Method for detecting ultra-high performance liquid chromatography characteristic chromatogram of semen descurainiae formula granules
An ultra-high-efficiency liquid phase and formula granule technology, which is applied in the field of quality control of Tinglizi formula granules, can solve problems such as poor separation effect and feature map control, and achieve objective conclusions
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[0092] 3. Preparation of the test solution
[0093] (1) Selection of extraction solvent
[0094] Because the Tinglizi formula granule is concentrated from the water extract of Tinglizi, it has strong water solubility. The extraction effect of pure water, 25% methanol aqueous solution, 50% methanol aqueous solution, 75% methanol aqueous solution and 100% methanol on the Tinglizi formula granules was investigated, and the percentages here are methanol volume percentages.
[0095] The specific experimental method is as follows:
[0096] Take an appropriate amount of this product, grind it finely, take about 0.2g, accurately weigh it, put it in a stoppered Erlenmeyer flask, accurately add 25ml of different solvents, weigh it, ultrasonically treat it (frequency 37kHz, power 1130W) for 15 minutes, let it cool, Weigh again, make up the lost weight with different solvents, shake well, centrifuge at 12000rpm for 10 minutes, filter, and take the filtrate to obtain the final product. ...
Embodiment 1
[0225] Example 1: Detection of UPLC characteristic spectrum and establishment of control spectrum of Tinglizi formula granules
[0226] 1. Test method
[0227] 1.1 Preparation of the test solution: Take an appropriate amount of this product, grind it finely, take about 0.2g, accurately weigh it, put it in a stoppered Erlenmeyer flask, add 25ml of 25% methanol aqueous solution, weigh it, and ultrasonically treat it (power 37kHz , frequency 1130W) for 15 minutes, let cool, weigh again, make up the lost weight with 25% aqueous methanol solution, shake well, centrifuge at 12000rpm for 10 minutes, filter, and get the filtrate to get final product.
[0228] 1.2 Preparation of reference substance solution: Take an appropriate amount of quercetin-3-O-β-D-glucose-7-O-β-D-gentiobioside reference substance, weigh it accurately, add 25% methanol water to make each 1ml containing 15μg of the solution, that is.
[0229] 1.3 Chromatographic conditions: using Waters ACQUITY HSS T3 (1.8μm,...
Embodiment 2
[0237] Example 2: Quality identification of Tinglizi formula granules
[0238] 1. Test method
[0239] 1.1 Preparation of reference substance solution: Take an appropriate amount of quercetin-3-O-β-D-glucose-7-O-β-D-gentiobioside reference substance, accurately weigh it, add 25% methanol aqueous solution to make each 1ml containing 15μg of the solution, that is.
[0240] 1.2 Chromatographic conditions: using Waters ACQUITY HSS T3 (1.8μm, 2.1×100mm) chromatographic column, with acetonitrile as mobile phase A and 0.1% trifluoroacetic acid aqueous solution as mobile phase B, carry out gradient elution as specified in the table below; the flow rate is 0.3ml per minute; The column temperature is 30°C; the detection wavelength is 254nm.
[0241]
[0242] 1.3 Preparation of the test solution of the sample to be identified: Take an appropriate amount of the sample to be identified, grind it finely, take about 0.2g, accurately weigh it, put it in a stoppered Erlenmeyer flask, ad...
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