新收获玉米呕吐毒素与生霉粒的关系及消减研究

STUDY ON THE ELIMINATION OF DON AND THE RELATIONSHIP BETWEEN DON AND MOLDY KERNELS IN NEWLY HARVESTED MAIZE

研究了主产区新收获玉米中呕吐毒素含量的主要影响因素和消减措施。结果表明:不同地区玉米中呕吐毒素含量在整体上存在较大差异,玉米受呕吐毒素污染的前提条件是感染产毒霉菌,与生霉粒含量无明显相关性。呕吐毒素主要集中在玉米皮层部位,筛理和色选等常规措施均能在一定程度上降低其含量,并对臭氧降毒技术进行了展望。研究结果对合理把控玉米收购质量以及确保入库粮食安全等方面具有较强的现实指导意义。

Based on the maize production,main?influence?factors on the Deoxynivalenol(DON)content and methods for elimination of DON in newly harvested maize were discussed in this paper.It was indicated that there was a big difference in the DON content of maize in different areas.Meanwhile,the precondition of contamination with DON in maize was the infection of molds that could metabolize DON,which had no evident correlation with moldy kernels in maize.What is more,as DON was mainly concentrated on the epiderm of maize,the conventional methods such as sifting and color selecting for grains could reduce the DON content of maize to some extent,and the removal approach for DON in maize by using O3 was also forecasted.The research results of this paper would have an important guiding significance for the ensurence of the quality and safety of maize during its purchasing and warehousing.