1.Preparation,characterization and quantitative analysis of β-cyclodextrin inclusion complex with volatile oil from Qianghuo qushi qingwen granules
Yicheng SUN ; Lingrui QIN ; Kaiping ZOU ; Chenguang ZHAO ; Li DOU ; Shun LIU ; Lingang ZHAO
China Pharmacy 2026;37(6):746-751
OBJECTIVE To prepare the β -cyclodextrin ( β -CD) inclusion complex with volatile oil from Qianghuo qushi qingwen granules, and to characterize and quantitatively analyze the inclusion complex. METHODS The comprehensive scores calculated by inclusion rate and inclusion compound yield were used as indicators for screening the inclusion method. The single-factor experiments and Box-Behnken response surface experiments were used to op timize the inclusion conditions, with the above comprehensive score as response value, and taking the ratio of β -CD to volatile oil, inclusion temperature and inclusion time as indexes. The volatile oil inclusion complex of Qianghuo qushi qingwen granules was prepared according to the determined optimal process, followed by validation. Ultraviolet (UV)-visible spectroscopy, thin-layer chromatography (TLC), and microscopic imaging were also performed. Ultra-high performance liquid chromatography was used to determine the contents of perillaldehyde, pogostone and atractylodin. RESULTS The saturation aqueous solution method was adopted. The optimal inclusion process conditions were as follows: the ratio of β -CD to volatile oil was 7.5∶1, the inclusion temperature was 40 ℃, and the inclusion time was 2.2 h. In three verification experiments, the average inclusion rate was 72.32%, the average yield of inclusion compound was 74.45%, the average comprehensive score was 72.96 points, and the relative error with the predicted value (74.15 points) of the model was 1.61%. UV-visible spectroscopy, TLC and microscopic imaging showed that β -CD and volatile oil successfully formed a new inclusion complex. The average contents of perillaldehyde, pogostone and atractylodin were 4.498 2, 0.814 9, 0.905 7 mg/g, respectively, with RSDs of 0.31%, 0.56% and 0.63% ( n =3). CONCLUSIONS A stable and feasible preparation process of the volatile oil inclusion complex of Qianghuo qushi qingwen granules is successfully established.
2.Study on the extraction process of Hongqijin granules based on standard decoction
Lingrui QIN ; Xutong WU ; Yicheng SUN ; Kaiping ZOU ; Liyuan TIAN ; Xiying TAN ; Jingxian XUE ; Chenguang ZHAO ; Shun LIU
China Pharmacy 2026;37(15):1954-1959
OBJECTIVE To study the extraction process of Hongqijin granules with the standard decoction of Hongqijin formula as the reference. METHODS Fifteen batches of Hongqijin formula standard decoction were prepared. The reference characteristic chromatogram was established, and the chromatographic similarity was calculated. The average extraction yield and average transfer rates of calycosin-7-glucoside, salidroside, curcumin, and emodin of the 15 batches of standard decoction were determined. Taking soaking time, water addition amount, and decoction time as influencing factors, and extraction yield, transfer rates of marker components, as well as chromatographic similarity with the reference characteristic chromatogram as evaluation indexes, orthogonal test combined with principal component analysis was adopted to optimize the extraction process of Hongqijin granules, followed by process verification. RESULTS The average extraction yield of 15 batches of Hongqijin formula standard decoction was 32.55%. The average transfer rates of calycosin-7-glucoside, salidroside, curcumin, and emodin were 70.68%, 74.35%, 2.16%, and 4.62%, respectively. The optimal extraction process of Hongqijin granules was confirmed as follows: extraction was carried out twice; the first extraction used 8-fold water for 60 min, and the second extraction adopted 6.5-fold water for 45 min. In three validation tests, the average extraction yield was 33.01%. The average transfer rates of the four marker components were 79.51%, 75.54%, 1.84%, and 4.30%, with all RSD values less than 2%. The chromatographic similarities between the extracting solution and reference characteristic chromatogram were all higher than 0.990. CONCLUSIONS The optimized extraction process of Hongqijin granules exhibits good stability, and the material basis of the extracting solution is consistent with that of Hongqijin formula standard decoction.
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