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高速逆流色谱法分离纯化黄顶菊及芒果花中活性成分及活性研究

Abstract第7-8页
摘要第9-10页
Abbreviations第10-22页
Chapter 1 Literature review第22-64页
    1.1 General introduction to natural products第22-39页
        1.1.1 Flaveria bidentis L. Kuntze第24-31页
            1.1.1.1 Introduction第24-25页
            1.1.1.2 Main bioactive components in F. bidentis L.(Kuntze)第25-31页
        1.1.2 Mangifera indica L. (Mango)第31-39页
            1.1.2.1 Introduction第31-36页
            1.1.2.3 Biological importance of mango phenolic compounds第36-39页
                1.1.2.3.1 Antioxidants第36-37页
                1.1.2.3.2 Anticancers第37页
                1.1.2.3.3 Anti-diabetics第37-38页
                1.1.2.3.4 Anti-inflammatory第38页
                1.1.2.3.5 Antidiarrheal effects第38页
                1.1.2.3.6 Other pharmacological uses第38-39页
    1.2 Extraction methods of bioactive compounds第39-46页
        1.2.1 Microwave-assisted extraction (MAE)第40-41页
        1.2.2 Ultrasound assisted extraction technique第41-43页
        1.2.3 Supercritical fluid extraction(SFE)第43-45页
        1.2.4 Heat reflux extraction (HRE)第45-46页
    1.3 Adsorption and desorption separation method第46-51页
        1.3.1 Macroporous resins第46页
        1.3.2 Adsorption enrichment by macroporous resin第46-48页
        1.3.3 Applications of adsorption and desorption process第48-51页
    1.4 Chromatographic separation techniques第51-56页
        1.4.1 High speed countercurrent chromatography (HSCCC)第51-54页
            1.4.1.1 Principle of HSCCC第51-52页
            1.4.1.2 Solvent system selection for HSCCC第52-53页
            1.4.1.3 HSCCC an efficient separation method第53-54页
        1.4.2 High performance liquid chromatography第54-56页
    1.5 Bio-activity tests第56-64页
        1.5.1 Antioxidant test of phenolic compounds第56-60页
            1.5.1.1 General mechanism action of antioxidants第57-58页
            1.5.1.2 DPPH (2,2-diphenyl-picrylhydrazyl)assay:第58-60页
                1.5.1.2.1 Reaction mechanism of DPPH第58-60页
        1.5.2 Antimicrobial test第60-64页
Chapter 2 Separation of flavonoids from Flaveria bidentis (L.)Kuntze employing macroporousresins followed by HSCCC第64-92页
    2.1 Background第64-66页
    2.2 Materials and methods第66-74页
        2.2.1 Chemicals第66-67页
        2.2.2 Apparatus第67-68页
        2.2.3 Preparation of F. bidentis extracts第68-69页
        2.2.4 Analysis第69-70页
            2.2.4.1 Total flavonoids concentration determination第69-70页
        2.2.5 Adsorbents第70页
        2.2.6 Total flavonoids' static adsorption and desorption tests第70-71页
        2.2.7 Dynamic adsorption and desorption of total flavonoids第71页
        2.2.8 Dynamic adsorption and desorption of target compounds第71-72页
        2.2.9 Determination of adsorption capacity, adsorption, and desorption ratios第72页
        2.2.10 Development of biphasic solvent system/sample solution第72-73页
        2.2.11 HSCCC separation procedure第73-74页
        2.2.12 HPLC analysis第74页
    2.3 Results and discussion第74-91页
        2.3.1 MRs selection第74-76页
        2.3.2 Adsorption and desorption conditions for total flavonoids:第76-83页
            2.3.2.1 Effect of initial concentration of solution on the adsorption capacity第76-77页
            2.3.2.2 Effect of pH of the solution on total flavonoids recovery第77-78页
            2.3.2.3 Effect of flow rate on the total flavonoids recovery第78-79页
            2.3.2.4 Effect of concentration of ethanol and its elution volume on the purity and recoveryof total flavonoids第79-80页
            2.3.2.5 Effect of volume of water on total flavonoids' recovery and purity第80-81页
            2.3.2.6 Dynamic adsorption curve第81-82页
            2.3.2.7 Reproductive use of D4020 resin第82-83页
        2.3.3 Isorhamnetin 3-sulfate and astragalin adsorption and desorption第83-89页
            2.3.3.1 Isorhamnetin 3-sulfate adsorption isotherms on D4020 resin第83-85页
            2.3.3.2 Adsorption and desorption conditions for astragalin and isorhamnetin 3-sulfate第85-87页
            2.3.3.3 Ethanol concentration optimization第87-88页
            2.3.3.4 Dynamic desorption curve on D4020 resin第88-89页
        2.3.4 Purification by HSCCC第89-91页
    2.4 Conclusion第91-92页
Chapter 3 Separation of phenolic compounds from the ethanol extracts of Mangifera indica. Lflowers by using two-step HSCCC (normal phase mode leading to elution extrusion)第92-114页
    3.1 Background of Mangifera indica. L第92-94页
    3.2 Experimental第94-98页
        3.2.1. Instrument第94-95页
        3.2.2. Chemicals第95页
        3.2.3. Mango flowers crude extract preparation第95-96页
        3.2.4. Calculation of partition coefficient (K)第96-97页
        3.2.5. Solvent system preparation for HSCCC第97页
        3.2.6. HSCCC separation procedure第97-98页
        3.2.7. Sample analysis (gradient analysis conditions of HPLC)第98页
    3.3 Results and discussion第98-112页
        3.3.1 Solvent system for HSCCC第98-102页
        3.3.2 HSCCC separation of target compounds and HPLC analysis第102-107页
        3.3.3 Structural illustration for target compounds第107-112页
    3.4 Conclusion第112-114页
Chapter 4 Antioxidant potency (DPPH-assay) and anti-microbial activity of the mango flowerextract against pathogens第114-126页
    4.1 Background第114-116页
    4.2 Material and method第116-119页
        4.2.1 Plant collection第116-117页
        4.2.2 Bacterial strains第117页
        4.2.3 Chemicals and glassware第117页
        4.2.4 Sample preparation第117页
        4.2.5 DPPH-assay第117-118页
        4.2.6 Anti-microbial test第118-119页
            4.2.6.1 Disc diffusion method第118-119页
            4.2.6.2 Minimal inhibition concentration (MIC)第119页
    4.3 Results and discussion第119-124页
        4.3.1 DPPH-assay (antioxidant test)第119-121页
        4.3.2 Antimicrobial susceptibility of mango flowers and leaves extract第121-124页
            4.3.2.1 Minimum inhibitory concentration (MIC)第123-124页
    4.4 Conclusion第124-126页
Chapter 5 Conclusion第126-128页
Chapter 6 References第128-161页
List of Publications第161-162页
Acknowledgements第162-163页
Nusrat Shaeen (Author)第163-165页
Professor Dr. Yun WEI (Research Supervisor)第165-166页
附件第166-167页

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