A large amount of data generated in the study of chromatographic fingerprint of Chinese herbal medicines. Criteria selection was one of main considerations while the fingerprint analysis was conducted. Based on the published reports, several criteria of chromatographic fingerprint analysis were reviewed in this paper, including the basic parameters, criteria of peaks isolated, reproducibility of chromatogram and related criteria,criteria of optimization, criteria of stability as well as multi-phase multi-information fingerprint chromatograms, etc..

This study systematically reviewed and analyzed Gentianae Szechenyii Flos((),Pangyen karpo) based on herbalism and phytotaxonomy in both ancient and modern literature.After the textual research,it was found that Pangyen of Dunhuang Tibetan medical literature was in conformity with Gentianae Szechenyii Flos recorded in Moon King and Four Tantras,for the treatment of hoarseness and some lung diseases (e.g.cough).Gentiana szechenyii Kanitz and G.algida Pall.(including var.algida and var.purdomii T.N.Ho) are the two original plants of Gentianae Szechenyii Flos,and the former has been recognized as the mainstream variety so far.This paper simultaneously pointed out some misunderstanding and confusion or contextual error in the standard for Tibetan medicine and treatises on it combining with field work and market investigation,to confirm that Pangyen was in line with Gentianae Szechenyii Flos.This study provided a reference of original plant for the safe medication and the modernization of the Tibetan medicine preparation.

To investigate the chemical constituents of the roots of Andrographis paniculata, 28 compounds were isolated and identified from the 80% ethanol extract. There are 20 flavonoids: 5, 5'-dihydroxy-7, 8, 2'-trimetroxyflavone (1), 5-hydroxy-7, 8, 2', 6'-tetramethoxyflavone (2), 5, 3'-dihydroxy-7, 8, 4'-trimethoxyflavone (3), 2'-hydroxy-5, 7, 8-trimethoxyflavone (4), 5-hydroxy-7, 8, 2', 3', 4'-pentamethoxyflavone (6), wightin (7), 5, 2', 6'-trihydroxy-7-methoxyflavone 2'-O-beta-D-glucopyranoside (8), 5, 7, 8, 2'-tetramethoxyflavone (10), 5-hydroxy-7, 8-dimethoxyflavanone (11), 5-hydroxy-7, 8-dimethoxyflavone (12), 5, 2'-dihydroxy-7, 8-dimethoxyflavone (13), 5-hydroxy-7, 8, 2', 5'-tetramethoxyflavone (14), 5-hydroxy-7, 8, 2', 3'-tetramethoxyflavone (15), 5-hydroxy-7, 8, 2'-trimethoxyflavone (16), 5, 4'-dihydroxy-7, 8, 2', 3'-tetramethoxyflavone (17), dihydroneobaicalein (18), andrographidine A (19), andrographidine B (20), andrographidine C (21) and 5, 2'-dihydroxy-7, 8-dimethoxyflavone 2'-O-beta-D-glucopyranoside (22); three diterpenoids: andrograpanin (23), neoandrographolide (24) and andrographolide (25); two phenylpropanoids: trans-cinnamic acid (26) and 4-hydroxy-2-methoxycinnamaldehyde (5); and oleanolic acid (9), beta-sitosterol (27) and beta-daucosterol (28). Compound 1 is a new flavone, compound 4 is a new natural product, compounds 2, 3 and 5 were isolated from the Androggraphis genus for the first time and compounds 6-9 were isolated from this plant for the first time.

In the present study, the regulation of Vitreoscilla hemoglobin (VHb) on astragaloside IV biosynthesis was investigated. An intermediate expression vector consisting of the CaMV35S promoter fused to the vgb and nopaline synthase terminator was transferred into Astragalus membranaceus via Agrobacterium rhizogenes. The transgenic hairy roots were confirmed by PCR amplification and Southern blot hybridization. The expression of vgb in transgenic hairy roots was confirmed by RT-PCR. After 15 days cultivation, the dry weight and growth rate of transgenic hairy roots were higher than that of the non-transgenic hairy root. ELSD-HPLC analysis showed that astragaloside IV content of transgenic hairy roots was 5 to 6 times of non-transgenic hairy root control and 10 to 12 times of Radix Astragali from Shanxi Province. These results suggested that the expression of vgb promoted the growth of transgenic hairy roots, and increased the content of astragaloside IV.

ObjectTo investigate the chemical constituents in the rhizoma of Belamcanda chinensis (L.) DC. MethodsThe chemical constituents were isolated and purified by solvent extraction together with various chromatographic techniques. The structures were elucidated on the basis of chemical evidence and spectral data. ResultsThree compounds were isolated from the EtoAC extracts of the rhizome of B. chinensis which were isorhamnetin (Ⅹ), hispidulin (Ⅺ), dichotomitin ( ⅩⅡ); four compounds were isolated from n-BuOH extracts, which were iridin ( ⅩⅢ), tectoridin (ⅩⅣ), daucosterol ( ⅩⅤ), vittadinoside or stigmasterol-3-O-glucoside ( ⅩⅥ). ConclusionCompound Ⅺ is isolated from this medicinal plant for the first time.

Objective To observe the histological structure of plant roots of Dendrobium Sw. for assisting identification of crude drug Herba Dendrobii. Methods Morphological and histological studies were carried out on 11 medicinal plant roots in Dendrobium Sw. by microstructural observation. The 11 species were divided into three groups according to their stem morphology: a) pair fleshy-stem group, including D. chrysanthum, D. crepidatum, D. primulinum, D. hercoglossum, and D. crystallium; b) thick-and rigid-stem group, including D. fimbriatum and D. aurantiacum var. denneanum; c) node-or inter- node- bulgy-stem group, including D. findlayanum, D. gratiosissimum, D. pendulum, and D. wardianum. The surface descriptions of velamen were conducted for D. fimbriatum and D. aurantiacum var. denneanum which are similar in characters of cross section. Results There were differences in shape and layers of velamen cell, number of xylem bundles, maximum diameter of vessels, organization of pith, as well as the types, quantity, and size of crystals. D. fimbriatum could be distingushed from its adulterant species D. aurantiacum var. denneanum by the different surface structure of velamen cells. Conclusion The histological characters of the roots can be used for assisting identification of Herba Dendrobii.

To investigate the chemical constituents of Psidium Guajava L, the EtOH/H2O extract of the fresh leaves was subjected to various chromatography. Five constituents with galloyl moiety were isolated and elucidated as 1-O-(1, 2-propanediol)-6-O-galloyl-beta-D-glucopyranoside (1), gallic acid (2), ellagic acid (3), ellagic acid-4-O-beta-D-glucopyranoside (4) and quercetin-3-O-(6"-galloyl) beta-D-galactopyranoside (5) by spectroscopic methods, including 2D NMR and HR-ESI-MS spectrometry as well as by comparison with published data. Compounds 4 and 5 were obtained from P. guajava for the first time, and compound 1 is a new polyhydroxyl compound.

AIM　The aim is to investigate the chemical constituents of Belamcanda chinensis. METHODS　The chemical constituents were isolated and purified by solvent extraction together with various chromatographic techniques. The stuctures was elucidated on the basis of chemical evidence and spectral data. RESULTS　Eight compounds were isolated from the ethanol extract of the rhizome of Belamcanda chinensis (L.)DC..Among them,six isoflavones were elucidated as irilone(Ⅰ)、genistein(Ⅱ)、tectorigenin(Ⅲ)、 irigenin(Ⅳ)、dimethyltectorigenin(Ⅴ)、irisflorentin(Ⅵ). CONCULSION　 ⅠandⅡ were isolated from this medicinal plant for the first time.

Aim To study the chemical constituents of the underground part of Ligularia pleurocaulis (Franch.) Hand-Mazz.. Methods The dried roots and rhizomes of L.pleurocaulis were extracted with methanol. Isolation and purification were performed by silica gel column chromatography and recrystallization etc. Structures of the pure compounds were established on basis of spectral analysis. Results Twelve compounds were obtained from L.pleurocaulis, they were 6-angeloyloxy-furanoligu-larenone (1), 2-oxo-3-hydroxy-eremophila-1(10),3,7(11),8-tetraen-8,12-olide (2), tiglic acid (3), oleanolic acid (4), lupeol (5), β-sitosterol (6), daucosterol (7), caffeic acid (8), emodin (9), 7-methoxy-coumarin (10), ferulic acid (11) and 4-hydroxy-2,5-dimethoxy-benzaldehyde (12). Conclusion Compound 1 is a new eremophilane and compound 2 is a new natural compound. All above compounds were obtained for the first time from L.pleurocaulis.