中文摘要：燕麦（Avena sativa L.）居世界粮食生产第七位并且是许多具有营养和生物学重要性的成分，如蛋白质、脂肪、碳水化合物、纤维、矿物质及维生素的重要来源。因此过去几年人类消费的燕麦总量逐年递增。但是，这种粮食作物的品质却受到尽管努力控制但仍普遍存在的霉菌毒素污染的影响。因此，探究受污染的燕麦粒中的霉菌毒素及其共轭衍生物的分布规律很重要。为此本研究开发了一种最先进的多重霉菌毒素高分辨质谱法，并用其分析了燕麦样品中常见于挪威谷物粮食中的最重要的霉菌毒素的含量。
外文摘要：Oat (Avena sativa L.) ranks seventh in the world cereal production and is considered to be an important source for many valuable components of nutritional and biological importance, i.e. proteins, fats, carbohydrates, fibre, minerals and vitamins. Because of these properties the amount of oat used for human consumption has increased progressively during the last years. Unfortunately, the quality of this grain crop is often compromised by mycotoxin contamination, which is relatively ubiquitous despite efforts to control the problem. Therefore, it is important to investigate the distribution pattern of mycotoxins and their conjugated derivatives in contaminated oat grains. For this purpose we have developed a state-of-the-art multi-mycotoxin high-resolution mass spectrometry method and analysed oat samples for their content of the most important mycotoxins commonly occurring in Norwegian cereal grain. Quantitative mapping of selected Fusarium free and modified mycotoxins was performed in fractions collected during processing trials consisting of dehulling and sequential pearling. Both the derivative free mycotoxins and their metabolites were mainly present in the hulls compared to the oat kernel, thus dehulling resulted in a significant reduction of the total mycotoxin load, followed by some further reduction by pearling. Furthermore, free and modified mycotoxins were unevenly distributed in relation to each other throughout the grain fractions, showing a shift towards glucosidated forms, such as deoxynivalenol-3-glucoside and HT-2-3-glucoside in the oat kernel, which highlights potential food safety concerns associated with in planta modified mycotoxins.
外文关键词：mycotoxins；modified mycotoxins；food contaminants；oats；processing；LC-HRMS
作者：Ivanova, L；Sahlstrom, S；Rud, I；Uhlig, S；Faeste, CK；Eriksen, GS；Divon, HH
作者单位：Norwegian Vet Inst
期刊名称：WORLD MYCOTOXIN JOURNAL
期刊影响因子：2.091
出版年份：2017
出版刊次：1
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