1.Determination of Ginsenoside Rg1 in Changyu Granules by RP-HPLC
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(07):-
Objective To set up a method for the determination of ginsenoside Rg1 in Changyu Granules. Methods The content of ginsenoside Rg1 was determined by RP-HPLC on C18 column (4.6 mm?250 mm, 5 ?m). The mobile phase consisted of ethane nitrile and water (80:20). The flow rate was 1.0 mL/min. The detection wavelength was at 210 nm. Results Ginsenoside Rg1 showed a good linear relationship at the range of 0.125~4 ?g, r =0.999 7. The average recovery rate was 97.30%, RSD=1.31%. Conclusion The method is simple with good reproducibility, and can be used for the quality control of Changyu Granules.
2.Determination of 2,3,5,4′-tetrahydroxystilbene-2-O-?-D-glucoside in Polygonum multiflorum Thumb. and Jiangzhitongmai Tablet by HPLC
Chinese Traditional Patent Medicine 1992;0(12):-
Objective: To establish the assay method of 2,3,5,4′-tetrahydroxystilbene-2-O-?-D-glucoside in Jiangzhitongmai Tablet (Radix Polygoni Multiflori, Rhizoma Alismatis, etc.). Methods:HPLC conditions were as fellows: Chromasil C 18 column, a mobile phase of CH 3CN-H 2O(25∶75), and the wavelength at 320nm. Results:2,3,5,4′-tetrahydroxystilbene-2-O-?-D-glucoside was linear within the range of 0.044~ 0.7 ?g with a correlation coefficient of 0.9999. The average recovery was 98.54%. Conclusion:The method is simple, swift, accurate and practical in quality control of Jiangzhitongmai Tablet.
3.Qualitative and Quantitative Determination of Radix et Rhizoma Rhei and Rhizoma Polygoni Cuspidati in Bingganning Granules
Chinese Traditional Patent Medicine 1992;0(08):-
Objective: To establish the part of quality control standards for Bingganning Granules. Methods: Radix et Rhizoma Rhei and Rhizoma polygoni cuspidati in Binggamning Granules were identified by TLC and polydatin of Rhizoma polygoni cuspidati was determined by HPLC. Results: The content of aloe emodin in Radix et Rhizoma Rhei could be used as a basis of quantitation. The average recovery of polydatin was 97.05%. RSD was 1.625%. The content of polydatin in Bingganning Granules was fixed at least not to low than 4mg/g. Conclusion: The method is simple, quick, accruate and with good reproducibility.
4.Optimization on Extracting Technology of Baige Capsule by Orthogonal Design
Yuntai CAO ; Donglei SHI ; Linmei PAN
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(02):-
Objective To optimize an extracting technology for Fufang Baige capsule. Methods The orthogonal design was used for the inspection of water-extracting process and alcohol-precipitating process. Water volume, extracting time and extracting times were screened as inspection elements for water-extracting process. And liquid concentration, alcohol-precipitating concentration and incubating time were screened as inspection elements for alcohol-precipitating process. The transferring rate of paeoniflorin which is the indicator component in drug-Jun was screened as the inspection indicator for each fraction of extraction process. Results The optimal extraction conditions were as follows:for water- extracting process, that was extracting 2 times with 15-fold water, 2 hours for each time ; For alcohol-precipitating process, that was concentrating liquid to 1.0 g/mL Chinese herbs containing, then adding alcohol untill alcohol concentration ammouted to 70%, and at last putting it static for 18 hours. Conclusion The extracting technology was simple, economical and practical, and was able to increase production efficiency.
5.Thinking and method of "Combinatorial Screening" based on complex systems principle for active components of Chinese materia medica compound
Liwei GUO ; Huaxu ZHU ; Linmei PAN
Chinese Traditional and Herbal Drugs 1994;0(04):-
According to two theories,which are "traditional Chinese medicine researching is in the face of a complex opening gigantic system" and "Chinese materia medica compound(CMMC) is the natural combinatorial chemical libraries",the study on active fractions of CMMC has been facing to a complex system with a large number of data that is non-linear,multi-variable,and varieties related to each other.The thinking and method of "combinatorial screening" has been put forward based on these two theories,that is the principle "using the diverse structures of molecules to simulate the diverse organism" used in combinatorial chemistry and the data mining technique was taken into the study on complex system of CMMC.In order to create combinatorial libraries,the two methods were used to obtain the fractions of CMMC.Re-combination group of the CMMC was used,and various industrial separation techniques, such as resin,membrane,were used to replace the diversity of chemosynthesis routes to create "Building Block".Through data mining and knowledge discovery, the intrinsic correlation of CMMC "multi-components and multi-targets" between the chemical composition and the mechanism was carried out.The new technologies which aim at high-throughput screening of CMMC were explored,in order to provide the evidence for setting up an idea with "optimal separation" and optimization design about application system of refining technology.
6.Effects of Different Transdermal Enhancers on Percutaneous Absorption of Ephedrine in Compound Herba Ephedrae Adhesive Plaster
Linmei PAN ; Jing SHEN ; Liwei GUO
Traditional Chinese Drug Research & Clinical Pharmacology 1993;0(04):-
Objective To investigate the effect of different transdermal enhancers on percutaneous absorption of ephedrine in Compound Herba Ephedrae Adhesive Plaster.Methods Using modified Franz diffusion cell,the ephedrine content was determined to investigate the effect of different transdermal enhancers in promoting percutaneous absorption.Results Azone or azone used together with other transderml enhancers had a better effect in promoting percutaneous absorption,indicating that azone was the leading transderml enhancers for ephedrine.The mixed transdermal enhancer of azone and propylene glycol was the most effective combination and the rate constant of percutaneous absorption is 94.280 ?g?cm-2?h-1.Conclusion The mixture of azone and propylene glycol can enthance the percutaneous absorption of ephedrine and can be used as the transdermal enhancers for this compound plaster.
7.Study on the Quality Standards of Pinellia Heart-Sedating Granules
Jia FU ; Linmei PAN ; Liwei GUO
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(09):-
Objective To establish the quality control standard of Pinellia Heart-Sedating Granules. Methods TLC methods for identifition of Radix Pinellia and Radix Scutellariae were established. A simple HPLC was established for the determination of Berberine hydrochloride. Results The spots on TLC plates were clear without interference in the blank reference. The liner range of Berberine hydrochloride was 0.009375~0.3 ?g,r =0.9 999. The average recovery of Berberine hydrochloride was 101.46% and RSD was 2.88%. Conclusion The method is simple, accruate, reproducible and can be used as the quality control method for Pinellia Heart-Sedating Granules.
10.Exploration and Practice of Pharmaceutical Equipment & Workshop Design by Using the Task-driven Teaching
Linmei PAN ; Cunyu LI ; Huaxu ZHU
China Pharmacy 2016;27(27):3883-3885
OBJECTIVE:To provide reference for the improvement of Pharmaceutical Equipment & Workshop Design teach-ing. METHODS:Task-driven teaching was adopted,CIDO engineering educational model was referred to,task was designed from the conception to run with task-based;theoretical and teaching exploration and practice was carried out by cross-learning of individ-uals and groups,applying of pilotscale experiment platform,developing course design and forming evaluation. RESULTS & CON-CLUSIONS:It changed the traditional teaching method that emphasized on class teaching to make students participate in multi-task learning,so that students can better grasp the equipment selection,understanding and application of workshop design in pharmaceu-tical process. The method gives full play to students' initiative and creativity and it is conducive to students’comprehensive ability for adapting the development of pharmaceutical industry.