石河子大學(xué)化學(xué)化工學(xué)院2008屆應(yīng)用化學(xué)專業(yè)本科畢業(yè)論文

1、石河子大學(xué)化學(xué)化工學(xué)院2008屆應(yīng)用化學(xué)專業(yè)本科畢業(yè)論文目錄摘要................................................................11文獻(xiàn)綜述..........................................................21.1鞣質(zhì)的研究意義.................................................

2、.21.2鞣質(zhì)提取方法....................................................31.2.1超聲波提取法..................................................31.2.2有機(jī)溶劑提取法................................................41.2.3酸（堿）浸提法.....................

3、...........................41.3含量測(cè)定........................................................51.3.1絡(luò)合滴定法....................................................51.3.2干酪素法......................................................51

4、.3.3皮粉法........................................................51.4結(jié)語............................................................52實(shí)驗(yàn)部分..........................................................62.1儀器和材料..................

5、....................................62.1.1主要儀器......................................................62.1.2試劑和材料....................................................62.2樣品溶液的制備..............................................

6、....52.3提取液的定量分析................................................72.3.1配制pH值為10的氨—氯化銨緩沖溶液............................72.3.2配制0.05molL的EDTA溶液并標(biāo)定...............................72.3.3配制1molL醋酸鋅溶液并標(biāo)定..........................

7、........82.3.4樣品溶液中鞣質(zhì)含量的測(cè)定......................................8石河子大學(xué)化學(xué)化工學(xué)院2008屆應(yīng)用化學(xué)專業(yè)本科畢業(yè)論文1沙棗中鞣質(zhì)的提取及含量測(cè)定沙棗中鞣質(zhì)的提取及含量測(cè)定摘要摘要:目的目的：尋找在超聲條件下從沙棗中提取鞣質(zhì)的優(yōu)化條件，并進(jìn)行含量測(cè)定。方法：方法：在單因素實(shí)驗(yàn)的基礎(chǔ)上，采取正交設(shè)計(jì)法，以液料比，丙酮濃度，提取溫度，超聲時(shí)間為因素，每個(gè)因素3個(gè)水平選擇L9

8、(34)正交表進(jìn)行實(shí)驗(yàn)，用絡(luò)合滴定法測(cè)定鞣質(zhì)含量作為綜合評(píng)價(jià)指標(biāo)。結(jié)果：結(jié)果：最佳提取條件：物料比為1:10，丙酮濃度為60%，提取溫度為35℃，超聲時(shí)間為35min。最佳條件提取的鞣質(zhì)含量為9.8743%。結(jié)論：結(jié)論：超聲法提取沙棗鞣質(zhì)操作簡(jiǎn)單節(jié)省時(shí)間效果好。關(guān)鍵詞關(guān)鍵詞:沙棗鞣質(zhì)超聲提取含量測(cè)定Abstract:Objective:TosearchfthebestconditionofextractionftannininElaea

9、gnusangustifolialbyultrasonicextractiondeterminetheircontent.Methods:OnthebaseofsinglyeffectexperimentViathethogonalizingdesigntheeffectsofLiquidratiotheconcentrationofacetonefromtemperaturetimeultrasound(eachf3levels)we

10、reconsideredthecomprehensiveevaluationwasguidedbythecontentoftannindeterminedbyComplextitration.Results:Thebestextractionconditions:materialratioof1:10acetoneconcentrationof60percentfromtemperatureof35℃ultrasoundtimef35m

11、in.Thebestconditionsfromthetannincontentof9.8743%.Conclusion:ThewaythatextractionftannininElaeagnusangustifolialbyultrasonicextractiondosesimplyeconomizestimeeffectswell.Keywds:Elaeagnusangustifolialtanninultrasoundextra