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1、乙醇提取龙眼核总黄酮及鉴别论文黄锁义，唐玉莲，黎海妮【关键词】乙醇提取；,,龙眼核；,,总黄酮；,,鉴别摘要：目的探讨龙眼核中总黄酮的提取及鉴别方法，以充分利用龙眼核植物资源，避免资源的浪费。方法采用乙醇提取法从龙眼核中提取黄酮类物质，对所提取的黄酮类物质进行验证，并用分光光度法测定其含量。结果测得样品中总黄酮的含量C=1.634mg/ml，回收率为99.65%.freelakeuseoftheresourcesoflonganseed,avoidlonganseedetrytoextractandchecktheflavanon
2、eoflonganseed.ResultsBythismethodgettingthecontentsofthetotalflavanoneoflonganseedisC=1.634mg/mlandtherateofrecoveryis99.65%.ConclusionThistextprovidestheextractionandpurifyingmethodstogettheouteandthepurityoftheflavanoneisallveryhigh.Thismethodisapurelyphysicalproces
3、sandhasnotanypollution.Itisanidealonnamedriedlongan,alsonamesLongMu,paredtoitem,thelongan,theAsianlitchichinensis,thelongan,.freelb,embroiderstheoussubtropicsfruit［1］.Thelonganoriginallyproducessouthourcountry'snorthSouthAsiatropicsregion,hadmorethan2000yearscultivati
4、onhistoryinourcountry,istheimportantSouthAsiatropicsoftenthegreenlongevityfruittree,isoneoffourLingnangoodfruits.LiShiZhensaidin"NativeChinesePlants"that,"Foodtakelitchichinensisasexpensive,butprofitstakethelonganasisgood."Longan'snutritionalvalueisveryhigh,issouthone
5、offamousgoodfruits.Thelonganistheimportantraaterialformedicine.SuSongposes"ChartafterBookonChinesemedicine",saidlongan"Gansuevennon-toxic,mainlytreatsthefiveinternalorgansperversetrend,satisfiedthemindandpeventedthefood,longhavingcanstrongsoulintelligent,enlivensisnot
6、old,feelenerthinggood".LiShiZhen"NativeChinesePlants"alsosaidthelonganhas"akesuptheemptylongan"theeffect.Thelonganmeatmaytreatthedebilityoflongillnessakesthepeoplefeelaandsoonsickness.Inaddition,thelonganshell,thelongannucleus,dragonvertigoandthedragoneyelid,therootma
7、ytakeblendsChinesenativemedicine.Longannuclearnatureofamedicineastringent,even,ismadmicro,tastepalebutmicropainstakingly,hasstopsbleeding,stops,regulatesthefloorrhage,thehernia,themange,theskindiseaseattributedtodampnessandsoon［2,3］.Thelongannucleuscontainsthealkaloid
8、andthefattyoilandsoon,Exceptblackseedshell,Attheendofgrindingorfriesblackattheendofgrindingtoexternallyapply,Maytreattheorrh
