2008•Lishizhen Medicine and Materia Medica ResearchRequires access

Optimization of the Extraction Process for Catalpol from the Dry Leaves of Rehmannia glutinosa Libosch by Orthogonal Experiment

Qin Li

Abstract

ObjectiveTo study the extraction process for catalpol from the leaves of Rehmannia glutinosa Libosch,the best process was selected.MethodsUsing the L8(2)7 orthogonal table.ResultsThe extraction method had a significant effect on the extractive rate.ConclusionThe best extraction process is A1 B2 C2 D2,namely,the water is used as solution,adding water,extracting 2 times,1h for each time.

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Key concepts: Catalpol, Rehmannia glutinosa, Extraction (chemistry), Traditional medicine, Water extraction, Chemistry, Chromatography, Botany