Aflatoxins in raw Brazil nut (Bertholletia excelsa H.B.K.)

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Abstract

The Brazil nut is a nutritionally rich food, produced and consumed in tropical regions. On the other hand, it may be suitable to toxigenic fungi and consequently contamination by aflatoxins (AFL), toxic substances to consumers. In this context, the objective of this work was to evaluate the occurrence of AFL in raw Brazil nuts, that is, before being subjected to industrial drying stages. Of 23 samples were purchased at retail in the city of Manaus-Am-Brazil and evaluated by high performance and liquid chromatography for total AFL (B1+b2+G1+G2). From the samples, 8.6 % were positive for total AFL and. Only AFG1 and AFG2, were detected in the LOD (0.8 μg/kg) and met to the limit of <10 µg/kg of current legislation in Brazil and European Union. In conclusion, despite the contaminated samples met the legal limits, that seems the AFL contamination could happen in raw Brazil nut, as it has been reported in dried seeds. In this sense, some effort in the initial steps of the Brazil nut chain must be applied to mitigate AFL contamination before reach the factory processing.
巴西生坚果的黄曲霉毒素含量
巴西坚果是热带地区生产和消费的一种营养丰富的食物。另一方面,它可能适合产毒真菌,从而污染的黄曲霉毒素(AFL),有毒物质的消费者。在这种情况下,这项工作的目的是评估AFL的发生在生巴西坚果,即,受到工业干燥阶段之前。23份样品在巴西manaus am市零售购买,并通过高效液相色谱法评估总AFL (B1+b2+G1+G2)。在样本中,8.6%的人总AFL阳性。在LOD (0.8 μg/kg)中仅检测到AFG1和AFG2,满足巴西和欧盟现行立法<10 μg/kg的限值。总之,尽管受污染的样品符合法律限制,但似乎AFL污染可能发生在生巴西坚果中,就像在干燥种子中报道的那样。从这个意义上说,在巴西坚果链的最初步骤中,必须采取一些措施,在到达工厂加工之前减轻AFL污染。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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