Quantification of catalpol in root of Rehmannia glutinosa varieties 19 collected in Phu Tho province by high-performance liquid chromatography

Abstract

The active ingredient catalpol in the Rehmannia glutinosa variety 19 roots is an important chemical component. Catalpol has hypoglycemia, diuretic, and laxative effects; it is used to support the treatment of diabetes, ischemic cerebral, and dementia, and it is regulated by Vietnamese Pharmacopoeia V (2017) as a marker to check the quality of medicinal herbs. This study aimed to develop a procedure for quantifying catalpol in the root of Rehmannia glutinosa varieties 19 by highperformance liquid chromatography (HPLC) to evaluate the quality of medicinal herbs...