Method for simultaneously determining multi-index ingredients of Simotang preparation and establishing fingerprint chromatogram thereof
A method of determination and fingerprint technology, which is applied in the field of construction of fingerprints of Simotang preparations, can solve the problems of single active ingredient and inability to fully reflect the quality of Simotang preparations, and achieve good reproducibility and good sample recovery rate , Excellent stability effect
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Embodiment 1
[0045] Example 1 Determination of detection wavelength
[0046] 1. Materials and methods:
[0047] Test solution of Si Mo Tang preparation: 5 pieces of Si Mo Tang Oral Liquid (Hunan Hansen Pharmaceutical Co., Ltd., batch number 090436), mix well, and use a microporous filter membrane (0.45 μm, polyethersulfone, SCAA-101 water) Phase needle filter) filtered, that is, the test solution.
[0048] High performance liquid chromatography detection: accurately draw 5 μL of the test solution and inject it into the high performance liquid chromatograph for determination. Chromatographic conditions: Venusil XBP-C column 18 Column (4.6mm×250mm), column temperature is 30℃, flow rate is 1mL·min -1 , Mobile phase A is acetonitrile, mobile phase B is 0.1% by volume formic acid aqueous solution, the elution gradient is shown in Table 2, the detection wavelength is 190-400nm, and the chromatographic peaks and their retention time and peak area within 45min are recorded.
[0049] Table 2
[0050] T...
Embodiment 2
[0053] Example 2 Optimization of Chromatographic Column
[0054] 1. Materials and methods
[0055] The test solution of the Simotang preparation is the same as in Example 1.
[0056] High performance liquid chromatography detection: the column is Venusil XBP-C 18 Column (4.6mm×250mm) or Agilent ZORBAX SB-C 18 Column (4.6mm×250mm), detection wavelength is 283nm, other conditions are the same as in Example 1.
[0057] 2. Experimental results
[0058] Adopt Venusil XBP-C 18 The chromatogram obtained from the column (4.6mm×250mm) is as follows figure 1 As shown in A, using Agilent ZORBAX SB-C 18 The chromatogram obtained from the column (4.6mm×250mm) is as follows figure 1 Shown in B. Comparison of the two, using Venusil XBP-C 18 Column (4.6mm×250mm) column for chromatographic separation, the eluted chromatographic peak is more stable (see figure 1 ), so Venusil XBP-C is preferred 18 Column (4.6mm×250mm) column.
Embodiment 3
[0059] Example 3 Identification of characteristic peaks and reference peaks
[0060] 1. Materials and methods
[0061] The test solution of the Simotang preparation is the same as in Example 1.
[0062] Preparation of standard products: accurately weigh naringin, hesperidin, neohesperidin, isonaringin, norisoboldine, potassium sorbate, accurately weigh them, and add methanol to make each 1 ml each A solution containing 1mg naringin, 25μg hesperidin, 0.45mg neohesperidin, 80μg isonaringin, 45μg norisobolite, and 0.2mg potassium sorbate is a standard product.
[0063] High performance liquid chromatography detection method: accurately draw 5μl each of the standard solution and the test solution and inject them into the high performance liquid chromatograph for determination. The chromatographic column is Venusil XBP-C 18 Column (4.6mm×250mm), detection wavelength is 283nm, other conditions are the same as in Example 1.
[0064] 2. Experimental results
[0065] The chromatograms of the te...
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