ABSTRACT
OBJECTIVE：To develop a method for simultaneous determination of 5 components in classical formula Huaihua san，including rutin ，naringin，neohesperidin，quercetin and pulegone. METHODS ：HPLC wavelength switching method was adopted. The determination was performed on Cosmosil C 18 column with mobile phase consisted of acetonitrile- 0.05％ phosphoric acid solution （gradient elution ）at the flow rate of 1.0 mL/min. The detection wavelengths were set at 257 nm for rutin ，283 nm for naringin and neohesperidin ，254 nm for quercetin ，252 nm for pulegone ，respectively. The column temperature was set at 30 ℃， and sample size was 10 μL. RESULTS：The linear range was 21.7-2 170 μg/mL for rutin，46-4 600 μg/mL for naringin，22.3- 2 230 μg/mL for neohesperidin，0.96-96 μg/mL for quercetin，2.7-270 μg/mL for pulegone（all r＞0.999），respectively. RSDs of precision，stability（24 h）and reproducibility tests were all lower than 2％（n＝6）. Average recoveries were 100.70％，99.31％， 101.10％，100.03％ and 99.63％（all RSD ＜2％，n＝9）. Among 3 batches of Huaihua san samples ，the contents of above 5 components were 20.055-22.615，25.557-27.806，11.428-13.250，0.350-0.478，2.372-4.011 mg/g，respectively. CONCLUSIONS ： Established method is simple ，accurate and reproducible ，and could be used for the simultaneous determination of 5 components in Huaihua san.
ABSTRACT
OBJECTIVE：To establish a method for simultaneous determination of 12 components including naringin ， hesperidin，neohesperidin，aloe emodin ，rhein，notopterol，emodin，honokiol，isoimperatorin，magnolol，chrysophanol and physcion in classical formula Sanhua tang. METHODS ： HPLC-multi-wavelength switching technology was adopted. The determination was performed on COSMOSIL C 18 with mobile phase consisted of acetonitrile- 0.1％ phosphoric acid （gradient elution）at the flow rate of 1.0 mL/min. The detection wavelength was 280 nm（naringin，hesperidin，neohesperidin），254 nm （aloe emodin ，rhein，chrysophanol，emodin methyl ether ），310 nm（notopterol，emodin，honokiol，isoimperatorin，magnolol）. The column temperature was set at 30 ℃，and the sample size was 10 μL. RESULTS：A total of 12 components were well separated without negative interference. The linear range of naringin ，hesperidin，neohesperidin，aloe emodin ，rhein，notopterol， emodin，honokiol，isoimperatorin，magnolol，chrysophanol and physcion were 55.4-5 540，3.8-380，45.6-4 560，1.2-120， 2.1-210，2.2-220，2-200，2.4-240，0.8-80，1.2-120，1.7-170，1.1-110 μg/mL（R 2≥0.999 6），respectively. The detection limits were 0.064，0.024，0.053，0.018，0.020，0.041，0.050，0.091，0.030，0.180，0.028 and 0.083 μg/mL，respectively. The limits of quantitation were 0.213，0.075，0.174，0.060，0.063，0.138， 0.166，0.323，0.130，0.600，0.094 and 0.275 μ g/mL，respec- 9721004） tively. RSDs of precision ，stability （24 h） and repeatability 2633531778@qq.com tests were all lower than 2％（n＝6）. Average recoveries were 99.54％，99.69％，100.01％，99.93％，100.36％，99.65％， 100.03％，100.47％，99.97％，100.68％，99.90％，100.17％ （all RSDs were lower than 2％，n＝6），respectively. CONCLUSIONS ：Established HPLC-multi- wavelength switching technology is simple ，specific and stable ，which could be used for the simultaneous determination of 12 components in Sanhua tang as naringin，hesperidin，neohesperidin.
ABSTRACT
OBJECTIVE：To stud y the effects of different processed products of Whitmania pigra on hemorheology and coagulation indexes in acute blood stasis model rats. METHODS ：SD rats were randomly divided into blank group ，model group ， aspirin group ，W. pigra hang-dried product low- ，medium- and high-dose groups ，W. pigra talcum powder-ironed product low- ， medium- and high-dose groups ，W. pigra wine bran-processed product low- ，medium- and high-dose groups ，with 6 rats in each group. Except for blank group ，other groups received subcutaneous injection of epinephrine hydrochloride and ice water bath for 15 d to induce acute blood stasis model. From the 8th day of modeling ，rats in aspirin group were given aspirin 0.2 g/kg intragastrically. Rats in each dose group of W. pigra processed products were given relevant medicine 0.35，1.4，3.5 g/kg intragastrically（calculated by crude drug ）. Rats in blank group and model group were given constant volume of normal saline intragastrically， once a day ， for consecutive 8 days. Hemorheology indexes as whole blood viscosity （high， medium and low shearrate ），plasma viscosity ，erythrocyte com deformation index ，erythrocyte aggregation index ，hematocrit， and blood coagulation indexes as prothrombin time （PT）， mail：wcl19960125@163.com activated partial prothrombin time （APTT），thrombin time （TT）were determined. RESU LTS：Compared with blank group ，whole blood viscosity under different shear rates ，plasma viscosity ， erythrocyte aggregation index and hematocrit of model group were increased significantly ，while erythrocyte deformation index was significantly decreased ，PT，TT and APTT were significantly shortened （P＜0.01）. Compared with model group ，whole blood viscosity under different shear rates ，plasma viscosity ，erythrocyte aggregation index and hematocrit of aspirin group and W. pigra hang-dried product ，talcum powder-ironed product ，wine bran-processed product high-dose groups were decreased significantly ， while erythrocyte deformation index were significantly increased ，and PT （only W. pigra talcum powder-ironed products high-dose group），APTT（except for W. pigra hang-dried products high-dose group ）and TT were prolonged significantly. The whole blood viscosity of W. pigra hang-dried product medium-dose group under low shear rate ，and those of W. pigra talcum powder-ironed product low-dose ，wine bran-processed product medium-dose groups under low and medium shear rates were decreased significantly. Erythrocyte deformation index of W. pigra talcum powder-ironed product medium-dose group was increased significantly ，while erythrocyte aggregation index was decreased significantly ，and PT ，TT were prolonged significantly. APTT of W. pigra hang-dried product medium-dose group was prolonged significantly. Hematocrit of W. pigra wine bran-processed product low-dose group was decreased significantly （P＜0.05 or P＜0.01）. CONCLUSIONS ： W. pigra hang-dried， talcum powder-ironed and wine bran-processed product can effectively improve hemorheology indexes and prolong blood coagulation time.