Optimization for the Production of Deoxynivalenol and Zearalenone by Fusarium graminearum Using Response Surface Methodology

文献类型： 外文期刊

第一作者： Wu, Li

作者： Wu, Li;Qiu, Lijuan;Zhang, Huijie;Sun, Juan;Hu, Xuexu;Wang, Bujun;Wu, Li;Zhang, Huijie;Sun, Juan;Hu, Xuexu;Wang, Bujun

作者机构：

关键词： Fusarium graminearum;deoxynivalenol;zearalenone;response surface methodology;optimization;purification

期刊名称：TOXINS （ 影响因子：4.546； 五年影响因子：4.8 ）

ISSN： 2072-6651

年卷期： 2017 年 9 卷 2 期

页码：

收录情况： SCI

摘要： Fusarium mycotoxins deoxynivalenol (DON) and zearalenone (ZEN) are the most common contaminants in cereals worldwide, causing a wide range of adverse health effects on animals and humans. Many environmental factors can affect the production of these mycotoxins. Here, we have used response surface methodology (RSM) to optimize the Fusarium graminearum strain 29 culture conditions for maximal toxin production. Three factors, medium pH, incubation temperature and time, were optimized using a Box-Behnken design (BBD). The optimized conditions for DON production were pH 4.91 and an incubation temperature of 23.75 degrees C for 28 days, while maximal ZEN production required pH 9.00 and an incubation temperature of 15.05 degrees C for 28 days. The maximum levels of DON and ZEN production were 2811.17 ng/mL and 23789.70 ng/mL, respectively. Considering the total level of DON and ZEN, desirable yields of the mycotoxins were still obtained with medium pH of 6.86, an incubation temperature of 17.76 degrees C and a time of 28 days. The corresponding experimental values, from the validation experiments, fitted well with these predictions. This suggests that RSM could be used to optimize Fusarium mycotoxin levels, which are further purified for use as potential mycotoxin standards. Furthermore, it shows that acidic pH is a determinant for DON production, while an alkaline environment and lower temperature (approximately 15 degrees C ) are favorable for ZEN accumulation. After extraction, separation and purification processes, the isolated mycotoxins were obtained through a simple purification process, with desirable yields, and acceptable purity. The mycotoxins could be used as potential analytical standards or chemical reagents for routine analysis.

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