茶多酚提取工艺与研究毕业设计论文.doc

毕业论文题目：茶多酚的提取工艺与研究学院：轻化工程学院年级、专业：2011级应用化工技术专业学生姓名：文涛徐云枭学号：11043100101104310003指导教师：段晓静完成时间：2014年5月20日西昌学院毕业论文毕业论文茶多酚的提取工艺与研究PAGEII茶多酚的提取工艺与研究文涛徐云枭指导教师：段晓静（西昌学院轻化工程学院2011级应用化工技术专业）摘要茶多酚是茶叶中儿茶素类、黄酮类、酚酸类和花色素类化合物的总称。因其化学结构中带有多个活性羟基，对人体保健极为有利，且有抑菌、杀菌、抗肿瘤、抗辐射等多种功效，作为医药和食品等的添加剂，其开发和应用前景十分看好。鉴于目前国内外茶多酚的研究有上升趋势以及在药用和食用中的开发越来越受到人们的重视。本论文利用茶叶在乙醇溶液中榕基溶解条件下通过设置实验条件，通过单因素和多因素实验考察操作条件对乙醇提取率的影响因素，确定其最佳条件。在最佳实验条件下，用乙醇溶液对茶多酚的提取。实验结果表明，最优工艺条件为乙醇浓度80%，提取温度为80℃，液料比为1:3（g/L），提取时间为60min。关键词茶叶提取功效ThethermalstabilityofbuckwheatresearchWentaoXnYun-xiaoSupervisor：DuanXiao-jing(appliedchemicaltechnologygrade2011,SchoolofAppliedandChemicalEngineeringofXichangCollege)AbstractIsteacatechinsinteapolyphenols,flavonoids,phenolicacidsandthefloorboardofthecompoundsofflowerpigments.Becauseofitschemicalstructurewithmultipleactivehydroxyl,ishighlyadvantageoustohumanbodyhealth,andhasantibacterial,sterilization,antitumor,resistancetoradiationandsoonthemanykindsofefficacy,asmedicineandfoodadditives,suchasthedevelopmentandapplicationprospectisgood.Inviewoftheteapolyphenolsresearchathomeandabroadandhasarisingtrendintheirmedicinalandedible,developingmoreandmoregetpeople'sattention.Thispaperusetheteaundertheconditionofthebanyanbasedissolvedinethanolsolutionbysettingtheexperimentalconditions,throughthesinglefactorandmultiplefactorsexperimentinspectstheinfluencefactorsofoperatingconditionsontheethanolextractionyield,determinethebestconditions.Undertheoptimumexperimentconditions,ethanolsolutionfortheextractionofteapolyphenols.Theexperimentalresultsshowthattheoptimalprocessconditionsforethanolconcentration80%,extractiontemperatureis80℃,liquidratioof1:3(g/L),extractingtimefor60min.KeywordsTeapolyphenolsextract致谢毕业论文茶多酚的提取工艺与研究目录TOC\o"1-2"\u1绪论PAGEREF_Toc263163986\h11.1引言PAGEREF_Toc263163987\h11.2茶多酚的理化性质PAGEREF_Toc263163988\h11.3茶多酚药理性质21.4茶多酚的提取工艺31.5本论文研究的主要内容PAGEREF_Toc263163991\h32实验部分PAGEREF_Toc263163994\h42.1实验主要原材料、仪器及设备PAGEREF_Toc263163995\h42.2实验方法PAGEREF_Toc263163996\h43结果与讨论93.1