中文摘要：本研究采用液相色谱-质谱联用“直接进样”法确定了尼日利亚北部9州78个穗腐病玉米样品的霉菌毒素污染水平。结果发现玉米中含有大量的代谢物和特别高浓度的霉菌毒素，它们一旦进入动物和人类食物链，而这在农村环境很常见，将对食品和饲料安全构成重大威胁。
外文摘要：The levels of mycotoxin contamination in 78 ear rot infected maize sampled from nine states of northern Nigeria were determined by a straight-forward LC-MS/MS-based 'dilute and shoot' approach. Overall, 93 metabolites were identified whereof most can be assigned either to Aspergillus or Fusarium toxins with 37 and 34% occurrence respectively. Fusarium toxins typically occurred in higher concentrations above 320,000 mu g/kg for fumonisin B-1 (FBI) and 1,000,000 mu g/kg for hydrolysed FBI. The fumonisins (FB1, and FB4) were also most widespread, occurring in all samples. Aflatoxin B-1 (mean: 800 mu g/kg) was found in samples from all states, but in 63% of all samples. Less frequently reported aflatoxins (AFM(1) and AFP(1)) were identified at a comparatively low level in the samples exhibiting the highest aflatoxin levels. Citrinin, cyclopiazonic acid, deoxynivalenol, nivalenol, ochratoxin A (OTA) and zearalenone also occurred in the samples. Total fumonisins, AFB(1), total aflatoxin and OTA levels exceeded the EU limits in 76, 50, 47 and 1.3% of all samples respectively. The wide array of metabolites and exceptionally high concentrations of mycotoxins pose a substantial risk to food and feed safety in the event that the grains enter the animal and human food chain which is common in rural settings.
外文关键词：Aflatoxin；Ear rot；Food safety and security；Fumonisin；Maize；Mycotoxins；Public health
作者：Ogara, IM；Zarafi, AB；Alabi, O；Banwo, O；Ezekiel, CN；Warth, B；Sulyok, M；Krska, R；AF Ogara, Isaac Maikasuwa
作者单位：Nasarawa State Univ
期刊名称：FOOD CONTROL
期刊影响因子：3.388
出版年份：2017
出版刊次：-
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