Detection method and application forfingerprint spectrum of Qijudihuang pills
A technology of Qiju Dihuang Pills and fingerprints, which is applied to measuring devices, instruments, scientific instruments, etc., can solve the problems of lack of qualitative and quantitative research on Qiju Dihuang Pills
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[0112] Preparation of the test solution: after pulverizing Qiju Dihuang Wan, accurately weigh 0.8g of Qiju Dihuang Wan powder, place it in a 50mL conical flask with a stopper, and accurately add 24-24 26ml, weighed, sealed with an ultrasonic instrument at a power of 200-300W and a frequency of 30-50kHz for 20-40min, let it cool, weighed again, and used 50-100% methanol aqueous solution to make up for the loss weight, take the supernatant, and filter it with a microporous membrane with a pore size of 0.22 μm to obtain the test solution.
[0113] Preparation of reference solution: Accurately weigh 5-hydroxymethylfurfural, morroniside, chlorogenic acid, loganin, paeoniflorin, luteolin, 3,5-O-dicaffeoylquinic acid, dandelion Cortex phenol, 23-acetyl alisitol B reference substances were placed in volumetric flasks for gradual dilution. That is, first add 50-100% methanol aqueous solution to dissolve and shake to a constant volume in a volumetric flask to obtain a stock solution of...
Embodiment 1
[0146] 1. Sample pretreatment
[0147] Preparation of the test solution: After pulverizing Qiju Dihuang Pills, accurately weigh 0.8g of Qiju Dihuang Pills powder, place in a 50mL conical flask with a stopper, accurately add 25ml of methanol aqueous solution with a volume percentage concentration of 80%, weigh Weight, after the seal is sealed, use an ultrasonic instrument to extract ultrasonically for 30 minutes at a power of 250W and a frequency of 40kHz, let it cool, and weigh again, use 80% methanol aqueous solution to make up the lost weight, take the supernatant, and use a pore size of 0.22 μm microporous membrane to obtain the test solution.
[0148] Preparation of reference solution: Accurately weigh 5-hydroxymethylfurfural, morroniside, chlorogenic acid, loganin, paeoniflorin, luteolin, 3,5-O-dicaffeoylquinic acid, dandelion Cortex phenol, 23-acetyl alisitol B reference substances were placed in volumetric flasks for gradual dilution. Promptly add 80% methanol aqueous...
Embodiment 2
[0172] Adopt the detection method of the Qiju Dihuang Pills fingerprint spectrum set up in above-mentioned embodiment 1 to detect 10 batches of Qiju Dihuang Pills, obtain the fingerprint spectrum of need testing solution and the fingerprint spectrum of reference substance solution, the batch number of 10 batches of Qiju Dihuang Pills See Table 4. The obtained fingerprint data of the test product was imported into the software of "Chinese Medicine Chromatographic Fingerprint Similarity Evaluation System" 2009 version issued by the National Pharmacopoeia Committee, and compared with the standard fingerprint of Qiju Dihuang Pills obtained under the same fingerprint detection conditions The similarity between the fingerprint of Qiju Dihuang Pills and the standard fingerprint of Qiju Dihuang Pills ≥ 0.95 is taken as the standard, and the S1 sample in Table 4 is used as the reference spectrum. figure 1 , see the overlay map figure 2 . The standard fingerprints of Qiju Dihuang Pi...
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