Abstract
Aflatoxins (AFs) are highly toxic and carcinogenic secondary fungal metabolites and have been detected in various food commodities including cereals. Rice were imported to Iran during March 2006–March 2007 analyzed for aflatoxin B1 (AFB1), aflatoxin B2 (AFB2), aflatoxin G1 (AFG1) and aflatoxin G2 (AFG2) using immunoaffinity column and quantitated by HPLC. In this regard, 71 rice samples were collected. After dividing samples to sub-samples, AF analyses were done. Among 71 samples analyzed, AFB1 was detected in 59 samples (83% of the total). The mean of AFB1 was 1.89 ng/g for all samples (with the not detected samples taken as zero). Total AF (AFT) was detected in 59 samples (83% of the total). The mean of AFT was 2.09 ng/g for all samples. AFB1 level in two samples (2.8%) was above the maximum tolerated level (MTL) of AFB1 in Iran (5 ng/g). Regarding AFT, the mean contamination level (2.09 ng/g) was lower than MTL of AFT in rice in Iran as well as lower than maximum level of EU for AFT (4 ng/g), and only nine samples had levels above the MTL of EU in AFT.
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