Method for Establishing Fingerprint of Angelica Decoction Pieces and Its Fingerprint
A technology of fingerprints and decoction pieces, which is applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve the problems of limited sample size, low comparability, and non-consideration, so as to avoid singleness and one-sidedness, large number of peaks, and baseline smooth effect
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[0039] 2.1 Selection of preparation conditions for the test solution
[0040] 2.1.1 Selection of extraction solvent
[0041] Accurately weigh 0.5g of 3 parts of No. 14 angelica decoction pieces and place them in a 50mL conical flask with a stopper, and add 25mL of 25% methanol, 50% methanol, 70% methanol, 5% formic acid methanol, and 100% acetonitrile solution as extraction Agent, ultrasonic treatment (power 250W, frequency 40kHz) 30min, take out, let cool, make up for weight loss, shake up, get the continued filtrate, obtain the need testing solution. The fingerprints were measured under the same detection conditions ( figure 1 -A, 1-B, 1-C, 1-D, 1-E), determine the best extraction solvent by comparison, such as figure 1. Under the same conditions of the remaining detection methods, it was found by comparison that when the extraction solvent was 25% methanol and 100% acetonitrile, the chromatogram peak response of the obtained test product chromatogram was lower and the nu...
Embodiment 1
[0053] Establishment of fingerprints of Angelica decoction pieces
[0054] (1) Preparation of the test solution: Take about 0.5 g of angelica decoction pieces powder (passed through a No. 3 sieve), accurately weigh it, put it in a 50 mL conical flask with a stopper, add 25 mL of 5% methanol formic acid, weigh it, and ultrasonically Treat (power 250W, frequency 40kHz) for 30min, take it out, let it cool, make up for weight loss, shake well, take the continued filtrate as the test solution;
[0055] (2) Preparation of reference solution: Weigh an appropriate amount of ferulic acid, coniferyl ferulic acid, ligustilide I, ligustilide H, ligustilide, n-butylphthalide, butenylphthalide The reference substance, accurately weighed, was prepared by adding acetonitrile with mass concentrations of 0.06mg / mL, 0.19mg / mL, 0.12mg / mL, 0.52mg / mL, 0.87mg / mL, 0.28mg / mL, 0.61mg / mL Mix the reference substance solution, pass through a 0.22 μm microporous membrane, and take the subsequent filtrate ...
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