Method for establishing fingerprint of rhizoma cimicifugae radix puerariae decoction composition and fingerprint
A technology of Shenma Gegen decoction and fingerprint spectrum, which is applied in important analysis fields, can solve problems such as no literature report on the composition of Shenma Gegen decoction, and achieve the effects of convenient operation, objective conclusion, and control of preparation quality.
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Embodiment 1
[0078] Embodiment 1. prepare reference substance solution
[0079] Isoferulic acid reference substance solution Take an appropriate amount of isoferulic acid reference substance, accurately weigh it, put it in a brown measuring bottle, add 10% ethanol to make a solution containing 20 μg of isoferulic acid per 1 ml, and obtain it.
[0080] Cimicifume reference substance solution Take an appropriate amount of Cimicifume reference substance, accurately weigh it, put it in a brown measuring bottle, add 10% ethanol to make a solution containing 80 μg of isoferulic acid per 1 ml, and obtain it.
[0081] Paeoniflorin reference substance solution Take an appropriate amount of paeoniflorin reference substance, weigh it accurately, add methanol to make a solution containing 60 μg per 1 ml, and obtain it.
[0082] Paeonifloride reference substance solution Take an appropriate amount of paeonifloride reference substance, accurately weigh it, put it in a brown measuring bottle, add 10% e...
Embodiment 2
[0089] Embodiment 2. Preparation of Radix Cimicifugae Radix Decoction Composition
[0090]The first Cimicifuga Gegen Decoction composition: Weigh the four-flavored decoction pieces with the following weight ratio: 300g Cimicifuga; 9g (2g Cimicifuga, 3g Pueraria Radix, 2g Radix Paeoniae Alba, 2g Zhilicorice) are placed in a 2L decoction casserole, add 300ml water, soak for 30 minutes, cover and cook, heat (voltage value about 220V) to boiling (about 10 Minutes), keep boiling slightly (voltage value about 170V) to about 100ml of medicinal liquid (about 38 minutes), use two layers of medical gauze to filter out medicinal residues, and obtain.
[0091] The second Cimicifuga Gegen Decoction composition: Weigh the following decoction pieces Cimicifuga 666.7g, Pueraria 1000g, Radix Paeoniae Alba 666.7g, Radix Glycyrrhizae 666.7g by weight, cut into coarse particles with a particle size of 2mm-8mm, add 12 times the amount of water Water, decocted for 30 minutes, filtered to obtain ...
Embodiment 3
[0092] Embodiment 3: the selection of chromatographic conditions
[0093] (1) Selection of detection wavelength
[0094] Octadecylsilane-bonded silica gel is used as filler: methanol is used as mobile phase A, 0.1mol / L phosphoric acid is used as mobile phase B, and gradient elution is carried out according to the following table. The injection volume is 10 μl, and the flow rate is 1.0ml / min , Column temperature: 30°C. The gradient program is as follows.
[0095] Table 1 Gradient elution program 1
[0096]
[0097] Using HPLC multi-wavelength detection technology, the detection wavelengths are λ=316, λ=290, λ=270, λ=250, λ=237, λ=230, and are evaluated by the number of chromatographic peaks and resolution. The results are shown in figure 1 ,2.
[0098] From the 3D spectral scanning graph, it can be known that most of the substances contained in Cimicifuga Gegen Decoction are at the terminal absorption (210nm-250nm). figure 1 From the wavelengths investigated, it can b...
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