香料化學(xué)專業(yè)知識市公開課獲獎?wù)n件

1、Food Coloring Agents and Plant Food Supplements Derived fromVitis vinifera: A New Source of Human Exposure to Ochratoxin A分享人：楊雪芳第1頁第1頁目錄1.文章目的簡介2.文章重點關(guān)鍵詞簡介 3.主要原料和分析辦法4.結(jié)果與討論 5.總結(jié) 第2頁第2頁一、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頁第3頁二、關(guān)鍵詞ochratoxin A：赭曲霉素A，一個含有腎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，減少患病幾率）第4頁第4頁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.（用途很廣泛）Vitis vinifera（釀酒用葡萄）：are commonly used to formulate food antioxidant supplements du

4、e to their high content of polyphenols（多酚）.第5頁第5頁三、主要原料和分析辦法試劑和原料：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)樣品：1.Commercially availa

5、ble PFS, FCA, and leavening agents containing tartrates（41個） 2.Eight additional samples were collected in two processing industries（8個）第6頁第6頁分析辦法：1.樣品萃取 2.離心分離 3.純凈提取液在氮氣保護(hù)下干燥 4.回收率試驗結(jié)果分析：1.色譜法 2.計算出PDI第7頁第7頁四、結(jié)果與討論辦法優(yōu)劣：Analysis of spiked blank samples demonstrated that the method generated accurate

6、 and precise results.第8頁第8頁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頁第9頁五、總結(jié)1.文章主要是為了分析各種樣品中OTA含量，以及O