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Simultaneous determination of rutin and naringellin-7-O-glucoside in extraction of Lysimachia clethroide Duby by HPLC

Haimin PAN ; Bengang YOU ; Lihua TANG ; Xinzhang LI ; Shilin YANG

Chinese Traditional Patent Medicine.2010;(1):106-109.

AIM : To establish a HPLC method for simultaneous determination of rutin and naringenin-7-o-glucoside in Lysimachia clethroide Duby.METHODS: Using Diamonsil C_(18) (4.6 mm×250 mm,5 μm) as analytical column.The mobile phase consisted of acetonitrile (A) and 0.1% phosphoric acid ( B ) with gradient elution : 0～18rain,83%～80% B; 18～30 min,80%～86% B.The detection wavelength of rutin and naringenin-7-o-glucoside was at 254 nm and 281 nm,respectively.The flow rate was 1.0 mL/min; Column temperature was at 35 ℃.RESULTS: A better separating effect was obtained with the HPLC gradient elution method.The linear calibration curve of rutin and naringenin-7-o-glucoside were obtained in the concentration range of 1.00～48.00 μg/mL( r =0.999 3 ) and 0.64 ～ 40.72 μg/mL( r = 0.999 8 ),respectively.CONCLUSION : The HPLC method is accurate,simple and can be used to determine the contents of rutin and naringenin-7-o-glucoside in Lysimachia clethroide Duby simultaneously.

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Solid phase extraction-gas chromatography with dual tower and dual column for the simultaneous determination of 53 organophosphorus pesticides in traditional Chinese herbal medicines

Jiwei LU ; Shui MAO ; Xiuhong MAO ; Zhengwei JIA ; Ke WANG ; Shen JI

Chinese Traditional Patent Medicine.2010;(1):94-99.

AIM: The multi-residues method was used to determine organophosphorus pesticides in traditional Chinese herbal medicines (TCHMs).METHODS: Fifty three pesticides were extracted by high-speed homogenization,and then cleaned sequentially by C_(18) and Carb/NH2 solid phase extraction (SPE) cartridges.The residues were simultaneously identified and quantified by GC-FPD equipped with dual tower,dual column and two FPD detectors.RESULTS: The analytical performance was demonstrated by the analysis of 6 TCHMs samples extracts,spiked at three concentration levels for each pesticide.In general,the recoveries ranging from 70% to 120%,with relative standard deviations (RSDs) less than 15%,were obtained.The limit of detection (LOD) for most of the targeted pesticides tested was below 0.01 mg/kg.CONCLUSION: The method has good extraction efficiency,purification effect and good reproducibility,which can be applied to the determination of organophosphorus pesticide residues in the routine analysis of TCHMs.

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Simultaneous determination of two compounds in Mosla chinensis by RP-HPLC

Haowu HU ; Xiaoming XIE ; Rengeng SHU ; Yuesheng WANG

Chinese Traditional Patent Medicine.2010;(1):88-91.

AIM:To establish a method for simultaneously determining luteolin and negletein in Mosla chinensis Maxium collected in picking times.METHODS: The Angilent Zorbax,Extend C-18 column(4.6 mm×250 mm,5μm) was used with methanol-water (containing 0.4% phosphonic acid)(50: 50) as mobile phase.The flow rate was 1.0 mL/min.The detection wavelength was set at 350 nm.RESULTS : The method had the good linear relationship within the range of 0.04-0.61 μg for luteolin and within the range of 0.20-3.01 μg for negletein,respectively,with the correlation coefficient of 0.999 9.The average recoveries of the two flavones were 97.32%,98.60%,respectively.The contents of luteolin and negletein in Mosla chinensis Maxium.varied in different picking times,which reached the its maximum at florescence (264.8 μg/g,2 746.3 μg/g) in August,respectively.CONCLUSION: The method is fast,rapid,convenient,accurate and can be used for quality control of Mosla chinensis Maxium.

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Determination of alkaloid from combination of Rhizoma Coptidis and Fructus Evodiae by TLCS

Fajing LIU ; Dongmei SUN ; Jiahui LU ; Aili XU

Chinese Traditional Patent Medicine.2010;(1):75-79.

AIM: To investigate the changes of alkaloid in Rhizorrm Coptidis and Fructus Evodiae before and after combination. METHODS: The content of berberine hydrochloride,palmatine hydrochloride,jatrorrhizine hydrochloride in Rhizoma Coptidis and Fructus Evodiae before and after combination were determined by TLCS.RESULTS : After combination of Rhizoma Coptidis and Fructus Evodiae,contents of berberine hydrochioride,palmatine hydrochloride,jatrorrhizine hydrochloride significantly reduced,among which the reduction of berberine hydrochloride was more obvious.CONCLUSION: In decoction,Fructus Evodiae appears to restrict the alkaloid from Rhizoma Coptidis in order to lower the side effect of Rhizoma Coptidis.

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Dtermination of four iridoid glycosides in different Duyiwei preparations by HPLC

Yunling GAO ; Zheng PAN ; Tao ZHANG ; Jie DENG

Chinese Traditional Patent Medicine.2010;(1):71-74.

AIM : To set up a method of determinting the contents of four iridoid glycosides in different preparations of Lamiophlomis rotata ( Benth.) kudo.METHODS : The quantitative analysis was carded out on a column of Waters Symmetry by HPLC using a mobile phase of CH_3OH-H_2O under a flow rate of 1.0 mL/min.235 nm was selected as the detective wavelength.RESULTS: The linear ranges were 0.236-1.18 μg for sesamoside,0.440-2.20 μg for shanzhiside methyl ester,0.094-0.470 μg for 7,8-dehydropenste moside、0.750-3.75 μg for 8-O-ace-tylshanzhiside methyl ester.The recoveries of them were all between 96% and 104% ( RSD ＜ 5% ).CONCLUSION: The method is accurate,stable,reliable,and can be used as a quantitative standard for determining the contents of iridoid glycosides in different Duyiwei preparations.

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Simultaneous determination of five components in Shuanghuanglian Powder for Injection by HPLC

Yonghui SUN ; Wenchun LI

Chinese Traditional Patent Medicine.2010;(1):65-68.

AIM: To establish a HPLC method for simultaneously determining chlorogenic acid,caffeic acid,forsythin,forsythoside A and baicalin in Shuanghuanglian Powder for Injection (Flos Lonicerae japonicae,Fructus Forsythiae,Radix Scutellariae,etc.).METHODS: HPLC assay was carried out on a Phenomenex~((R)) Luna C_(18) column (250 mm×4.6 mm,5 μm).The mobile phase was methanol-0.2% phosphoric acid solution as gradient elution.The flow rate was 1.0 mL/min.The detection wavelength was set as multi-wavelength detection.RESULTS: The linear ranges of chlorogenic acid,caffeic acid,forsythin,forsythoside A and baicalin fell within the range of 0.204-2.04 μg ,0.010 2-0.102 μg,0.186-1.86 μg,0.058 5-0.585 μg and 2.52-25.2 μg,respectively.The five components showed good linear correlations ( r = 0.999 7,0.999 4,0.999 8,0.999 8,0.999 9 ).The average recoveries of five components were in accordance with the determination requirements.CONCLUSION: The method is simple,quick,reliable,accurate and very suitable to the quality control of Shuanghuanglian Powder for Injection.

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Optimium extraction of polysaccharides from folium Artemisia argyi by response surface methodology

Xia SHEN ; Yanhong ZHANG ; Huihui YUAN ; Minbo LAN

Chinese Traditional Patent Medicine.2010;(1):48-51.

AIM: To optimize the extraction of folium Artemisia argyi polysaccharides by the use of response surface methodoloy.METHODS : Experiment factors and levels were first selected on the ground of one factor test.Along with the central composite experimental design principles,the response surface methodoloy with three factors and three levels was adopted in search of multiple quadratic linear regression.Response surface and contour were finally chosen as the extraction rate and the response value respectively.RESULTS: The optimum extraction conditions of the polysaccharides from folium Artemisia argyi were concluded as follows : extraction temperature was at 99 ℃,extraction time was 2.3 hours,ratio of 20.CONCLUSION : Under these conditions,the yield of folium Artemisia argyi polysaecarides is up to 3.017%,extraction rate of the predictive best polysaccharides is 3.096%,and the relative error is 2.6%.

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An investigation on the in vitro release behavior of TCM components in different pressure sensitive adhesives

Mingming CHANG ; Yuming SUN ; Qing WANG ; Yong QIAN ; Xin ZHANG ; Tianfu WANG

Chinese Traditional Patent Medicine.2010;(1):43-47.

AIM: To examine the effect of acrylic ester and thermosol respectively as pressure sensitive adhesive matrix of zhitong huoxue extract ( Rhizoma Corydalis,Radix aconiti,Radix Paeoniae alba,Radix et notoginseng ginseng,etc) on the dissolution of effective constituent from zhitong huoxue extract.METHODS: The in vitro release experiment was carried out on Permcell diffusion cell,HPLC method was applied to determining the cumulative elease rate of tetrahydropalmatine,aconitine,paeoniflorin and ginsenoside Rg_1 from zhitong huoxue pressure sensitive adhensive.RESULTS: The acrylic ester matrix had sound controlled release profile in vitro of alkaloid components.In KT-A thermosol matrix,the in vitro release rate proved to be inversely proportional to the molecular weight (R = 0.91 ) of the effective constituents,while the 2501 s matrix presented a steadily cumulative release rate over 12 h (30% -43% ).CONCLUSION: Good release rates are observed with effective constituent with small molecular weight,adhesive composition of matrix has an obvious effect on the in vitro release behavior of zhitong huoxue extract.

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Drug release of Compound Salvia Multi-component released Double-layer Tablet

Changchun PENG ; Qin ZHENG ; Pengyi HU ; Junjie PAN ; Chunhua LAI ; Ming YANG

Chinese Traditional Patent Medicine.2010;(1):39-43.

AIM: To establish the drug release method of Compound Salvia Multi-component released Doublelayer Tablet and investigate its in vitro drug release behavior and the influencing factors of the drug release rate.METHODS: The method of evaluating in vitro release rate of double-layer tablet was established with salvianolic acid B and gindenoside Rg_1 as index,The influencing factors of the release of rapid release layer and sustained release layer of double-layer tablet and their in vitro drug release behavior were studied.RESULTS: The rapid release layer showed the quick releasing effect; The drug release curve of sustained release layer accorded with Ritger-Peppas equation; artificial gastric juice had significant effect on the release curve of gindenoside Rg_1 which in double-layer tablets,but had no significant effect on the release curve of salvianolic acid B.CONCLUSION: The evaluation of in vitro release rate of Compound Salvia Multi-component released Double-layer Tablet shows good properties of fast and sustained release and clinic application is achieved.

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Effect of Xilei Powder on primary cultured fibroblast functions related to wound healing

Jianping DAI ; Jun CHEN ; Yufei BEI ; Bangxing HAN ; Xiaokun ZHOU

Chinese Traditional Patent Medicine.2010;(1):30-35.

AIM:Xilei Powder,a traditional Chinese prescription,has been used to treat wounds for hundreds of years,but the mechanism has not been fully understood.METHODS:The effects of Xilei Powder on fibroblast proliferation,collagen accumulation,matrix metalloproteinases-2,9 ( MMP-2,9 ) activities and tissue inhibitor of metalloproteinase 1 (TIMP-1) production were investigated by MTT,chloramine T method,gelatin zymography and enzyme-linked immunosorbent assays ( ELISA),respectively.RESULTS: The aqueous extract of Xilei Powder significantly promoted fibroblasts proliferation in a time and concentration manner,the population doubling time (125 μg/mL) was 33.8 h,it also significantly (P ＜0.05 ) promoted collagen production.Both of the aqueous and alcoholic extracts could significantly ( P ＜ 0.05 ) increase MMPo2 activity,and also very significantly ( P ＜ 0.01 )promote TIMP-1 production.CONCLUSION: Xilei Powder could promote fibroblasts proliferation,collagen and TIMP-1 production,this might be parts of mechanism to promote wound healing.

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