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首页> 外文期刊>Acta Horticulturae >Evaluation of walnut contamination to Aspergillus flavus and aflatoxin collected from Semnan provinces (Iran).
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Evaluation of walnut contamination to Aspergillus flavus and aflatoxin collected from Semnan provinces (Iran).

机译：评价从塞姆南省（伊朗）收集的核桃对黄曲霉和黄曲霉毒素的污染。

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摘要

One of the major problems in Iranian nuts exporting is contamination of nut to Aspergillus sp. fungi and aflatoxin. In order to evaluate contamination of walnut to Aspergillus flavus fungi and aflatoxin in Semnan province, sampling of walnut was done in 10 points of Semnan province. For investigation of Aspergillus flavus fungus presence in samples, they were cultured in (AFPA) media and the HPLC method was used to assess aflatoxin contamination rate in samples. Converting the data and statistical analysis using Duncan's multi test demonstrated that the mean number of colonies of Aspergillus flavus in the different samples differed. From 10 samples, two samples (G5 and G7) had most contamination to Aspergillus flavus fungi. G7 and G5 had 10.3x103 and 8.6x103 average numbers of fungal colonies respectively. The G9 sample was contaminated with Aspergillus flavus fungi. (5.3x103 average numbers of fungal colonies) which was less than G5 and G7. The other samples did not show any contamination. As conclusion we found that walnut in Semnan province can be contaminated by Aspergillus flavus fungi at least in 30% of probability, however, results about aflatoxin production showed that none of the samples produced aflatoxin.
机译：伊朗坚果出口的主要问题之一是坚果对曲霉菌的污染。真菌和黄曲霉毒素。为了评估塞姆南省核桃对黄曲霉真菌和黄曲霉毒素的污染，在塞姆南省的10个地点进行了核桃采样。为了研究样品中黄曲霉真菌的存在，将它们在（AFPA）培养基中进行培养，并使用HPLC方法评估样品中的黄曲霉毒素污染率。转换数据并使用Duncan多重检验进行统计分析表明，不同样品中黄曲霉菌落的平均菌落数不同。从10个样品中，两个样品（G5和G7）对黄曲霉真菌的污染最大。 G7和G5的平均真菌菌落数分别为10.3x10 3 和8.6x10 3 。 G9样品被黄曲霉真菌污染。 （5.3x10 3 平均真菌菌落数），小于G5和G7。其他样品未显示任何污染。结论是，我们发现塞姆南省核桃被黄曲霉真菌污染的可能性至少为30％，但是，有关黄曲霉毒素生产的结果表明，没有样品产生黄曲霉毒素。

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