Simultaneous separation of three isomeric sennosides from senna leaf (Cassia acutifolia) using counter‐current chromatography. Issue 20 (9th September 2015)

• Record Type: Journal Article
• Authors: Park, Sait Byul; Kim, Yeong Shik
• Is Part Of: Journal of separation science. Volume 38:Issue 20(2015:Oct.)
• Page Start: 3502
• Page End: 3507
• Publication Date: 2015-09-09
• Subjects: Counter‐current chromatography -- Senna -- Sennoside A -- Sennoside A1 -- Sennoside B; Separation (Technology) -- Periodicals; Chromatographic analysis -- Periodicals; 543.089
• DOI: 10.1002/jssc.201500672
• Languages: English
• ISSNs: 1615-9306

Abstract

Abstract : Senna leaf is widely consumed as tea to treat constipation or to aid in weight loss. Sennoside A, A1, and B are dirheinanthrone glucosides that are abundant and the bioactive constituents in the plant. They are isomers that refer to the ( R * R *), ( S * S *), and ( R * S *) forms of protons on C‐10 and C‐10′ centers and it is difficult to refine them individually due to their structural similarities. The new separation method using counter‐current chromatography successfully purified sennoside A, A1, and B from senna leaf ( Cassia acutifolia ) while reversed‐phase medium‐pressure liquid chromatography yielded sennoside A only. n ‐Butanol/isopropanol/water (5:1:6, v/v/v) was selected as the solvent system for counter‐current chromatography operation, and the partition coefficients were carefully determined by adding different concentrations of formic acid. High‐resolution mass spectrometry and NMR spectroscopy were performed to verify the chemical properties of the compounds.