文档介绍：柠檬酸的工艺生产流程摘要柠檬酸广泛应用于食品行业、医药工业和化学工业等方面。它可利用糖质原料如土豆、地瓜中的淀粉等,在多种霉菌及黑曲霉的作用下,控制较低的温度及PH值、较高的通气量和糖浓度,用发酵法制得。柠檬酸又名枸橼酸,学名3-羟基-3-羧基戊二酸,分子式C6H8O7为无色、无臭、半透明结晶或白色粉末,易溶于水及酒精。加热可以分解成多种产物,与酸、碱、甘油发生反应。柠檬酸主要用于食品工业,因为柠檬酸有温和爽快的酸味,普遍用于各种饮料、汽水、葡萄酒、糖果、点心、饼干、罐头果汁、乳制品等食品的制造。柠檬酸在化学工业上可做化学分析用试剂,用作实验试剂,色谱分析试剂及生化试剂,用作络合剂,掩蔽剂,配制缓冲溶液。采用柠檬酸或柠檬酸盐类做助洗剂,可改善洗剂产品的性能,可以迅速和沉淀金属离子,防止污染物重新附着在织物上,保持洗剂必要的碱性使污垢和灰分散和悬浮,提高表面活性剂的性能,是一种优良的螯合剂。关键词:柠檬酸,黑曲霉,发酵法CitricAcidInTheProcessOfTheProductionProcessABSTRACTcitricacidiswidelyusedinfoodindustry,pharmaceuticalindustryandchemicalindustry,,sweetpotatostarch,etc.,undertheactionofavarietyofmoldandaspergillusNiger,controloflowtemperatureandPHvalue,highventilationandsugarconcentration,,ame3-hydroxy-3-carboxylicglutaricacid,molecularformulaC6H8O7iscolourless,odourless,translucentcrystalsorwhitepowder,,reactwithacid,alkali,,becauseofcitricacidhasamildandrefreshingacidity,widelyusedinallkindsofdrinks,softdrinks,wine,candy,snacks,biscuits,cannedfruitjuices,dairyproducts,,usedaslaboratoryreagents,chromatographyanalyticalreagentandbiochemicalreagents,plexingagentandmaskingagent,,canimprovetheperformanceofdetergentproduct,canquicklyandprecipitationofmetalions,andpreventpollutantsareattachedtothefabricagain,keepthelotion,alkalinenecessarymakethedirtanddustdispersionandsuspension,:citricacid,aspergillusNiger,fermentation目录第一章绪论…………………………………………………………………………………………………………………………………1引言……...……………………………………………………………………………..……………………………………………...2柠檬酸现状及应用……………………………………………………………………………………………………………....第二章实验材料及其方法………………………………………………………………………………………………………….1设计方案…………………………………………………………………………………………………………