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Objective:To search the release in vitro of new MU-AN ophthalmic gel consist of ganciclovir instead of aciclovir is whether better than the Old. Methods:Using the content of ganciclovir and acyclovir as the index, taking the second oar method ( in Ch. P 2010), drug release in vitro test was investigated. Results:The character of drug release of new MU-AN ophthalmic gel was e-qual to the old, the rate of drug release was similar, The amount of drug release was the same. Both drugs met the requirements of clin-ical medication. The character corneal permeability of new MU-AN ophthalmic gel was better than the old. Gel matrix had no influ-ences on drug release, drug would be bring treatment effect after the way that it was released quickly then was dissolved in tear. Con-clusion:The drug release characteristics consistent with ophthalmic preparation requirements. The character of drug release of new MU-AN ophthalmic gel consist of ganciclovir instead of aciclovir is equal to the old, the time administer drug and interval time is gener-ally scientific, reasonable and feasible, providing the basis for the pharmacodynamics , toxicology and clinical study in the next step.
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OBJECTIVE: To study the induction and growth of Magnolia officinalis Rehd.et Wils.var.biloba Rehd.et Wils. callus and to compare the content of active components in callus from different sources.METHODS: The factors influencing the induction and growth of Magnolia officinalis Rehd.et Wils.var.biloba Rehd.et Wils. callus were studied by single factor analysis and orthogonal design. The contents of active components in callus from different sources were determined by HPLC. RESULTS: In the various explants, the apical buds and stem fragments exhibited the best ability of dedifferentiation to form callus, followed by pistils. The optimum culture medium of the callus induction was B5+NAA0.1 mg?L-1+6-BA1.0 mg?L-1, while the culture medium B5+NAA0.5 mg?L-1+6-BA4.0 mg?L-1 markedly improved the growth of the callus; after secondary culture of the callus induced by the WPM basic medium, the total content of Magnolol plus Honokiol ranged from 0.167 9% to 0.234 4%, but the induction rate of the callus was low at 33.08%～48.65%. Under the culture condition of MS+NAA0.5 mg?L-1+6-BA1.0 mg?L-1,the rate of callus induction was 62.12% and the total content of Magnolol plus Honokiol after secondary culture was 0.168 6%. CONCLUSION: The results serve as reference in the tissue culture of Magnolia officinalis Rehd.et Wils.var.biloba Rehd.et Wils and the screening of the high production cell line.
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OBJECTIVE: To establish a HPLC method for the determination of Paeonol in Yuxianling granules. METHODS: The determination was performed on Phenomenex C18-ODS with mobile phase consisted of methanol-water (60∶40) at a flow rate of 1.0mL?min-1. The detection wavelength was set at 274nm. RESULTS: The linear range of Paeonol was 8.24～41.20?g?mL-1(r=0.999 7). The recovery was 99.50% (RSD=1.12%). CONCLUSION: The established method is simple, rapid, sensitive, accurate, stable and reproducible, and suitable for the determination of the content of paeonol in Yuxianling granules.
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OBJECTIVE: To establish a method for the determination of aesculin and aesculetin in Jiuxiang zhixie tablets.METHODS: HPLC method was developed to quantitative determination.Thermo C18(250 mm?4.60 mm,5?m) column was adopted.The mobile phase consisted of acetonitrile-0.1%H3PO4(12 ∶ 88)with flow rate of 1.0 mL?min-1 and the detection wavelength of 334 nm.The column tempreture was set at 30℃.RESULTS: The linear range of aesculin was 80～800 ng(r=0.999 8).The average recovery was 100.1%(RSD=1.89%,n=9).The linear range of aesculetin was 32.96～329.6 ng(r=0.999 5).The average recovery of aesculetin was 101.5%(RSD=2.42%,n=9).CONCLUSION: The method is simple,accurate for the content determination of Jiuxiang zhixie tablet.
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OBJECTIVE:To explore the effect of different extraction methods on the content of berberine hydrochloride in Rhizoma Coptis.METHODS:Berberine hydrochloride in Rhizoma Coptis was extracted respectively by China Pharmacopoeia extraction method,reflux method,ultrasound wave method and refluxing&ultrasonic wave extracting method,and the content of which was determined by HPLC.RESULTS:There were significant differences in the extraction content of berberine hydr_ ochloride between the extraction method stated in China Pharmacopoeia and the other extraction methods(P
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Object To optimize the process for the extraction of the original recipe used in the treatment of eczema to give a new ECZEMA SPRAY dosage form Methods The extraction process was studied by orthogonal experimental design as guided by determining the content of paeonol and baicalin in the extract Results The optimal extraction process was to reflux the original recipe with 80% ethanol twice at a bath temperature of about 90 ℃ for 1 5 and 1 0 h respectively The amount of ethanol used for each extraction was 10 and 8 times of the original recipe respectively Conclusion The above extraction process gave the most rational and satisfactory results
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AIM: To specify optimization of the concentration, purification and drying for prepar ati on of Yuxianling Grannles and decrease the dosage on condition that is retentive of potency in order to provide a basis for mass production. METHODS: The contents of ferulic acid and the amount of extract wer e used as marker, the optimium of concentration, purification and drying for pr eparation were selected by orthogonal design and contrast test during aqueous ex tract alcohol precipitation process. RESULTS: Condition was optimum of herb-to-extract ratio in the range of 0.5 ∶1, pr ecipitation with ethanol containing 40% water and drying temperature not to exce ed 60℃ . CONCLUSION: The highest yield of active priciples is obtained by c ondition above.
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Objective: To study the optimum process of Ganmao Capsules(Rhizoma Coptidis, Herba Ephedrae, etc.). Methods : The extraction of Rhizoma Coptidis and Herba Ephedrae compared with Rhizoma Coptidis according to amount of berberine. The orthogonal design was used to select the optimum extraction according to amounts of berberine and ephedrine. Results : The extraction of Rhizoma Coptidis was better than that mixed Rhizoma Coptidis and Herba Ephedrae. Taking water as solvent, Rhizoma Coptidis was macerated for 0.5h and extracted in sequence three times with 12, 10 and 10 times volume of water extraction time for 1.5h, 1.0h and 1.0h, respectively. And Herba Ephedrae was macerated for 0.5h and extracted in sequence three times with 10, 8 and 8 times volume of water extraction time for 1.5h, 1.0h and 1.0h. Conclusion : The experimental results provided the basis for the ascertainment of extraction process of Rhizoma Coptidis and Herba Ephedrae preparation.