地榆中藥用活性成分提取工藝及穩(wěn)定性研究.pdf

1、東北林業(yè)大學碩士學位論文地榆中藥用活性成分提取工藝及穩(wěn)定性研究姓名：姜貴全申請學位級別：碩士專業(yè)：林產(chǎn)化學加工工程指導教師：方桂珍20050601東北林韭大學碩士學位論文AbstractPlantpolyphenols，allexcellentnaturalantioxidant，hasbeenstudiedextensivelywhiletheextractingtechniquesofpolyphenols，oligoprocyan

2、idinsandflavonesintherootofsanguisorbahaven’tbeenreportedinChinaItwasinvestigatedhowtoincreasetheyieldandpurityoftanninflavoneandoligoprocyanidinsfromtherootandstalkofsanguisorba，andthestabilityofpolyphenolsfromsanguisor

3、bawasstudiedtoo111echemicalconstitutesofsanguisorbawereanalyzedtheconditionsonextractingtannjll’flavoneandoligoprocyanidinsfromsangnisorbabygenerallixiviatingprocessandultrasonicwavewereoptimizeneflavoneandoligoprocyanid

4、insWereseparatedfromsanguisorbaandpurified111estabilityofpolyphenolfromsanguisorbawasstudiedandthechemicalstructureoftheproductswasanalyzedTheresults黜asfoUows：Therootofsanguisorbaisabundantinstarch(161％)，tannis(885％)，oli

5、goprocyanidins(57％)andflavone(1456％)Thecontentinrootishighernotonlythanstalkandleaves，butalsothanthenormalplantsInlixiviafingprocess，thepreferabletechnicalparametersofextractingtamlis，flavoneandoligoprocyanidinsfromthero

6、otandstalkofsanguisorbawereobtainedthroughchangingtheconcentrationofethanol，particlesizeofrawmaterial，theratioofsampleweighttosolventvolttme，therefluxtemperature，extractingtimeandrefluxtimesTheextractionratesoftanninflav

7、oneandoligoprocyanidinsfromtherootwere853％1456％and570‘respectively(tothedryrawmaterial)，andinthestalkWele2132％，090％and2。08％respectivelyIntheextractingprocessusingultrasonicwave，thepreferabletechnicalparametersofextractin

8、gpolyphenolsfromtherootandstalkofsanguisorbawereacquiredbychangingtheparticlesizeofrawmaterial，theratioofsampleweighttosolventvolume，ultrasonictime，ultrasonicpowerultrasonictimes酏eextractionratesofpolyphenolsintherootand

9、stalkwere1171％and188％individuallyTheflavoneandoligoprocyanidinswerepurifiedbythesolventseparationmethodTheproperseparationconditionwasobtainedIntheobtainedproducts，thecontentsoftotalflavoneandoligoprocyanidinswere9679％an

10、d5685％，andtheyieldsWere759％and342％respectively弧estabilitiesoftheextractfromsanguisorbaunderdifferentpH，light，heat，ultravioletrayoxidantreducingagentandadditiveagentsWglestudiedItwasindicatedthcproductscouldwidelyusedinth

11、econditionofweakacidorneutral，whiletheywerenotstabletoheatandlight，SOtheyshouldbeusedwithoutlightandatlowtemperatureTheproductshadastrongabilitytowithstandultravioletrayTheycouldeasilybeoxidizedanddegradedbyoxidantwhilet