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首页> 外文期刊>Mycotoxin Research >Sterigmatocystin and aflatoxin B-1 contamination of corn, soybean meal, and formula feed in Japan
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Sterigmatocystin and aflatoxin B-1 contamination of corn, soybean meal, and formula feed in Japan

机译：Sterigmatocystin和黄曲霉毒素B-1玉米，大豆餐和日本配方饲料的污染

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摘要

Sterigmatocystin (STC) and aflatoxin B-1 (AFB(1)) were analyzed in 246 corn samples, 126 soybean meal samples, and 861 formula feed samples from the Japanese market between April 2010 and March 2015. The detection rate, the highest concentration, and the mean concentration of STC were respectively 14%, 6.4 mu g/kg, and 1.2 mu g/kg for corn; 14%, 1.1 mu g/kg, and 0.63 mu g/kg for soybean meal; and 43%, 9.1 mu g/kg, and 0.97 mu g/kg for formula feed. The detection rate, the highest concentration, and the mean concentration of AFB(1) were respectively 46%, 24 mu g/kg, and 3.9 mu g/kg for corn; 30%, 6.7 mu g/kg, and 1.1 mu g/kg for soybean meal; and 47%, 20 mu g/kg, and 1.6 mu g/kg for formula feed. A weak negative correlation between the STC and AFB(1) concentrations was observed: there was a high concentration of AFB(1) in samples that contained a lower concentration of STC and vice versa. Spearman's rank correlation coefficient showed a weak negative correlation of - 0.30 (p & 0.001, n = 128) for corn and - 0.23 (p & 0.001, n = 575) for formula feed. In conclusion, no correlation was observed between the mean concentrations of STC contamination in formula feed (0.97 mu g/kg) and in corn (1.2 mu g/kg) and the blending rate (approximately 50%). The rate of STC contamination in the formula feed (43%) was higher than that in corn (14%). Therefore, it is likely that ingredients other than corn contribute to the contamination of formula feed with STC. In this study, regarding STC, problematic samples were not found.
机译：在2010年4月至2015年4月至2015年3月间，分析了246个玉米样品，126个豆粕样品和861配方饲料样品的246个玉米样品和861配方饲料样品中的甾体素（STC）和黄曲霉毒素B-1（AFB（1））。检测率，最高浓度，STC的平均浓度分别为14％，6.4μg/ kg，1.2μg/ kg用于玉米; 14％，1.1μg/ kg，豆粕0.63μg/ kg;和43％，9.1μg/ kg和0.97μg/ kg用于式饲料。检测率，最高浓度和AFB（1）的平均浓度分别为46％，24μg/ kg和3.9μg/ kg用于玉米; 30％，6.7μg/ kg，1.1 mu g / kg用于大豆粕;和47％，20μg/ kg和1.6μg/ kg用于式饲料。观察到STC和AFB（1）浓度之间的弱负相关：在含有较低浓度的STC的样品中具有高浓度的AFB（1），反之亦然。 Spearman的等级相关系数显示玉米和 - 0.23（P＆amp; 0.001，N = 128）的弱负相关性 - 0.30（p＆amp; 0.001，n = 128），用于式饲料。总之，在式饲料（0.97μg/ kg）和玉米（1.2μg/ kg）和混合速率（约50％）之间的STC污染的平均浓度之间没有观察到相关性。式饲料中的STC污染速率（43％）高于玉米（14％）。因此，玉米以外的成分可能有助于用STC污染式饲料。在该研究中，关于STC，未发现有问题的样本。

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