Detection Method of Fingerprint of Ming Ge Shu Qing Drink
A technology of fingerprint spectrum and detection method, which is applied in the detection field of traditional Chinese medicine, can solve the problems of few quality detection methods of Mingge Shuqing Drink, and achieve the effects of simple method, good reproducibility and high precision.
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Embodiment 1
[0040] Embodiment 1 A method for detecting the fingerprint of Minggeshu Qingyin, comprising the following steps:
[0041] Step 1, preparation of Mingge Shuqing drink test solution:
[0042] Take 8 batches of Minggeshuqingyin traditional Chinese medicine samples (each batch is composed of: hawthorn 15g, cassia seed 10g, kudzu root 25g, chrysanthemum 15g, lotus leaf 10g, raw Pu'er 15g, wolfberry 10g) into a 1000mL round bottom bottle, add methanol solution 500mL, Soxhlet extraction (continuous reflux extraction method) at a temperature of 75°C for 2 hours, filtered, the filtrate was placed in a 1000mL volumetric flask, added methanol to constant volume, and passed through a 0.45μm microporous membrane to obtain the test solution;
[0043] Step 2, preparation of mixed reference solution:
[0044] Take accurately weighed reference substances of chlorogenic acid, cryptochlorogenic acid, puerarin, and aurantine cassiatin, place them in a volumetric flask, use methanol to set the vo...
Embodiment 2
[0050] Legal research of embodiment 2 fingerprint spectrum detection method:
[0051] 1. Precision research
[0052] According to the method of Example 1, Mingge Shuqing Drink (Chinese medicine composition is hawthorn 15g, cassia seed 10g, kudzu root 25g, chrysanthemum 15g, lotus leaf 10g, raw Pu'er 15g, wolfberry 10g) is prepared into numbering as S1 test solution, according to embodiment 1 The chromatographic conditions for detection and analysis, parallel injection 6 times, the injection volume is 10 μ L, with chlorogenic acid, cryptochlorogenic acid, puerarin, and orange cassiacin as reference peaks, by analyzing the peaks of the common peaks of the sample HPLC fingerprint The area and retention time were calculated and the RSD value was calculated. The results are shown in Table 1. The results show that the parallel injection precision of this equipment is good.
[0053] Table 1 Precision study peak area and retention time
[0054]
[0055] 2. Stability research
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