利用密度差异方法处理受伏马菌素污染的玉米

伏马菌素是存在于粮食中的一种真菌毒素,去除该毒素的方法有磨碎、发酵、含氨化合物和臭氧处理等.利用密度差异法,用水和不同浓度的NaCl溶液处理自然条件下被伏马菌素污染的玉米,玉米样品在溶液中浸泡后,取出浮在水上的部分.对上浮的部分与不上浮的部分分别进行伏马菌素含量检测.除去上浮玉米后,用水处理的玉米样品,毒素减少66.4%,而用质量分数30%NaCl处理的样品,可以去除90.8%的伏马菌素.采用质量分数30%以及高于30%的NaCl溶液处理对去除玉米中伏马菌素的污染有较好的效果.

A Physical Method for Segregation of Fumonisin-Contaminated Maize

Fumonisin B1 , a potent mycotoxin found in grains, can be degradated and detoxified by a variety of methods, including milling, fermentation, ammoniation and ozonation. The study was undertaken to assess the efficiency of density segregation in fumonisin B1 decontamination. A batch of naturally contaminated maize was treated with water and NaCl with different concentrations in water by immersing and removing the upper buoyant fraction. Both the buoyant and non-buoyant fraction was analyzed for fumonisin B1 respectively. With treatment by water alone, 66.4% of the toxin was removed in the buoyant layer. Maximum up to 90.8% of the toxin could be removed when treated with NaCl solution of mass fraction 30%. With NaCl solution of mass fraction 30% and more, the fumonisincontaminated maize could be effectively decontaminated.