HPLC (High Performance Liquid Chromatography) fingerprint spectrum of tablet capable of promoting blood circulation and eliminating goiter, and preparation method thereof
A fingerprint and Xiaoying tablet technology is applied in the field of fingerprint detection of Huoxue Xiaoying tablets, and achieves the effects of high method precision, convenient operation and good peak shape.
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Embodiment 1
[0044] 1. Sample pretreatment
[0045] Preparation of the test solution: Huoxue Xiaoying Tablets (0.6g / tablet), take 10 tablets, grind into fine powder, accurately weigh about 2.000g, place in a 100ml volumetric flask, and accurately add ethanol with a volume concentration of 70%. 50ml of aqueous solution, weighed, sealed with an ultrasonic instrument for 30min, then weighed again, supplemented the lost weight with 70% ethanol, centrifuged at 3000r / min for 20min, took the supernatant, and used a pore size of 0.22μm filter membrane to obtain the test solution.
[0046] Preparation of mixed reference substance solution: Accurately weigh erine, amygdalin, wangbulixing flavonoid glycoside, saikosaponin B2, saikosaponin B1, bisdemethoxycurcumin, demethoxycurcumin and gemacerone reference substance, placed in a volumetric flask for gradual dilution, that is, adding 70% ethanol aqueous solution to dissolve and shake up at a constant volume in a volumetric flask to obtain a reference...
Embodiment 2
[0073] The optimization of embodiment 2 chromatographic conditions
[0074] 1. Selection of wavelength
[0075] Wavelength: 230nm, 250nm, 280nm
[0076] Select different detection wavelengths and perform elution according to the gradient program in Table 5. The gradient elution program in Table 5 was adopted before the elution program in Table 2 was determined. The fingerprints of the three wavelengths are shown in Figure 4 .
[0077] table 5
[0078] time / min Mobile phase A / % (volume) Mobile phase B / % (volume) 0~15 0 100 15~20 11 89 20~35 11→24 89→76 35~40 24→54 76→46 40~50 54→90 46→10 50~61 90→0 10→100 61~70 0 100
[0079] It can be seen that compared with 230nm and 280nm, the number of chromatographic peaks with a detection wavelength of 250nm is significantly increased, and the peak height is significantly enhanced, especially at 60-70min, the number of peaks at 280nm is significantly less than 250nm. The chr...
Embodiment 3
[0086] The detection of embodiment 3 samples
[0087] Three batches of samples were re-prepared, and their fingerprints were tested under the above conditions respectively. The comparison results of the similarity between each batch and the generated standard spectrum are shown in Table 6, which shows that the method has good reproducibility, and each batch is similar to the reference standard spectrum. The degree is greater than 0.9, which is suitable for the detection of the characteristic fingerprint of Huoxue Xiaoying Tablets.
[0088] Table 6 Similarity Calculation Results
[0089] sample S1 190404 190406 190407 Control Fingerprint S1 1 0.909 0.916 0.904 0.934 190404 0.909 1 0.932 0.937 0.978 190406 0.916 0.932 1 0.954 0.974 190407 0.904 0.937 0.954 1 0.977 Control Fingerprint 0.934 0.978 0.974 0.977 1
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