Few studies have addressed the distribution of mycotoxins in soybean and/or their processing fractions. In this study, samples from commercial lots were collected in four Brazilian states. The distribution of mycotoxins in soybean fractions, according to their commercial grading system, namely whole kernels (WK), split, broken and crushed kernels (SBCK), damaged kernels (DK), heat damaged and burned kernels (HDBK), moldy kernels (MK), greenish kernels (GK), foreign material + impurities (FMI), were analyzed using HPLC-FLD. AFB₁ and ZEN tested positive in 43.3 and 80%, respectively. The incidence of AFB₁ was higher in MK (50%), followed by HDBK (30.4%) and FMI (26.0%). ZEA incidence ranged from 69% (SBCK) to 100% (HDBK). Co-occurrence (53.3%) in at least one fraction was also detected. Brazil is the second world producer of soybeans, which places the country in a very important position. Therefore, the information provided is crucial and timely relevant for the industry and policymakers.

很少有研究探讨真菌毒素在大豆中的分布和/或其加工级分。在这项研究中，从巴西四个州收集了商业批次的样品。根据大豆商业级分级系统中霉菌毒素的分布情况，包括全麦粒（WK），分裂，破碎和压碎的麦粒（SBCK），破损的麦粒（DK），热破损和燃烧的麦粒（HDBK），发霉的麦粒（使用HPLC-FLD分析MK），绿色颗粒（GK），异物+杂质（FMI）。AFB ₁和ZEN的阳性率分别为43.3％和80％。AFB的发生率₁MK（50％）较高，其次是HDBK（30.4％）和FMI（26.0％）。ZEA发生率从69％（SBCK）到100％（HDBK）不等。还检测到至少一小部分同时存在（53.3％）。巴西是世界第二大大豆生产国，这使该国处于非常重要的地位。因此，所提供的信息对于行业和决策者至关重要且及时相关。