Method for constructing characteristic chromatogram of caulis sinomenii
A construction method and feature map technology, applied in instruments, measuring devices, scientific instruments, etc., can solve the problems of complicated operation, inability to distinguish the basis, and low detection efficiency, and achieve the effect of convenient operation, efficient method and wide application.
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Embodiment 1
[0061] Embodiment 1: Construction of characteristic map of Qingfengteng (Qingteng) standard decoction
[0062] 1. Preparation of reference solution
[0063] Take about 0.4 g of the reference medicinal material of C. chinensis, put it in a conical flask with a stopper, add 25 ml of water, decoct for 30 minutes, let it cool, shake well, filter, and take the filtrate as the reference medicinal material solution. In addition, take appropriate amounts of sinomenine reference substance, magnoflorine reference substance, and syringaresinol diglucoside reference substance, accurately weigh them, and add methanol to make 0.3 mg of sinomenine, 50 μg of magnoflorine, and syringaresinol per 1 ml respectively. A solution of 50 μg of diglucoside was used as a reference solution.
[0064] 2. Preparation of the test solution
[0065] Take an appropriate amount of the standard decoction of Qingfengteng (Qingteng) and grind it finely. Take about 0.1g, accurately weigh it, put it in a stopper...
Embodiment 2
[0073] Embodiment 2: the investigation of test sample pretreatment extraction solvent
[0074] 1. Preparation of reference solution
[0075] The relevant method is the same as that in Example 1.
[0076] 2. Preparation of the test solution
[0077] Take about 0.1 g of the standard decoction of Qingfengteng (Qingteng), 5 parallel parts, accurately weighed, put in a stoppered conical flask, and accurately add water, 30% ethanol, 50% ethanol, 70% ethanol, and 95% ethanol. 25ml of ethanol, weighed, ultrasonically treated (power 250W, frequency 40kHz) for 30 minutes, allowed to cool, weighed again, used the corresponding solvent to make up the lost weight, shake well, filter, and take the filtrate.
[0078] 3. Construction of feature map
[0079] (1) Chromatographic conditions
[0080] The relevant method is the same as that in Example 1.
[0081] (2) Testing and results
[0082] Precisely draw 1 μL of each test solution and reference solution, inject them into a liquid chrom...
Embodiment 3
[0086] Embodiment 3: Investigation of the characteristic map of multiple batches of Qingfengteng (Qingteng) standard decoction
[0087] 1. Preparation of reference solution
[0088] The relevant method is the same as that in Example 1.
[0089] 2. Preparation of the test solution
[0090] The relevant method is the same as that in Example 1.
[0091] 3. Construction of feature map
[0092] (1) Chromatographic conditions
[0093] The relevant method is the same as that in Example 1.
[0094] (2) Testing and results
[0095]Precisely draw 1 μL of each test solution and reference solution, inject them into a liquid chromatograph, and then import the spectral data into the "Chinese Medicine Chromatographic Fingerprint Similarity Evaluation System (2012 Edition)" recommended by the State Pharmacopoeia Committee for result analysis. Peak No. 3 (referred to as sinomenine by the reference substance) is the S1 peak, calculate the relative retention time of peak 1, peak 2 and the ...
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