目的:优选分离冬凌草多糖的方法,探究不同分离方法对冬凌草多糖分离效果的影响。方法:分别以DEAE-Sepharose Fast Flow(Cl-型)弱极性阴离子交换层析法、乙醇分级醇析法对冬凌草粗多糖进行分离纯化,以不同分离组分中多糖含量及其免疫活...目的:优选分离冬凌草多糖的方法,探究不同分离方法对冬凌草多糖分离效果的影响。方法:分别以DEAE-Sepharose Fast Flow(Cl-型)弱极性阴离子交换层析法、乙醇分级醇析法对冬凌草粗多糖进行分离纯化,以不同分离组分中多糖含量及其免疫活性比较优选冬凌草粗多糖的分离工艺。结果:DEAE-Sepharose Fast Flow(Cl-型)弱极性阴离子交换层析法分离得到5个组分,通过乙醇分级醇沉初步得到4个冬凌草多糖组分,前者分离产品纯度较高,而后者产品在体外小鼠脾淋巴T细胞的增殖实验中表现出较强生物活性。结论:为进一步研究冬凌草多糖的生物活性,可选用乙醇分级醇沉法对冬凌草多糖进行分离纯化。展开更多
The crystal structure of [CoCl(C_7H_5N_2CH_2COPh)_4]Br has been determined by means of X-ray crystallography. The molecular structure consists of a discrete [CoCl(C_7H_5N_2CH_2COPh)_4]+ cation and one Br- anion. In th...The crystal structure of [CoCl(C_7H_5N_2CH_2COPh)_4]Br has been determined by means of X-ray crystallography. The molecular structure consists of a discrete [CoCl(C_7H_5N_2CH_2COPh)_4]+ cation and one Br- anion. In the [CoCl(C_7H_5N_2CH_2COPh)_4]+ cation, the coordination geometry of the central Co atom is square-pyramidal with four tertiary N atoms of benzimidazole from four α-(benzimidazol-1-yl)-hypnone ligands in the basal position and one chloride anion in the apical position. In the solid state, [CoCl(C_7H_5N_2CH_2COPh)_4]+ and Br- anion possess intermolecular and intramolecular interactions, which stabilize the crystal structure. The characterization of the title compound were also carried out by using elemeutal analysis, FTIR, UV spectrometries and TG-DSC.展开更多
基金The project was supported by the National Natural Science Foundation of China (50772107)National Key Basic Research Program of China (973)(2007CB210206)National High-Tech Research and Development Program of China (863) (2009AA05Z435)~~
文摘目的:优选分离冬凌草多糖的方法,探究不同分离方法对冬凌草多糖分离效果的影响。方法:分别以DEAE-Sepharose Fast Flow(Cl-型)弱极性阴离子交换层析法、乙醇分级醇析法对冬凌草粗多糖进行分离纯化,以不同分离组分中多糖含量及其免疫活性比较优选冬凌草粗多糖的分离工艺。结果:DEAE-Sepharose Fast Flow(Cl-型)弱极性阴离子交换层析法分离得到5个组分,通过乙醇分级醇沉初步得到4个冬凌草多糖组分,前者分离产品纯度较高,而后者产品在体外小鼠脾淋巴T细胞的增殖实验中表现出较强生物活性。结论:为进一步研究冬凌草多糖的生物活性,可选用乙醇分级醇沉法对冬凌草多糖进行分离纯化。
文摘The crystal structure of [CoCl(C_7H_5N_2CH_2COPh)_4]Br has been determined by means of X-ray crystallography. The molecular structure consists of a discrete [CoCl(C_7H_5N_2CH_2COPh)_4]+ cation and one Br- anion. In the [CoCl(C_7H_5N_2CH_2COPh)_4]+ cation, the coordination geometry of the central Co atom is square-pyramidal with four tertiary N atoms of benzimidazole from four α-(benzimidazol-1-yl)-hypnone ligands in the basal position and one chloride anion in the apical position. In the solid state, [CoCl(C_7H_5N_2CH_2COPh)_4]+ and Br- anion possess intermolecular and intramolecular interactions, which stabilize the crystal structure. The characterization of the title compound were also carried out by using elemeutal analysis, FTIR, UV spectrometries and TG-DSC.