High performance liquid chromatography analysis method of traditional Chinese medicine prescription Dachengqi decoction
A technology of high-performance liquid chromatography and Dachengqi Decoction, which is applied in the field of high-performance liquid chromatography analysis of the traditional Chinese medicine prescription Dachengqi Decoction, can solve problems that have not yet been discovered, and achieve the effect of wide applicability and convenient operation
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Embodiment 1
[0041] Example 1 Simultaneous determination of the contents of 10 active ingredients in Dachengqi Decoction, a different processed product of rhubarb
[0042] 1. Experimental materials
[0043] 1.1 Instrument
[0044] Model 2695 high-performance liquid chromatography, including 2489UV, quaternary pump, vacuum degassing pump, automatic sampler, column thermostat and Empower3 liquid phase workstation (Waters, USA); KQ5200B ultrasonic cleaner (Kunshan Ultrasonic Instrument Co., Ltd. ); electronic analytical balance (Shanghai Shensheng Technology Co., Ltd., D1810C); DHG-9203A electric heating constant temperature blast drying oven (Shanghai Qixin Scientific Instrument Co., Ltd.); TGL-16G high-speed desktop centrifuge (Shanghai Anting Scientific Instrument Factory );
[0045] Simplicity pure water system; (France, Millipore); HWS-26 electric heating constant temperature water bath (Shanghai Qixin Scientific Instrument Co., Ltd.); WND-200 universal pulverizer (Tianjin Taiste Instr...
Embodiment 2
[0074] Embodiment 2 Negative control experiment
[0075] Samples were prepared according to the method under "Item 2.2" of Example 1, and the negative samples of Dachengqi Decoction that did not contain rhubarb processed products, Magnolia officinalis, Fructus Citrus Fructus Citrus Fructus Citrifolia and Glauber's Salt were prepared respectively, and then prepared according to the method under "Item 2.3" of Example 1 The negative control solution of the test product was centrifuged, filtered through a 0.45 μm microporous membrane and stored for later use. Inject 10 μl of the test solution, the mixed reference solution and the negative control solution respectively, and measure its content, naringin, hesperidin, neohesperidin, aloe-emodin, rhein, honokiol, magnolol , emodin, chrysophanol and emodin methyl ether retention time are about: 42.7, 44.1, 45.9, 62.3, 64.9, 72.1, 73.5, 79.1, 83.7, 90.8min. After comparison of the experimental chromatograms, it was shown that the negat...
Embodiment 3
[0076] The investigation of embodiment 3 chromatographic conditions
[0077] 1. Selection of mobile phase
[0078] Investigation and comparison of methanol-water, methanol-0.1% glacial acetic acid, methanol-0.3% glacial acetic acid, methanol-0.2% phosphoric acid, methanol-0.1% phosphoric acid, methanol-0.05% phosphoric acid, acetonitrile-water, acetonitrile-0.1% phosphoric acid and acetonitrile The influence of -0.2% phosphoric acid and other elution systems on peak elution time, resolution and baseline. It was found that the use of acetonitrile-0.1% phosphoric acid system has better separation of chromatographic peaks and a more stable baseline. Appropriately adjust the gradient elution The procedure can achieve good separation of each peak, and the baseline is relatively balanced, so the acetonitrile-0.1% phosphoric acid system is used for gradient elution.
[0079] 2. Selection of Elution Conditions
[0080]Investigate the effects of different column temperatures and flow...
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