively). Similarly, FC(1) levels in both good and mouldy maize from Centane (means 0.107 ± 0.099 and 0.814 ± 0.391 mg kg(-1), respectively) were higher than in Bizana, where FC(1) was detected in only one (0.018 mg kg(-1)) of 19 good maize samples and occurred in mouldy maize with a mean of 0.102 ± 0.135 mg kg(-1). A significant correlation (r=0.982, p<0.01) was observed between FB(1) and FC(1) levels in all samples, with FC(1) levels at 3.3% of the corresponding FB(1) levels. FC(4) levels were similar to FC(1), whereas only low amounts of FC(3) were detected.
Description: Article
URI: http://hdl.handle.net/11189/6782
DOI: https://doi.org/10.1080/19440049.2011.605773
Appears in Collections:HWSci - Journal Articles (DHET subsidised)

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