香料化学专业知识市公开课获奖课件

1、Food Coloring Agents and Plant Food Supplements Derived fromVitis vinifera: A New Source of Human Exposure to Ochratoxin A分享人：杨雪芳第1页第1页目录1.文章目的简介2.文章重点关键词简介 3.主要原料和分析办法4.结果与讨论 5.总结 第2页第2页一、文章目 The high incidence of OTA contamination in PFS and food coloring agents derived from V. vinifera suggests t

2、hat maximum permitted level(s) should be established for this mycotoxin in these products.第3页第3页二、关键词ochratoxin A：赭曲霉素A，一个含有肾毒性和致癌作用霉菌毒素。plant food supplements：Plant food supplements (PFS) are widely consumed because they are suggested to maintain and promote health or reduce the risk factors for di

3、seases.（保持和提升健康水平，减少患病几率）第4页第4页Grape pomaces（葡萄果渣）：Grape pomaces are used to produce pomace brandy, grape seed oil, fodder, fertilizer, biogas, grape polyphenols, food coloring, tartrates and food supplements.（用途很广泛）Vitis vinifera（酿酒用葡萄）：are commonly used to formulate food antioxidant supplements du

4、e to their high content of polyphenols（多酚）.第5页第5页三、主要原料和分析办法试剂和原料：OTA（solid）,The stock solution, Standard solutions,acetonitrile,methanol, water (HPLC grade), glacial acetic acid, sodium chloride (ACS grade), polyethylene glycol , sodium hydrogen carbonate (NaHCO3, ACS grade)样品：1.Commercially availa

5、ble PFS, FCA, and leavening agents containing tartrates（41个） 2.Eight additional samples were collected in two processing industries（8个）第6页第6页分析办法：1.样品萃取 2.离心分离 3.纯净提取液在氮气保护下干燥 4.回收率试验结果分析：1.色谱法 2.计算出PDI第7页第7页四、结果与讨论办法优劣：Analysis of spiked blank samples demonstrated that the method generated accurate

6、 and precise results.第8页第8页1.Commercial PFS samples (75%) were found contaminated with OTA at levels ranging from 1.1620.23 g/kg.2.The PFS across different countries is not homogeneous and the consequence is also different.3.The author had calculated PDI of 0.15 ng/kg.4.The results reported herein demonstrate the high incidence and, for some samples, the high level of OTA in PFS and food coloring agents derived from V. vinifera第9页第9页五、总结1.文章主要是为了分析各种样品中OTA含量，以及O