香料化学.ppt

FoodColoringAgentsandPlantFoodSupplementsDerivedfromVitisvinifera:ANewSourceofHumanExposuretoOchratoxinA,分享人：杨雪芳,目录,1.文章目的介绍2.文章重点的关键词介绍3.主要原料和分析方法4.结果与讨论5.总结,一、文章目的,ThehighincidenceofOTAcontaminationinPFSandfoodcoloringagentsderivedfromV.viniferasuggeststhatmaximumpermittedlevel(s)shouldbeestablishedforthismycotoxinintheseproducts.,二、关键词,ochratoxinA：赭曲霉素A，一种具有肾毒性和致癌作用的霉菌毒素。plantfoodsupplements：Plantfoodsupplements(PFS)arewidelyconsumedbecausetheyaresuggestedtomaintainandpromotehealthorreducetheriskfactorsfordiseases.（保持和提升健康水平，降低患病几率）,Grapepomaces（葡萄果渣）：Grapepomacesareusedtoproducepomacebrandy,grapeseedoil,fodder,fertilizer,biogas,grapepolyphenols,foodcoloring,tartratesandfoodsupplements.（用途很广泛）Vitisvinifera（酿酒用葡萄）：arecommonlyusedtoformulatefoodantioxidantsupplementsduetotheirhighcontentofpolyphenols（多酚）.,三、主要原料和分析方法,试剂和原料：OTA（solid）,Thestocksolution,Standardsolutions,acetonitrile,methanol,water(HPLCgrade),glacialaceticacid,sodiumchloride(ACSgrade),polyethyleneglycol,sodiumhydrogencarbonate(NaHCO3,ACSgrade)样品：1.CommerciallyavailablePFS,FCA,andleaveningagentscontainingtartrates（41个）2.Eightadditionalsampleswerecollectedintwoprocessingindustries（8个）,分析方法：1.样品萃取2.离心分离3.纯净的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,四、结果与讨论,方法的优劣：Analysisofspikedblanksamplesdemonstratedthatthemethodgeneratedaccurateandpreciseresults.,1.CommercialPFSsamples(75%)werefoundcontaminatedwithOTAatlevelsrangingfrom1.1620.23g/kg.2.ThePFSacrossdifferentcountriesisnothomogeneousandtheconsequenceisalsodifferent.3.TheauthorhadcalculatedPDIof0.15ng/kg.4.Theresultsreportedhereindemonstratethehighincidenceand,forsomesamples,thehighlevelofOTAinPFSandfoodcoloringagentsderivedfromV.vinifera,五、总结,1.文章主要是为了分析各种样品中OTA的含量，以及OTA对