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Analysis of ginsenosides in ginseng products by capillary electrophoresis.January 2001 (has links)
Wong Pak Ki. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2001. / Includes bibliographical references (leaves 86-88). / Abstracts in English and Chinese. / Abstract --- p.i / Acknowledgements --- p.iv / Dedication --- p.v / Table of Contents --- p.vi / List of Abbreviations --- p.ix / List of Appendices --- p.xi / List of Figures --- p.xiv / List of Tables --- p.xx / Chapter Chapter 1: --- Introduction --- p.1 / Chapter 1.1 --- Ginseng and Ginsenosides --- p.1 / Chapter 1.2 --- Instrumental Analysis of Ginsenosides --- p.6 / Chapter 1.2.1 --- Thin Layer Chromatography --- p.6 / Chapter 1.2.2 --- Infrared Spectroscopy --- p.7 / Chapter 1.2.3 --- Colorimetry --- p.7 / Chapter 1.2.4 --- Gas Chromatography --- p.7 / Chapter 1.2.5 --- High Performance Liquid Chromatography --- p.8 / Chapter 1.3 --- Objective of the Study --- p.9 / Chapter Chapter 2: --- Experimental --- p.13 / Chapter 2.1 --- History of Electrophoresis and Capillary Electrophoresis --- p.13 / Chapter 2.1.1 --- Electroosmotic Flow (EOF) --- p.14 / Chapter 2.1.2 --- Electrophoretic Migration --- p.18 / Chapter 2.2 --- Reagents and Materials --- p.20 / Chapter 2.2.1 --- Reagents and Glassware --- p.20 / Chapter 2.2.2 --- Instrumentation --- p.20 / Chapter 2.2.3 --- Preparation of Solutions and Wavelength Selection --- p.22 / Chapter 2.2 --- Procedures --- p.23 / Chapter Chapter 3: --- Results and Discussions --- p.24 / Chapter 3.1 --- Initial Selection of the Running Electrolyte --- p.24 / Chapter 3.2 --- Inclusion Additives in the Aqueous Buffer Solution --- p.29 / Chapter 3.2.1 --- Reasons for Addition of Buffer Additives --- p.29 / Chapter 3.2.1.1 --- Cyclodextrin --- p.29 / Chapter 3.3 --- Addition of Surfactants --- p.33 / Chapter 3.3.1 --- Sodium Dodecyl Sulfate (SDS) --- p.35 / Chapter 3.3.2 --- Sodium Cholate --- p.41 / Chapter 3.4 --- Addition of Organic Modifier --- p.43 / Chapter 3.5 --- Effect of pH --- p.46 / Chapter 3.6 --- Effect of the Concentration of the Borate/Phosphate Solution --- p.51 / Chapter 3.7 --- Effect of Capillaries with Different Inner Diameters (I.D.) --- p.54 / Chapter 3.7.1 --- Effect of pH --- p.54 / Chapter 3.7.2 --- Effect of the Buffer Concentration --- p.60 / Chapter 3.7.3 --- Comparison of Migration Time between Capillaries of 50μm and 75μm Inner Diameter --- p.62 / Chapter 3.8 --- Optimization of Other Experimental Parameters --- p.66 / Chapter 3.8.1 --- Applied Voltage --- p.66 / Chapter 3.8.2 --- The Time of Injection --- p.68 / Chapter 3.8.3 --- The Operating Temperature --- p.70 / Chapter 3.9 --- Intra-day and Inter-day Reproducibility --- p.72 / Chapter 3.10 --- Quantitative Analysis of the Ginsenosides --- p.74 / Chapter 3.11 --- Application of the Developed Methodology --- p.78 / Chapter 3.11.1 --- Experimental Procedures --- p.79 / Chapter Chapter 4: --- Conclusion --- p.83 / References --- p.86 / Appendices --- p.89
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