Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, SP, Brazil.
Int J Mol Sci. 2009 Nov 24;10(11):5090-103. doi: 10.3390/ijms10115090.
Natural mycoflora and co-occurrence of fumonisins (FB(1), FB(2)) and aflatoxins (AFB(1), AFB(2), AFG(1) and AFG(2)) in freshly harvested corn grain samples from four regions of Brazil were investigated. Fusarium verticillioides was predominant in all samples. Analysis of fumonisins showed that 98% of the samples were contaminated with FB(1) and 74.5% with FB(1) + FB(2), with toxin levels ranging from 0.015 to 9.67 microg/g for FB(1) and from 0.015 to 3.16 microg/g for FB(2). Twenty-one (10.5%) samples were contaminated with AFB(1), seven (3.5%) with AFB(2) and only one (0.5%) with AFG(1) and AFG(2) Co-contamination with aflatoxins and fumonisins was observed in 7% of the samples. The highest contamination of fumonisins and aflatoxins was observed in Nova Odessa (SP) and Várzea Grande (MT), respectively. The lowest contamination of these mycotoxins was found in Várzea Grande and Nova Odessa, respectively.
本研究调查了巴西四个地区刚收获的玉米谷物样本中的天然真菌区系和伏马菌素(FB(1)、FB(2))与黄曲霉毒素(AFB(1)、AFB(2)、AFG(1)和 AFG(2))的共同出现情况。所有样本中均以层出镰刀菌(Fusarium verticillioides)为主导。对伏马菌素的分析表明,98%的样本受到 FB(1)的污染,74.5%的样本受到 FB(1) + FB(2)的污染,毒素水平范围为 FB(1)的 0.015 至 9.67 微克/克和 FB(2)的 0.015 至 3.16 微克/克。21(10.5%)个样本受到 AFB(1)的污染,7(3.5%)个样本受到 AFB(2)的污染,仅有 1(0.5%)个样本受到 AFG(1)和 AFG(2)的污染。7%的样本中观察到黄曲霉毒素和伏马菌素的共同污染。伏马菌素和黄曲霉毒素污染最严重的地区分别是 Nova Odessa(SP)和 Várzea Grande(MT)。这两种霉菌毒素污染最低的地区分别是 Várzea Grande 和 Nova Odessa。