DM 130 macro porous adsorptive resin was used to extract flavonoid glycosides from leaching solution and some factors affecting the adsorption efficiency were examined. The optimum technological conditions as follows:...DM 130 macro porous adsorptive resin was used to extract flavonoid glycosides from leaching solution and some factors affecting the adsorption efficiency were examined. The optimum technological conditions as follows:pH=5, mass ratio of liquid to solid 15 in adsorption and 70% ethanol as eluting agent. Resin could be regenerated after every three time uses. The content of flavonoids glycosides in extracts was about 24%.展开更多
The Ginkgo flavones were extracted from water leaching liquor of the Ginkgo leaves. Theleaching conditions, extractant, extraction time, temperature, pH of the extraction solution andphase separation have been investi...The Ginkgo flavones were extracted from water leaching liquor of the Ginkgo leaves. Theleaching conditions, extractant, extraction time, temperature, pH of the extraction solution andphase separation have been investigated. The optimum extraction conditions are: 60 ℃, 30 min.pH=3～4 and with ethylbutyl ketone as extractant.展开更多
Some factors which affect the two phase equilibrium were studied,such as the molecular weight of the polymer,the concentrations,the temperatures and pHs of the solution.The effect of different phase ratios on the extr...Some factors which affect the two phase equilibrium were studied,such as the molecular weight of the polymer,the concentrations,the temperatures and pHs of the solution.The effect of different phase ratios on the extraction were compared and the results were assessed.展开更多
The factors which effect the water leaching of Ginkgo flavones from Ginkgo leaves are discussed,with respect to the leaching temperatures,solvents,pHs,and the leaching times.The best conditions used for water leaching...The factors which effect the water leaching of Ginkgo flavones from Ginkgo leaves are discussed,with respect to the leaching temperatures,solvents,pHs,and the leaching times.The best conditions used for water leaching were determined.展开更多
Nanometer micro-porous Nix Zn (1-x )Fe2O4power was synthesized by hydrotherm al method.This is first time to apply template to the synthesis.The structure,characteristics and cry stal appearance are studied further by...Nanometer micro-porous Nix Zn (1-x )Fe2O4power was synthesized by hydrotherm al method.This is first time to apply template to the synthesis.The structure,characteristics and cry stal appearance are studied further by XRD,DSC,TEM,etc.It is found that nanome ter micro-porous crystal is well-crystallized,well-degree of dispers ion and smaller than 100nm in diameter.More over,tri-ethylamine can be used to b e a ideal template in this synthesis,and the first time it is reported in our co untry.The synthesis mechanism is also preliminary discussed in this pap er.展开更多
文摘DM 130 macro porous adsorptive resin was used to extract flavonoid glycosides from leaching solution and some factors affecting the adsorption efficiency were examined. The optimum technological conditions as follows:pH=5, mass ratio of liquid to solid 15 in adsorption and 70% ethanol as eluting agent. Resin could be regenerated after every three time uses. The content of flavonoids glycosides in extracts was about 24%.
文摘The Ginkgo flavones were extracted from water leaching liquor of the Ginkgo leaves. Theleaching conditions, extractant, extraction time, temperature, pH of the extraction solution andphase separation have been investigated. The optimum extraction conditions are: 60 ℃, 30 min.pH=3～4 and with ethylbutyl ketone as extractant.
文摘Some factors which affect the two phase equilibrium were studied,such as the molecular weight of the polymer,the concentrations,the temperatures and pHs of the solution.The effect of different phase ratios on the extraction were compared and the results were assessed.
文摘The factors which effect the water leaching of Ginkgo flavones from Ginkgo leaves are discussed,with respect to the leaching temperatures,solvents,pHs,and the leaching times.The best conditions used for water leaching were determined.
文摘Nanometer micro-porous Nix Zn (1-x )Fe2O4power was synthesized by hydrotherm al method.This is first time to apply template to the synthesis.The structure,characteristics and cry stal appearance are studied further by XRD,DSC,TEM,etc.It is found that nanome ter micro-porous crystal is well-crystallized,well-degree of dispers ion and smaller than 100nm in diameter.More over,tri-ethylamine can be used to b e a ideal template in this synthesis,and the first time it is reported in our co untry.The synthesis mechanism is also preliminary discussed in this pap er.
