1.Expert Consensus on Clinical Application of Qidong Yixin Oral Liquid
Changkuan FU ; Xiaochang MA ; Mingjun ZHU ; Yue DENG ; Hongxu LIU ; Mingxue ZHANG ; Ying CHEN ; Yan ZHOU ; Ling ZHANG ; Jianhua FU ; Wei YANG ; Yu'er HU ; Ming CHEN ; Yanming XIE ; Yuanyuan LI
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(4):147-158
The prescription of Qidong Yixin oral liquid is derived from the experience of national medical master Ren Jixue in treating viral myocarditis (VMC). It has the functions of tonifying Qi, nourishing the heart,calming the mind, and relieving palpitations. It is used to treat VMC and angina pectoris of coronary heart disease caused by deficiency of both Qi and Yin. However,the understanding of its efficacy evidence, advantageous aspects, dosage and administration, and medication safety remains insufficient in clinical practice. Therefore,the development of the Expert Consensus on the Clinical Application of Qidong Yixin Oral Liquid (hereinafter referred to as consensus) was initiated. Consensus strictly followed the process and methods of the expert consensus on the clinical application of Chinese patent medicines of the China Association of Chinese Medicine,successively completing multiple tasks such as the consensus project initiation,determination of clinical problems,evidence search and evaluation,formation of recommendation opinions and consensus suggestions,solicitation of opinions,peer review, submission for review and release, and so on. Consensus formed a total of 10 recommendation opinions and 12 consensus suggestions,clarifying the clinical positioning,efficacy advantages,syndrome differentiation,dosage and administration,combination therapy,timing of medication,adverse reactions,contraindications, and precautions of Qidong Yixin oral liquid,indicating that it has good clinical advantages and safety in the treatment of VMC and angina pectoris of coronary heart disease,providing norms and references for physicians to safely and rationally apply Qidong Yixin oral liquid. Consensus was reviewed and approved for release by the Standardization Office of the China Association of Chinese Medicine on December 23, 2024. Standard number:GSCACM-376-2024.
2.Efficacy and Application Characteristics of Cold Chinese Medicines Based on Chinese Pharmacopoeia (2020 Edition)
Lu YUE ; Yilong HU ; Jingying YANG ; Xiangxiang WU ; Mingsan MIAO ; Ming BAI
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(4):241-248
ObjectiveTo provide a reference for the rational clinical use of cold Chinese medicines by sorting and analyzing their properties, flavors, meridian tropism, primary therapeutic indications, methods of administration, dosages, and precautions as recorded in the 2020 edition of Pharmacopoeia of the People's Republic of China (Chinese Pharmacopoeia). MethodsCold Chinese medicines for internal and external use included in the 2020 edition of Chinese Pharmacopoeia were entered one by one, and their efficacy, properties, flavors, meridian tropism, methods of administration, dosages, and usage precautions were statistically classified and summarized to guide clinical medication use. ResultsA total of 259 cold Chinese medicines for internal use were included and categorized into 18 efficacy groups, mainly comprising heat-clearing drugs, water-excreting and dampness-draining drugs, and phlegm-resolving, cough- and asthma-relieving drugs. Their predominant flavors were bitter, sweet, and pungent, and they primarily entered the liver, lung, and stomach meridians. The main methods of administration included decocting first, grinding into powder for oral use, or preparing into pills or powders, with most dosages ranging from 9 to 15 g. A total of 83 cold Chinese medicines for external use were included, involving 16 efficacy categories. Their main flavors were bitter, sweet, and pungent, primarily entering the liver, lung, and large intestine meridians. The main external application methods were grinding into powder for topical use or preparing decoctions for fumigation and washing, with most dosages ranging from 9 to 15 g. Whether for internal or external use, cold Chinese medicines should be used with caution or contraindicated in pregnant women. ConclusionThe cold Chinese medicines included in the 2020 edition of the Chinese Pharmacopoeia are mainly suitable for patients with carbuncles, swellings, and coughs. However, in clinical practice, it is necessary to strictly follow the principles of syndrome differentiation and treatment, pay attention to administration methods and dosages, and use cold medicines rationally and effectively to improve clinical efficacy.
3.Quality evaluation of Marsdenia tenacissimae from different producing areas based on multi-component quantitative combined with chemometrics
Yue LONG ; Yang HU ; Ling HE ; Lichao ZHU ; Li SHAO
Journal of China Pharmaceutical University 2026;57(1):46-53
A quantitative method for the analysis of the multi-component contents in Marsdenia tenacissimae was established, and the quality differences were evaluated by principal component analysis (PCA), orthogonal partial least squares-discriminant analysis (OPLS-DA), factor analysis (FA) and weighted technique for order preference by similarity to ideal solution (TOPSIS) method. The contents of chlorogenic acid, cryptochlorogenic acid, sinapic acid, tenacigenoside A, tenacissoside G, tenacissoside I, tenacissoside H, drevogenin A, betulinic acid and lupeol were determined by HPLC wavelength switching method. At the same time, the contents of alcohol-soluble extract and total ash were detected. PCA, OPLS-DA and FA methods were used to identify the origin of M. tenacissimae from different producing areas. According to the OPLS-DA model, the index weight was determined to construct the weighted TOPSIS evaluation model. The qualities of M. tenacissimae from different producing areas were analyzed by model scoring results. The contents of 12 indexes in 18 batches of M. tenacissimae varied to different degrees, and the repeatability and accuracy of the test method were satisfactory. PCA analysis divided 18 batches of M. tenacissimae into three categories. OPLS-DA identified five main potential quality markers, including tenacissoside A, tenacissoside I, lupeol, tenacissoside H and chlorogenic acid. The evaluation results of FA and weighted TOPSIS method were consistent, which showed that the quality of M. tenacissimae from Yunnan and Guizhou was better. The established multi-component quantitative analysis method is accurate and reliable, the chemometrics model has strong predictive ability, and the evaluation results of FA and weighted TOPSIS method are scientific and objective. The combination of the four methods can clearly determine the qualities of M. tenacissimae from different producing areas.
4.Evaluation of the quality of Jingangteng capsules based on UPLC fingerprinting combined with multi-component content determination
Li SHEN ; Yue SHEN ; Yuying YANG ; Dandan ZHANG ; Yuxi WU ; Xuxiang ZHOU ; Jingyu YANG ; Peng HU ; Lei WANG ; Heming WU ; Dan LIU ; Xiaochuan YE
China Pharmacy 2026;37(10):1290-1294
OBJECTIVE To establish the UPLC fingerprint and the method for multi-component content determination in Jingangteng capsules, and to evaluate its quality by combining chemical pattern recognition analysis. METHODS An UPLC method was established. Separation was performed on a Zorbax SB-C 18 Rapid Resolution HD column, with acetonitrile-0.1% formic acid as the mobile phase for gradient elution.Using the Similarity Evaluation System for Chromatographic Fingerprints of Traditional Chinese Medicines (2012 edition), UPLC fi ngerprints were established for 10 batches of Jingangteng capsules, and similarity was evaluated. SPSS 22.0 and SIMCA 14.1 software were used to perform hierarchial-cluster analysis and orthogonal partial least squares discriminant analysis (OPLS-DA), respectively. The same UPLC method was employed to determine the contents of chlorogenic acid, 3,5-dihydroxy-2-methylbenzoic acid-3- O -glucoside (M1), caffeic acid, astilbin, oxyresveratrol, quercitrin and resveratrol in the 10 batches of samples. RESULTS A total of 17 common peaks were identified in UPLC fingerprints of the 10 batches of samples, of which 7 were identified as chlorogenic acid, M1, caffeic acid, astilbin, oxyresveratrol, quercitrin, and resveratrol. The similarities of 10 batches of samples ranged from 0.820 to 0.985. The results of hierarchial-cluster analysis showed that 10 batches of samples were grouped into four categories: S1-S4 formed one group, S5 and S6 formed another, S7, S8 and S10 formed a third, and S9 formed a fourth, consistent with the OPLS-DA results; the variable importance projection values for peaks 7, 10, 2, 16 (resveratrol), 13 (oxyresveratrol), 11, 6 (caffeic acid), 5 (M1) and 15 (quercitrin) were >1. Quantitative analysis results showed that the contents of chlorogenic acid, M1, caffeic acid, astilbin, oxyresveratrol, quercitrin, and resveratrol were 1.650 8-4.213 7, 0.636 2-2.161 7, 0.031 0-0.086 5, 0.239 1-1.069 3, 0.211 9-1.104 0, 0.488 8-2.399 2, and 0.164 0-0.699 8 mg/g, respectively. CONCLUSIONS UPLC fingerprint and content determination methods established in this study are simple to operate, accurate, reliable and reproducible; when combined with chemical pattern recognition analysis, they can be used to evaluate the quality of Jingangteng capsules. Nine components, such as resveratrol, oxyresveratrol, caffeic acid, M1 and quercitrin, may serve as markers of quality variation.
5.Prediction factors of dual-task gait function improvement through short-term aerobic training in patients with Parkinson's disease
Yang JIAO ; Xinru HU ; Weijia HOU ; Yue WANG ; Jin WANG ; Yang YU ; Zhizhong ZHU ; Ying DONG
Chinese Journal of Rehabilitation Theory and Practice 2026;32(6):699-707
ObjectiveTo construct a prediction model for high responsiveness to short-term aerobic training in patients with Parkinson's disease (PD) based on dual-task gait assessment, and to provide evidence for identifying individuals who are most likely to benefit from such interventions. MethodsA total of 42 patients with PD who visited the outpatient clinic of Tianjin Huanhu Hospital between August 29, 2023 and December 19, 2024 were enrolled. All participants completed a 4-week home-based aerobic cycling training program and underwent dual-task gait assessments pre- and post-training. Patients were classified into high-response group (n = 12) and low-response group (n = 30) according to whether the improvement in gait speed reached the minimal clinically important difference of 0.1 m/s. The clinical validity of this grouping was verified by comparing differences in cardiopulmonary exercise testing parameters and dual-task gait indicators between the two groups pre- and post-training. Based on baseline characteristics, Firth's penalized maximum likelihood logistic regression was applied to construct a predictive model for high responsiveness, and the discriminative performance of the model was assessed preliminarily. ResultsThe high-response group showed significantly greater improvement in gait speed, step length, cadence and the anaerobic threshold to maximal oxygen uptake ratio after training compared with the low-response group (P < 0.05), confirming the clinical validity of the grouping. The baseline anaerobic threshold to maximal oxygen uptake ratio (OR = 3.348), body mass index (OR = 2.229) and age (OR = 0.428) demonstrated certain discriminative ability in the present sample. The area under the receiver operating characteristic curve was 0.831, with an overall prediction accuracy of 81.0%, specificity of 83.3% and sensitivity of 75.0%. Robustness of the model was confirmed via internal validation using the Bootstrap method, which suggested that the results were informative, but further validation was still required. ConclusionThe anaerobic threshold/maximal oxygen uptake ratio, body mass index and age may predict the response to short-term aerobic training in patients with PD.
6.Study on antidepressant effects and mechanisms of total triterpenes from Poriae Cutis
Li SHEN ; Yuying YANG ; Jingyu YANG ; Yue SHEN ; Peng HU ; Yuxi WU ; Dan LIU ; Xiaochuan YE
China Pharmacy 2026;37(15):2003-2008
OBJECTIVE To investigate the antidepressant effect and underlying mechanism of total triterpenes from Poriae Cutis (PCTT). METHODS UPLC-Q-TOF-MS technology was adopted to analyze the chemical constituents of PCTT. Network pharmacology was applied to screen the antidepressant active ingredients, key targets and signaling pathways of PCTT, and molecular docking was performed to verify the binding capacity between potential active ingredients and core targets. In animal experiment, mice were intragastrically administered PCTT at doses of 80, 160 and 320 mg/kg for 14 consecutive days. Lipopolysaccharide was used to establish an acute depression mouse model. Subsequently, behavioral assays were conducted. The levels of serum inflammatory factors, hippocampal neurotransmitters and brain-derived neurotrophic factor (BDNF) were detected. Western blot and qPCR assays were adopted to validate the antidepressant mechanism of PCTT. RESULTS A total of 101 chemical constituents were identified in PCTT. Network pharmacology screened out 10 potential active ingredients (including poriacosone B, poriacosone A, pachymic acid, etc.), six core targets [including tumor necrosis factor (TNF), peroxisome proliferator-activated receptor, caspase-3, etc.], as well as multiple signaling pathways including TNF and interleukin-17 (IL-17). All 10 potential active ingredients exhibited strong binding affinity to the six core targets. Animal experimental results demonstrated that 320 mg/kg PCTT markedly increased the movement distance and movement speed of depression model mice (P<0.05), and shortened immobility time in tail suspension test and forced swimming test (P<0.05). PCTT reduced serum levels of IL-6, IL-1β and TNF-α, decreased hippocampal glutamate level; it also downregulated the relative mRNA expression of TNF-α, tumor necrosis factor receptor-2 (TNFR2), phosphoinositide 3-kinase (PI3K) and protein kinase B (AKT), as well as TNFR2 protein expression and the ratios of phosphorylated-PI3K/PI3K,phosphorylated-AKT/AKT in the prefrontal cortex. Meanwhile, PCTT elevated the levels of 5- hydroxytryptamine, dopamine and BDNF in the hippocampus. CONCLUSIONS PCTT exerts antidepressant effects possibly by regulating the TNF-α/PI3K/AKT signaling pathway to downregulate the expression of pro-inflammatory factors, thereby modulating the release of neurotransmitters and BDNF.
7.Effect of Zhinao Capsules on Mild and Moderate Sleep Disorders in Alzheimer's Disease Patients with Syndrome of Spleen-kidney Deficiency and Combined Phlegm and Stasis
Hu XI ; Wenming YANG ; Wenting XIE ; Yue YANG ; Shu ZHAI ; Hao LI ; Yulong YANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(20):171-180
ObjectiveTo observe the clinical efficacy and safety of Zhinao capsules in the treatment of mild and moderate sleep disorders in Alzheimer's disease patients with the syndrome of spleen-kidney deficiency and combined phlegm and stasis. MethodsA randomized, double-blind, placebo, controlled clinical trial design was adopted, and 60 Alzheimer's disease patients aged 50-85 years with mild and moderate sleep disorders due to spleen-kidney deficiency and combined phlegm and stasis were included. According to the randomized numble table method, the patients were assigned into a treatment group and a control group (30 in each group, with 29 patients in the treatment group and 28 patients in the control group finally completing the trial). The treatment group was treated with donepezil hydrochloride tablets combined with Zhinao capsules, and the control group was treated with donepezil hydrochloride tablets combined with the simulant of Zhinao capsules for 12 weeks. The Pittsburgh sleep quality index (PSQI), smart bracelet sleep monitoring, epworth sleeping scale (ESS), Mini-Mental State Examination (MMSE), Activities of Daily Living (ADL), and traditional Chinese medicine symptoms were scored. Furthermore, the brain-derived neurotrophic factor (BDNF) and gamma-aminobutyric acid (GABA) levels were measured. ResultsAfter 12 weeks of treatment, the total response rate of clinical efficacy assessment in the treatment group reached 89.7%, which was significantly higher than that (21.4%) in the control group (Z=-5.14, P<0.01). After treatment, the TCM symptom scores declined in both groups (P<0.01), and the scores in the treatment group were lower than those in the control group (P<0.01). After treatment, the treatment group showed decreased total score and seven component scores of the PSQI scale (P<0.05, P<0.01), and the scores in the treatment group were lower than those in the control group (P<0.05, P<0.01). After treatment, the treatment group showed increases in the duration of deep sleep, light sleep, rapid eye movement sleep, and total sleep at night and decreases in the time to fall asleep, the number of awakenings from sleep at night, and the time for sporadic daytime naps (P<0.01). The control group did not show significant changes in the duration of light sleep, time to fall asleep, and number of awakenings from sleep at night. Moreover, the treatment group outperformed the control group in terms of the indicators above (P<0.05, P<0.01). After treatment, the treatment group showed decreased scores of ESS, ADL and its subscales physical self-maintenance scale (PSMS), and Instrumental Activities of daily living scale (IADLs) and increased score of MMSE and levels of BDNF and GABA (P<0.05, P<0.01). There was no significant difference in PSMS between the two groups, and the treatment group was significantly better than the control group in terms of the rest of the above indicators (P<0.05, P<0.01). Patients in neither groups complained of uncomfortable symptoms. ConclusionZhinao capsules have significant clinical efficacy in treating patients with mild and moderate sleep disorders in Alzheimer's disease patients with the syndrome of spleen-kidney deficiency and combined phlegm and stasis. Zhinao capsules can significantly reduce PSQI, ESS, and ADL scores, increase the MMSE score and the expression of BDNF and GABA, effectively optimize the structure of sleep, improve the intelligence, and enhance the ability of daily life, without causing uncomfortable symptoms. The mechanism may be related to the increase in the expression of sleep/wake-related neurotransmitters.
8.Effect of Zhinao Capsules on Mild and Moderate Sleep Disorders in Alzheimer's Disease Patients with Syndrome of Spleen-kidney Deficiency and Combined Phlegm and Stasis
Hu XI ; Wenming YANG ; Wenting XIE ; Yue YANG ; Shu ZHAI ; Hao LI ; Yulong YANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(20):171-180
ObjectiveTo observe the clinical efficacy and safety of Zhinao capsules in the treatment of mild and moderate sleep disorders in Alzheimer's disease patients with the syndrome of spleen-kidney deficiency and combined phlegm and stasis. MethodsA randomized, double-blind, placebo, controlled clinical trial design was adopted, and 60 Alzheimer's disease patients aged 50-85 years with mild and moderate sleep disorders due to spleen-kidney deficiency and combined phlegm and stasis were included. According to the randomized numble table method, the patients were assigned into a treatment group and a control group (30 in each group, with 29 patients in the treatment group and 28 patients in the control group finally completing the trial). The treatment group was treated with donepezil hydrochloride tablets combined with Zhinao capsules, and the control group was treated with donepezil hydrochloride tablets combined with the simulant of Zhinao capsules for 12 weeks. The Pittsburgh sleep quality index (PSQI), smart bracelet sleep monitoring, epworth sleeping scale (ESS), Mini-Mental State Examination (MMSE), Activities of Daily Living (ADL), and traditional Chinese medicine symptoms were scored. Furthermore, the brain-derived neurotrophic factor (BDNF) and gamma-aminobutyric acid (GABA) levels were measured. ResultsAfter 12 weeks of treatment, the total response rate of clinical efficacy assessment in the treatment group reached 89.7%, which was significantly higher than that (21.4%) in the control group (Z=-5.14, P<0.01). After treatment, the TCM symptom scores declined in both groups (P<0.01), and the scores in the treatment group were lower than those in the control group (P<0.01). After treatment, the treatment group showed decreased total score and seven component scores of the PSQI scale (P<0.05, P<0.01), and the scores in the treatment group were lower than those in the control group (P<0.05, P<0.01). After treatment, the treatment group showed increases in the duration of deep sleep, light sleep, rapid eye movement sleep, and total sleep at night and decreases in the time to fall asleep, the number of awakenings from sleep at night, and the time for sporadic daytime naps (P<0.01). The control group did not show significant changes in the duration of light sleep, time to fall asleep, and number of awakenings from sleep at night. Moreover, the treatment group outperformed the control group in terms of the indicators above (P<0.05, P<0.01). After treatment, the treatment group showed decreased scores of ESS, ADL and its subscales physical self-maintenance scale (PSMS), and Instrumental Activities of daily living scale (IADLs) and increased score of MMSE and levels of BDNF and GABA (P<0.05, P<0.01). There was no significant difference in PSMS between the two groups, and the treatment group was significantly better than the control group in terms of the rest of the above indicators (P<0.05, P<0.01). Patients in neither groups complained of uncomfortable symptoms. ConclusionZhinao capsules have significant clinical efficacy in treating patients with mild and moderate sleep disorders in Alzheimer's disease patients with the syndrome of spleen-kidney deficiency and combined phlegm and stasis. Zhinao capsules can significantly reduce PSQI, ESS, and ADL scores, increase the MMSE score and the expression of BDNF and GABA, effectively optimize the structure of sleep, improve the intelligence, and enhance the ability of daily life, without causing uncomfortable symptoms. The mechanism may be related to the increase in the expression of sleep/wake-related neurotransmitters.
9.Process Optimization and Health Risk Assessment of Calcined Haematitum Based on QbD Concept
Yue YANG ; Jingwei ZHOU ; Jialiang ZOU ; Guorong MEI ; Yifan SHI ; Lei ZHONG ; Jiaojiao WANG ; Xuelian GAN ; Dewen ZENG ; Xin CHEN ; Lin CHEN ; Hongping CHEN ; Shilin CHEN ; Yuan HU ; Youping LIU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(13):187-196
ObjectiveTo investigate the processing technology of calcined Haematitum based on the concept of quality by design(QbD) and to assess its health risk. MethodsTaking whole iron content, Fe2+ dissolution content and looseness as critical quality attributes(CQAs), and calcination temperature, calcination time, spreading thickness and particle size as critical process parameters(CPPs) determined by the failure mode and effect analysis(FMEA), the processing technology of calcined Haematitum was optimized by orthogonal test combined with analytic hierarchy process-criteria importance through intercriteria correlation(AHP-CRITIC) hybrid weighting method. The contents of heavy metals and harmful elements were determined by inductively coupled plasma mass spectrometry, and the health risk assessment was carried out by daily exposure(EXP), target hazard quotient(THQ) and lifetime cancer risk(LCR), and the theoretical value of the maximum limit was deduced. ResultsThe optimal processing technology for calcined Haematitum was calcination at 650 ℃, calcination time of 1 h, particle size of 0.2-0.5 cm, spreading thickness of 1 cm, and vinegar quenching for 1 time[Haematitum-vinegar(10:3)]. The contents of 5 heavy metals and harmful elements in 13 batches of calcined Haematitum were all decreased with reductions of up to 5-fold. The cumulative THQ of 2 batches of samples was>1, while the cumulative THQ of all batches of Haematitum was>1. The LCR of As in 1 batches of Haematitum was 1×10-6-1×10-4, and the LCR of the rest was<1×10-6, and the LCRs of calcined Haematitum were all<1×10-6, indicating that the carcinogenic risk of calcined Haematitum was low, but special attention should still be paid to Haematitum medicinal materials. Preliminary theoretical values of the maximum limits of Cu, As, Cd, Pb and Hg were formulated as 1 014, 25, 17, 27, 7 mg·kg-1. ConclusionThe optimized processing technology of calcined Haematitum is stable and feasible, and the contents of heavy metals and harmful elements are reduced after processing. Preliminary theoretical values of the maximum limits of Cu, As, Cd, Pb and Hg are formulated to provide a scientific basis for the formulation of standards for the limits of harmful elements in Haematitum.
10.Optimization of Processing Technology of Calcined Pyritum Based on QbD Concept and Its XRD Fingerprint Analysis
Xin CHEN ; Jingwei ZHOU ; Haiying GOU ; Lei ZHONG ; Tianxing HE ; Wenbo FEI ; Jialiang ZOU ; Yue YANG ; Dewen ZENG ; Lin CHEN ; Hongping CHEN ; Shilin CHEN ; Yuan HU ; Youping LIU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(13):197-205
ObjectiveBased on the concept of quality by design(QbD), the processing process of calcined Pyritum was optimized, and its X-ray diffraction(XRD) fingerprint was established. MethodsThe safety, effectiveness and quality controllability of calcined Pyritum were taken as the quality profile(QTPP), the color, hardness, metallic luster, phase composition, the contents of heavy metals and hazardous elements were taken as the critical quality attributes(CQAs), and the calcination temperature, calcination time, paving thickness and particle size were determined as the critical process parameters(CPPs). Differential thermal analysis, X-ray diffraction(XRD) and inductively coupled plasma mass spectrometry(ICP-MS) were used to analyze the correlation between the calcination temperature and CQAs of calcined Pyritum. Then, based on the criteria importance through intercriteria correlation(CRITIC)-entropy weight method, the optimal processing process of calcined Pyritum was optimized by orthogonal test. Powder XRD was used to analyze the phase of calcined Pyritum samples processed according to the best process, and the mean and median maps of calcined Pyritum were established by the superposition of geometric topological figures, and similarity evaluation and cluster analysis were carried out. ResultsThe results of single factor experiments showed that the physical phase of Pyritum changed from FeS2 to Fe7S8 during the process of temperature increase, the color gradually deepened from dark yellow, and the contents of heavy metals and harmful elements decreased. The optimized processing process of calcined Pyritum was as follows:calcination temperature at 750 ℃, calcination time of 2.5 h, paving thickness of 3 cm, particle size of 0.8-1.2 cm, vinegar quenching 1 time[Pyritum-vinegar(10∶3)]. After calcination, the internal structure of Pyritum was honeycomb-shaped, which was conducive to the dissolution of active ingredients. XRD fingerprints of 13 batches of calcined Pyritum characterized by 10 common peaks were established. The similarities of the relative peak intensities of the XRD fingerprints of the analyzed samples were>0.96, and it could effectively distinguish the raw products and unqualified products. ConclusionTemperature is the main factor affecting the quality of calcined Pyritum. After processing, the dissolution of the effective components in Pyritum increases, and the contents of heavy metals and harmful substances decrease, reflecting the function of processing to increase efficiency and reduce toxicity. The optimized processing process is stable and feasible, and the established XRD fingerprint can be used as one of the quality control standards of calcined Pyritum.

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