1.Stability of Compound Flavone Capsules
Chinese Traditional Patent Medicine 1992;0(07):-
AIM: To determine the thermo-stability of quercetin in Compound Flavone Capsules in order to predicate the capsules's shelf life. METHODS: The quercetin content in Compound Flavone Capsules was determined by HPLC and its stability was determined by the accelerate test with constant temperature method. RESULTS: The shelf-life of Compound Flavone Capsules was 2.5 years. CONCLUSION: The methods adopted in the study are simple and convenient and Compound Flavone Capsules have good stability.
2.Optimization of the Formula of Ginkgo Flavone Tablets
China Pharmacy 1991;0(01):-
OBJECTIVE:To optimize the formula of Ginkgo flavone tablets.METHODS:The effects of dextrin,CMS-Na,microcrystalline cellulose and L-HPC on the quality of Ginkgo flavone tablets were studied.RESULTS:The results showed that the optimum formula was 5% L-HPC Ginkgo flavone.Tablet prepared with this optimum formula was much better in terms of disintegrantion.CONCLUSION:The formula is reasonable and the preparation technic simple.The prepared tablets are suitable for clinical use.
3.Study on Relationship between Antimicrobial Consumption and Resistance of Escherichia Coli in Our Hos-pital
China Pharmacist 2014;(5):822-824
Objective:To investigate the relationship between antimicrobial consumption and resistance of Escherichia coli. Meth-ods:The total antibiotics use density( AUD) and the synchronous resistance rate of Escherichia coli were studied and the correlation between them was analyzed retrospectively using multiple linear regression analysis in our hospital from 2010 to 2012. Results:The re-sistance rate of Escherichia coil to ceftazidime,cefotaxime and aztreonam were negatively correlated with the consumption of piperacillin/tazobactam (r= -0. 700,-0. 717, -0. 647,P<0. 05). A significant positive correlation was found between the resistance rate to ceftazidime and cefotaxime and the consumption of ceftazidime(r=0. 662,0. 601,P<0. 05). The resistance rate to imipenem had a significant positive correlation with the consumption of imipenem(r=0. 685,P<0. 05) as well. Conclusion:A relationship exists be-tween antimicrobial consumption and resistance rate of Escherichia coil. It is necessary to strengthen the management of microbacterial rational use to control and reduce the increase of bacterial resistance.
4.Optimization of the Formula of Compound Ginkgo Leaves Tablets by Orthogonal Experiment
China Pharmacy 2001;0(10):-
OBJECTIVE:To optimize the formula of the compound ginkgo leaves tablets.METHODS:The formula(dosage of low-substituted hydroxypropyl cellulose;the ratio between crude drug and loading agent and the dosage of micro-crystalline cellulose)was optimized using orthogonal design and multi-index(tablet weight variation and disintegration de-gree)comprehensive score method.RESULTS:The optimized formula was the following:the dosage of low-substituted hy-droxypropyl cellulose was5%;the ratio between crude drug and loading agent was1∶1and the dosage of microcrystalline cellulose was10%.CONCLUSION:The tablets are reasonable in formula and the forming quality of which is also good.
6.Pharmaceutical Care for the Inpatients with Intracranial Infection after Craniotomy
Hualing WEI ; Ying CHEN ; Xiaoyu CHEN
China Pharmacy 2005;0(18):-
OBJECTIVE: To discuss therapy regimes and pharmaceutical care for the inpatient with intracranial infection after craniotomy. METHODS: Clinical cases were taken as example and therapy regimes was analyzed in order to put out full range and individualized pharmaceutical care for patients with intracranial infection after craniotomy. RESULTS: Reasonable medication was provided by implementing pharmaceutical care. CONCLUSION: It is necessary to deliver pharmacetical care to the inpatient with intracranial infection after craniotomy.
7.Determination of the Dissolution of Compound Flavone Capsule by HPLC
Hualing WEI ; Xiaoyu CHEN ; Yi LI
China Pharmacy 2007;0(27):-
OBJECTIVE:To determinate the dissolution of Compound Flavone capsules by HPLC.METHODS:Nova-Pak C18(250mm? 4.0mm,5? m) column was used with column at room temperature.The mobile phase consisted of methanol-0.4% H3PO4(50:50) at a flow rate of 1.0mL? min-1.The detective wavelength was 360nm.The dissolution of the Compound Flavone capsules was determined by basket stirring technique with 0.1mol? L-1 hydrochloric acid as dissolvent at a speed of 100r? min-1.RESULTS:The cumulative dissolution rate of Compound Flavone capsules was above 80% at 30 minutes.The linear range of Quercetin was 0.065 84~ 0.658 4?g(r=0.999 9).The average recovery was 99.35%,RSD=0.92%(n=6).CONCLUSION:The method is simple,accurate and reproducible,and suitable for the guality control of Compound Flavone capsules.
8.Quality standard for Kudingcha Tablets
Mei LU ; Yanping RONG ; Daping MENG ; Hualing WEI
Chinese Traditional Patent Medicine 1992;0(03):-
AIM: To establish a quality standard for Kudingcha Tablets(Cratoxylum Prunifolium Dyer). METHODS: TLC was adopted for identification of Kudingcha Tablets.RP-HPLC was used to determine the contents of ursolic acid,quercetin and kaempferol in the preparation.The Nova-Pak C_(18) column(3.9 mm?150 mm,4.0 ?m) was used to determine the ursolic acid of content.The mobile phase was methanol-water-H_3PO_4(85∶15∶0.1).The detection wavelength was at 220 nm.The flow rate was 0.8 mL/min and the temperature was at 30 ℃.The Nova-Pak C_(18) column(3.9 mm?300 mm,4.0 ?m) was used to determine the contents of quercetin and kaempferol.The mobile phase was methanol-0.4%H_3PO_4(50:50).The detection wavelength was at 360 nm.The flow rate was 0.7 mL/min.The temperature was at 40 ℃. RESULTS: A good linear relation was obtained when the sample size of ursolic acid was in the range of 0.334-6.672 ?g.The linear range of quercetin was(0.012 99-0.649 6) ?g and the linear range of kaempferol was 0.013 34-0.667 2 ?g.The average recoveries of ursolic acid,quercetin and kaempferol were 97.70%,96.89% and 97.41%,respectively.The RSD were 0.87%,(1.06%) and 1.40%(n=6),respectively. CONCLUSION: This standard is accurate and reliable,and can effectively control the quality of Kudingcha Tablets.
9.Determination of Puerarin in Compound Ginkgo Biloba Tablets by RP-HPLC
Hongping PAN ; Hualing WEI ; Daping MENG ; Mei LU
China Pharmacy 2005;0(15):-
OBJECTIVE:To determine the content of Puerarin in Compound Ginkgo biloba tablets by RP-HPLC. METHODS:The determination was performed on Kromasil C18 column. The mobile phase consisted of methanol-water (20∶80) with a flow rate of 1mL?min-1. The detection wavelength was 250 nm and the temperature of the column was 35℃. RESULTS:The linear range of Puerarin was 0.8~2.4?g (r=0.999 3, n=5),with the average recovery at 99.98%,RSD=1.31%(n=5).CONCLUSION:The method is simple,sensitive and reproducible,and it can be used for the quality control of Compound Ginkgo biloba tablets.
10.Enrichment and Separation of Y(Ⅲ) from Dilute Solutions Using Aliquat 336 Functionalized Chelating Adsorbent Derived from Chitosan
Hongmin CUI ; Ji CHEN ; Hualing YANG ; Wei WANG ; Yu LIU ; Yuefeng DENG ; Dongli ZHANG
Chinese Journal of Analytical Chemistry 2014;(3):446-451
Aliquat 336 functionalized chelating adsorbent derived from chitosan for enrichment and separation of Y(Ⅲ) were investigated by static adsorption method. The adsorption of Y(Ⅲ) was greatly influenced by the pH of solution, and reached maximum at 20 ℃ using 90 mg/L Y(Ⅲ) at pH 4. 9, and the adsorption of Y(Ⅲ) followed a pseudo-second-order kinetics model and the Langmuir isotherm model. The reduction of Y(Ⅲ) adsorption with the increasing of temperature meant that the adsorption process was exothermic. XPS analysis demonstrated that both cations and anions of the adsorbent were involved in adsorption process, thereby resulting in an improved adsorption of Y(Ⅲ). The adsorbent was thus efficient for enrichment and separation of rare earths from waste rare earth phosphor.