[Chemical constituents of Angelica nitida roots].

Objective: To investigate the chemical constituents in the roots of Angelica nitida.

Methods: The chemical constituents were isolated by silica gel,their structures were identified by spectral analysis.

Results: Nine compounds were isolated and identified as isoimperatorin(I), imperatorin(II), cnidilin(III), beta-sitosterol(IV), isopimpinellin(V), phellopterin(VI), neobyakangelicol(VII), (3S)-2,2-dimethyl-3,5-dihydroxy-8-hydroxylmethyl-3,4-dihydro-2H,6H-benzo[1,2-b: 5,4-b'] dipyran-6-one(VIll) and byakangelicin (IX).

Protective Effect of Anthocyanins Extract from Blueberry on TNBS-Induced IBD Model of Mice.

This study was carried out to evaluate the protective effect of anthocyanins extract of blueberry on trinitrobenzene sulfonic acid (TNBS)-induced inflammatory bowel disease (IBD) model of mice. The study employed female C57BL/6 mice (n = 50), and colitis was induced by intracolonic injection of 0.5 mg of TNBS dissolved in 50% ethanol-phosphate buffered solution.

[Comparative analysis on the configuration of vegetative organs of medicinal Chrysanthemum from different original locations and species].

Objective: Compared the difference of the configuration of vegetative organs of medicinal Chrysanthemum in the same habitats but from various original locations and species, in order to provide scientific basis for the study of introduction, differentiation within the species, breeding and genetic diversity.

Methods: The experimental plot were divided into some groups randomly in design and the configuration of vegetative organs were observed, measureed and analysed.

Results: The differences of the type and shape of the leaves were obvious.

[Studies on the chemical constituents in roots of Angelica tianmuensis and A. megaphylla].

Objective: To study the chemical constituents in roots of Angelica tianmuensis and A. megaphylla.

Methods: Compounds were isolated by column chromatography with silica gel, their structures were identified by spectral analysis.

[Selection of the microorganism for dioscin hydrolyze].

Objective: To select the microorganism which can hydrolyze dioscin to diosgenin.

Methods: The microorganism were selected from the surface of rhizome, rhizosphere soil, the inside of the leaves and rhizome of Dioscorea zingiberensis C. H.

[Research of polysaccharide from Dioscorea opposita Thunb].

Objective: To isolate a homogeneous polysaccharide RP from RDP (a crude polysaccharide from Dioscorea opposita Thunb.) , and study its preliminary composition and structure.

Methods: RP was obtained with water extraction, alcohol sedimentation, CTAB deprotein, cellulose column and SephadexG-100 column.

[Studies on the chemical constituents from the aerial parts of Breynia fruticosa].

Objective: To investigate the chemical constituents from the aerial parts of Breynia fruticosa.

Method: Various chromatographic techniques were employed for isolation and purification of the constituents. The structures were elucidated by chemical evidence and spectral methods.