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Objective To study the chemical constituents from Pericarpium Citri Reticulatae (Citrus reticulata). Methods The chemical constituents were isolated and purified by silica gel column, Sephadex LH-20, and ODS column chromatography. The structures were identified by spectral data. Results Nineteen compounds were isolated and identified as 4′,5,6,7-tetramethoxyflavone (1), 3,3′,4′,5,6,7,8-heptmethoxyflavone (2), sinensetin (3), 5-O-demethylnobiletin (4), tangeretin (5), nobiletin (6), apigenin (7), 5-O-desmethyltangeretin (8), 5,7-dihydroxy-3,3′,4′,6-tetramethoxyflavone (9), pachypodol (10), 4′,5,6,7-tetramethoxyflavanone (11), 3′,4′,5,7,8-pentamethoxyflavanone (12), agestricin C (13), scoparone (14), isoscopoletin (15), hesperidin (16), didymin (17), methylhesperidine (18), and naringin (19). Conclusion Compounds 9-15 are obtained from this plant for the first time.
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Guangdong Pericarpium Citri Reticulatae is the traditional Chinese herbal medicine, and has been used for a long history. The authentic drug name Guangdong Pericarpium Citri Reticulatae was rare in the Song Dynasty literature, but from the textual research of the authors, it was otherwise nicknamed as "real orange peel" or "real tangerine peel". These two names were ahead of the origin of Guangdong Pericarpium Citri Reticulatae. Some scholars believe that the name Guangdong Pericarpium Citri Reticulatae was from the Ming Dynasty Dr. Lishizhen's Compendium of Materia Medica. Guangdong Pericarpium Citri Reticulatae has always had the bulk sales of Guangdong medicines and has been sold at home and abroad, with popularity among the doctors and the masses. In 2016, it was selected as one of 8 Lingnan herbal medicines in the first legislative protection medicines in Guangdong province. Xinhui Pericarpium Citri Reticulatae is the top grade of Guangdong Pericarpium Citri Reticulatae, and these two can often refer to each other. Especially in Qing Dynasty, Guangdong Pericarpium Citri Reticulatae often referred to Xinhui Pericarpium Citri Reticulatae. Therefore, they have a common development grain, but Xinhui Pericarpium Citri Reticulatae has a unique history of genuine regional drug. In October 2006, the National Quality Inspection Administration formally approved and announced that Xinhui Pericarpium Citri Reticulatae as one of national geographical indication products.
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Objective To studyeffect of different processes for preparation ofβ- cyclodextrin inclusion pericarpium citri reticulatae - Radix Aucklandiae essential oil.Methods Extract pericarpium citri reticulatae-radix aucklandiae essential oil with steam distillation method, conductβ- cyclodextrin inclusion of pericarpium citri reticulatae-radix Aucklandiae essential oil with ultrasonic method, grinding method andsaturated aqueous solution method, and detect inclusion effect respectively by polarized light microscopy observation method and TG-DTA analysis method.Results Polarized lightphenomenon disappears under a microscope for the three inclusion preparation products, and TG-DTA curve of ultrasound method is superior to that of saturated aqueous solution method and grinding method.Conclusion Polarized light microscope observation method and TG-DTA method enjoysa good effect in determination of cyclodextrin inclusion, which provides a new method for determination of cyclodextrin inclusion results.
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Objective: To optimize the infiltration process of Pericarpium Citri Reticulatae (PCR) in Huoxiang Zhengqi Liquid (HZL). Methods: Using the dissolution content of hesperidin as indicator, the infiltration process parameters for PCR such as soaking time, fineness of grind, degree of compaction, infiltration rate, and medicinal infiltration or not were studied, and considering the actual production efficiency, the optimal process conditions were determined. Results: The optimal infiltration process conditions were as follows: PCR was loaded into the extraction tank without soaking (there was no difference between 24 and 48 h of soaking time), spread evenly and compacted properly; The crude medicine fineness was about 0.5 cm × 0.5 cm; The infiltration solvent was 60% ethanol; The infiltration solvent was added to the extraction tank of crude medicines, the volume of solvent can not be too much, just inundating crude medicines; Adding solvent speed and infiltration speed were basically identical; The primary infiltration speed was 1 mL/(min·kg) and the continued infiltration speed was 2 mL/(min·kg). Conclusion: The optimal PCR infiltration process conditions of HZL are determined by evaluating the dissolution content of hesperidin.
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OBJECTIVE:To establish the quality standard for Xiaoer Zhike oral liquid(XZOL).METHODS:The Herba Ephedrae,Pericarpium Citri Reticulatae and Radix Glycyrrhizae in XZOL were identified by TLC.The chlorogenic acid in the liquid was determined by HPLC,The mobile phase was methanol-water(10∶90)with a flow rate of1ml/min,the detection wavelength was254nm.RESULTS:The Herba Ephedrae,Pericarpium Citri Reticulatae and Radix Glycyrrhizae in XZOL could be identified on TLC chromatograms.The linear range of chlorogenic acid was0.2?g～1.2?g(r=0.9996),the average recov?ery was96.67%,RSD was1.04%.CONCLUSION:The method is simple,reliable and accurate.The method can be used for quality control of XZOL.
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Objective To observe the protective effects of the extracts of Rhizoma Zingiberis and Pericarpium Citri Reticulatae on myocardial ischemia reduced by isoproterenol(ISO) in rats,and to explore their optimal ratio.Methods Acute myocardial ischemia rat model was established by continuously subcutaneous injection of large-dose.Then the content of the serum creatine kinase(CK) within 24 hours in rats were detected,and the optiaml ratio of Rhizoma Zingiberis and Pericarpium Citri Reticulatae was optimized by uniform design.Results Compared with the control group,the content of CK in the model group was significantly increased(P
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Objective To establish the method for fingerprint analysis of Pericarpium Citri Reticulatae(PCR) by HPLC, and to compare the quality of PCR from different places of Guangdong. Methods HPLC with Zorbax Esclipe XDB C18 column was used. The mobile phase was composed of methanol-2% acetic acid (gradient elution), the detection wavelength was at 283 nm, the column temperature was maintained at 25 ℃ , and the flow rate was 1.0 mL? min-1. Results Seven common peaks were obtained on HPLC fingerprint of PCR. There existed certain differences in fingerprints of PCR from the different samples, but the similarities of 25 batches of samples were higher. Conclusion The method is reliable and accurate, and provides a reference for the quality control of PCR.
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Objective To establish the standard of quality control for Pericarpium Citri Reticulatae Viride (PCRV) and to identify two kinds of PCRV which are collected in different times. Methods In this article,volatile components and flavonoid in 10 batches of samples which were collected from eight provinces were determined by GC and HPLC-DAD,respectively. Their fingerprints were handled by weighted similarity of range and by principal component analysis (PCA). Results According to the result of similarity and classification,there were obvious differences between the two kinds of PCRV.To know whether the differences have great influences on the pharmacological actions of PCRV, pharmacological studies will be needed. Weighted similarity is suitable for this system which has a high content of similar components. Conclusion These methods are effective and will help us to establish the criterion of quality control for PCRV.
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Objective: To study optimum inclusion process conditions for volatile oils from Herba Schizonepetae and Pericarpium Citri Reticulatae Methods : The grinding method was compared with the saturated water solution method by determining the ultilization ratio of volatile oil from both herbs. The optimum preparation conditions were investigated by the orthogonal design. The quality of inclusion compound of volatile oil before and after being included were analyzed by TLC. Results : The optimum preparation conditions for inclusion were established as follow ultilization ?-CD and oil was 8∶ 1, The proportion of water and ?-cyclodextrin was 4∶1 (g:mL), and inclusing time up to three hours, The ultilization ratio of oil was 87.1% . Conclusion : The grinding method is better than the saturated water solution method. The method is applicable.
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To establish the quality standards, the authors identified Semen Arecae and Pericarpium Citri Reticulatae in Xiaoerxiaoshi Tablets with TLC and determined the content of ursolic acid and organic acids with TLC-colorimetry and neutralization method.
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OBJECTIVE:To improve the quality standard for Jianpi cake.METHODS:The pericarpium citri reticulatae and fructus crataegi in this preparation were identified by TLC and hesperidin was determined by HPLC.RESULTS:The peri?carpium citri reticulatae and fructus crataegi in samples were positive in TLC.The average content of hesperidin was0.0186%and the average recovery rate was97.75%(RSD=1.60%).CONCLUSION:The established method is accurate,and provides a method for the quality control of Jianpi cake.