Objective To establish a new method for the identification of Cortex Phellodendri. Methods A HPLC fingerprint at 220 nm has been established for identification of Cortex Phellodendri, using a Merck-Lichrospher RP-C_(18) column(4.6?250mm, 5?m) and ACN(A) with the buffer of 0.3% H_3PO_4-NH(CH_2CH_3)_2 (B) in gradient as the mobile phase. The results were compared with the chromatograms of three species of Rbizoma Coptidis under the same conditions. Results HPLC fingerprint of Cortex Phellodendri at 220nm consists of 14 specific peaks. The steady appearance of the peaks and their relative contents were considered as important signs for the identification of this crude drug. The chromatograms of Rhizoma Coptidis were obviously different from the fingerprint of Cortex Phellodendri. Conclusion This method has been proven to be feasible for the identification of Cortex Phellodendri.

Objective To establish a method for determination of Berberine and Phellodendrine in Cortex Phellodendri(CP).Methods Reverse-phase HPLC method was used for determination of Berberine and Phellodendrine in different batches of CP.The chromatographic conditions were:Merck-lichrospher RP-C18 column(4.6?250 mm,5 ?m),flow rate being 0.8 mL/min,column temperature at 25 ℃,detection wavelength at 284nm for Phellodendrine and 245nm for Berberine.Results The content of Berberine was 4 times and that of Phellodendrine in Chuan CP 2～3 times as much as that of Guan CP.Conclusion The method is proved to be feasible for quality assessment of Cortex Phellodendri.Limited contents of Berberine and Phellodendrine should be laid out for the great difference in Chuan CP and Guan CP.

A new triterpenoid saponin and fourteen known triterpenoids were isolated from the methanol extract of the stems and leaves of Callicarpa integerrima Champ, which is used in Chinese folk medicine for stopping bleeding, expelling the wind, dissipating stagnation, and treating scrofula, by using various chromatographies, such as silica gel, Sephadex LH-20 and RP-C18 column chromatography. Their structures were identified as a new compound 2alpha, 3beta, 19alpha, 23-tetrahydroxy-olean-12-en-28-oic acid-28-O-beta-D-glucopyranosyl-(1 --> 4)-beta-D-glucopyranoside (1), together with fourteen known compounds: oleanolic acid (2), 3-acetyl oleanolic acid (3), 3beta-O-acetyl ursolic acid (4), 2alpha-hydroxy-ursolic acid (5), 2alpha, 3beta, 19alpha, 23-tetrahydroxy-urs-12-en-28-oic acid (6), alpha-amyrin-3-O-beta-D-glucopyranoside (7), pomolic acid (8), betulinic acid (9), ursolic acid (10), 2alpha, 3beta, 19alpha, 23-tetrahydroxy-olean-12-en-28-oic acid (arjungenin) (11), 2alpha-hydroxy-oleanolic acid (12), hederagenin (13), 2alpha, 19alpha-dihydroxy-ursolic acid (14) and pruvuloside A (15), by the spectroscopic techniques of NMR, HMBC, IR and MS, separately. All these compounds were obtained from this plant for the first time, and compounds 3, 4 and 15 were isolated from genus Callicarpa L. for the first time.

The study is to develop an HPLC method for simultaneous determination of rhamnazin (1), rhamnocitrin (2), rhamnetin (3), rhamnazin-3-O-beta-D-glucopyranoside (4), rhamnazin-3-O-beta-D-xylopyranosyl-(1-->4)-beta-D-glucopyranoside (5), rhamnazin-3-O-beta-D-glucopyranosyl-(1-->4)-beta-D-glucopyranoside (6), and rhamnocitrin-3-O-beta-D-glucopyranosyl-(1-->4)-beta-D-glucopyranoside (7) in Nervilia fordii. The separation was performed on a Kromasil C18 column (250 mm x 4.6 mm, 5 microm) with 0.4% phosphoric acid-acetonitrile as the mobile phase in a gradient elution at a flow rate of 1.0 mL x min(-1). The detect wavelength was set at 256 nm, and the column temperature was set at 40 degrees C. There were good linear relationships between the logarithm values of concentrations and those of the peak areas of seven flavonoids (1-7) in the range of 0.55-70.00 microg x mL(-1) (r = 0.9997), 0.86-110.00 microg x mL(-1) (r = 0.9997), 0.39-50.00 microg x mL(-1) (r = 0.999 7), 0.55-70.00 microg x mL(-1) (r = 0.999 5), 1.33-170.00 microg x mL(-1) (r = 0.9998), 1.33-170.00 microg x mL(-1) (r = 0.9998), 0.16-20.00 microg x mL(-1) (r = 0.9995), respectively. The recoveries of the seven flavonoids were between 97.19%-99.45%, the relative standard deviations (RSDs) were between 0.91%-2.69%. The established method is rapid, accurate with high repeatability, which could provide scientific evidence for the quality control of Nervilia fordii.

Objective To supply evidence for quality control of Herba Ephedra by determining content limit in different batches of medicinal material of Herba Ephedra.Methods A RP-HPLC method was used for the determination of ephedrine and pseudo-ephedrine. The chromatographic conditions were: Kromasil RP-C18(250?4.6 mm,5 ?m) column, a mixture of 0.3 %phosphoric acid-methanol (10∶90) as mobile phase and 213nm as detected wavelengths.Results The contents of the above two alkaloids showed great difference among the 14 patches of tested samples. The content of ephedrine ranged 0.361 %～1.538 %and that of pseudo-ephedrine 0.332～2.087 %. The suggested content limitation of ephedrine should be 1.082 %, and that of psedoephedrine be 1.008 %in the crude Herba Ephedra.Conclusion The established method has been proven to be simple, stable and repeatable, and can be applied for quality control of the crude crude Herba Ephedra and compound prescriptions containing crude Herba Ephedra.

Objective To establish a HPLC method for the assay of psoralen and isopsoralen in different effective extracts of Fructus Psoraleae. Methods HPLC was carried out on the column of Kromasil RP-C18. The mobile phase was methanol -water(65 ∶35). The flow rate was 1.0 mL/min and the UV detection wavelength was 245 nm. Results Good linearity of psoralen was showed within the range of 10.5 ng～525 ng(r= 0.999 3)and isopsoralen within the range of 9 ng～450 ng (r= 0. 999 9). The content of psoralen and isopsoralen differed in different extractions of Fructus Psoraleae. Among them,the extract C (extracted by ethyl acetate ) contained the highest contents of psoralen and isopsoralen,while the contents of psoralen and isopsoralen were very low in the extract D (extracted by n-butyl alcohol) and E (supernatant of water extract). Conclusion The method is simple,accurate and reproducible. The anti-asthma effect and the dose-effect relationship of the different effective extracts of Fructus Psoralea need further pharmacodynamics study.

AIM: To study the enrichment-purification process of total triterpeniods from Rabdosia lophanthoides var.gerardianus with macro porous resin. METHODS: The purify of the total triterpeniods was used as marker to optimize the adsorptive capacity and elution characteristics. RESULTS: The result showed that 20 mL of the extraction solution(0.5 g/mL) was purified with a column of macro porous resin(d15 mm?h120 mm,V=20 mL,dried weight 10 g) and washed with distilled water,then eluted with 80 mL 60% ethanol and 160 mL 90% ethanol in proper order.With macro reticular resin to adsorb and purify,the elution ratio of total triterpeniods of 90% ethanol fraction was 93.2% and the purity reached above 20%. CONCLUSION: This process of applying macro reticular resin to adsorbing and purifying total triterpeniods from Herba Rabdosia lophanthoides var.gerardianus was successful.

Objective To establish a method for the determination of chimoni and forsythiaside in Kangbingdu Oral Liquid(KOL) and to develop a new quality standard for KOL. Methods A RP-HPLC method was adopted for the determination of chimonin and forsythiaside of KOL. The chromatographic conditions were as follows:Kromasil RP-C18(250 mm? 4.6 mm,5 ? m) column was used,a mixture of acetonitrile -0.1 % acetic acid(15 ∶ 85,v/v) served as mobile phase,the flow rate was 0.80 mL? min-1,and detective wavelengths of time process were 0→ 25 min:258 nm,and 25→ 30 min:277 nm. Theoretical plate number of chimoni was over 6000 and that of forsythiaside was over 5000. Results The chimonin showed a good linearity in the range of 48.8ng～ 1525 ng(r=0.999 4),and the linear range of forsythiaside was in the ranged of 56ng～ 1750 ng(r=0.999 5).The mean recovery of chimonin and forsythiaside was 97.65 % and 99.21 % respectively. The content of chimonin in the 10 batches of samples was in the range of 14.40～ 20.41 ? g? mL-1,and that of forsythiaside was in the range of 28.70～ 36.01 ? g? mL-1. Conclusion The developed method has been proven to be simple,stable and reproducible,and can be applied for quality control of the Kangbingdu Oral Liquid.

Objective To study the protective effects of aqueous extract and alcohol-soluble extract of Isodon lophanthoides var.gerardianus (Benth.)Hara (ILVG) on immunity hepatic injury induced by concanavalin A (Con A) in mice.Methods One hundred and eight NIH mice were allocated into normal control group,model group,ILVG groups of aqueous extract and alcohol-soluble extract (low-,middle-and high-dosage),and bifendate group randomly.In the experimental groups,mice received either ILVG aqueous extract or alcohol-soluble extract (18.20 g?kg-1,9.10 g?kg-1,4.55 g?kg-1 respectively) or Bifendate (45 mg?kg-1) by gastric perfusion daily for consecutive 5 days.In the 5th day,Con A (20 mg?kg-1) was injected into mice via the tail vein 4h after administration.And then the blood was obtained by picking out the eyeball and the serum was separated after 8-hour fasting.The serum levels of ALT and AST were analyzed,the body weight as well as the weight of liver,spleen and thymus were measured,and pathological features of hepatic tissue were observed.Results ILVG can decrease the ALT and AST,restrain the enlargement of liver and the shrinkage of thymus and reduce the necrosis of hepatic tissue.Conclusion Aqueous extract and alcohol-soluble extract of ILVG possess the effects of protecting liver from immunity injury induced by Con A in NIH mice.

Objective To compare the quality of prepared slices of Herba Ephedrae from different producing areas and to establish reference quality criterion of Herba Ephedrae.Methods Determined the content of Ephedrine and Pseudoephedrine in Herba Ephedra Prepared Herbal by HPLC.According to Chinese Pharmacopeia of 2000-year edition,extract,ash,water,impurity and foreign substance were detected; accelerated stability test was performed according to experience.Results The content of Ephedrine in Herba Ephedra is 0.995 %～1.589 %,honey-fried HerbaEphedra is 0.855 %～1.557 %;the content of Pseudoephedrine in Herba Ephedra is 0.560 %～2.087 %,honey-fried Herba Ephedra is 0.508 %～1.902 %; water-soluble extract was 8.83 %～18.30 %and 14.81%～27.45 %, alcohol-soluble extract was 7.74 %～18.83 %and 14.15 %～27.34 %, the total ash content was 6.49 %～10.29 %and 6.34 %～10.24 %and acid-insoluble ash was 0.19 %～0.42 %and 0.18 %～0.42 %in Herba Ephedrae and honey-prepared Herba Ephedrae respectively.The average water content was 8.10 %(s=0.3961)and 4.02 %(s=0.4674)and average content of impurity and foreign substance was 2.02 %(s=0.1954)and 2.01 %(s=0.2209)in Herba Ephedrae and honey-prepared Herba Ephedrae respectively.Conclusion This research will provide a reference criterion for the quality control of prepared slices of Herba Ephedrae.