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Purif ication of total alkaloids from Croton tiglium L.

Xiao‐Ping Lai

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Abstract

Objective To determine the technology for purif ication of total alkaloids from Croton tiglium L.by macroporous resin.Methods Acidic dye colorimetry was used to determine the total alkaloids.The adsorption and desorption performances of HPD400,AB-8,NKA-9,ADS-17 and D101 macroporous resins were compared and purification conditions optimized.Results D101 resin was selected because it was separated most effectively.The concentration of sample solution was 1.5 g · mL-1.The adsorption flow rate was 1.5 BV · h-1.Crude medicinal material to resin was 9 : 2,then 4 BV water and 4 BV 30% ethanol were used as the eluting solvent to wash the resin,collecting 30% ethanol elution.Conclusion This method is simple and feasible,which can be used to separate and purify total alkaloids from Croton tiglium L..

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Objective To determine the technology for purif ication of total alkaloids from Croton tiglium L.by macroporous resin.Methods Acidic dye colorimetry was used to determine the total alkaloids.The adsorption and desorption performances of HPD400,AB-8,NKA-9,ADS-17 and D101 macroporous resins were compared and purification conditions optimized.Results D101 resin was selected because it was separated most effectively.The concentration of sample solution was 1.5 g · mL-1.The adsorption flow rate was 1.5 BV · h-1.Crude medicinal material to resin was 9 : 2,then 4 BV water and 4 BV 30% ethanol were used as the eluting solvent to wash the resin,collecting 30% ethanol elution.Conclusion This method is simple and feasible,which can be used to separate and purify total alkaloids from Croton tiglium L..

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Available abstract

Objective To determine the technology for purif ication of total alkaloids from Croton tiglium L.by macroporous resin.Methods Acidic dye colorimetry was used to determine the total alkaloids.The adsorption and desorption performances of HPD400,AB-8,NKA-9,ADS-17 and D101 macroporous resins were compared and purification conditions optimized.Results D101 resin was selected because it was separated most effectively.The concentration of sample solution was 1.5 g · mL-1.The adsorption flow rate was 1.5 BV · h-1.Crude medicinal material to resin was 9 : 2,then 4 BV water and 4 BV 30% ethanol were used as the eluting solvent to wash the resin,collecting 30% ethanol elution.Conclusion This method is simple and feasible,which can be used to separate and purify total alkaloids from Croton tiglium L..

Key concepts: Chemistry, Chromatography, Elution, Adsorption, Solvent, Ethanol, Desorption, Colorimetry

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