title: How to realize the linear scale-up process for rapid purification using high-performance counter-current chromatography.
abstract: This study used the isolation of six constituents from Selaginella tamariscina as an example to demonstrate how to achieve rapid and predictable linear scale-up processes in both normal- and reversed-phase high-performance counter-current chromatography. After systematic optimization of solvent systems, sample concentration, sample loading volume, rotation speed and flow rate on the analytical Mini-DE centrifuge, the optimized parameters obtained were directly transferred to the preparative Midi-DE centrifuge, with nearly the same purities, resolutions and elution times but with 50 times the throughput. Amentoflavone (446.7 mg, 97.8%), robustaflavone (21.6 mg, 89.4%), bilobetin (80.7 mg, 92.7%), hinokiflavone (15.1 mg, 85.5%), isocryptomerin (34.8 mg, 89.6%) and an apigenin-diglucoside (46.3mg, 96.4%) were obtained with amounts and purities shown in parentheses as analysed by HPLC. The process, therefore, offers an efficient and rapid method of obtaining sufficient quantities of target compounds with significantly increased throughput after a linear scale-up.
authors.affiliation: State Key Laboratory of Biotherapy, West China Hospital, West China Medical School, Sichuan University, Keyuan Road 4#, Gaopeng Street, Chengdu 610041, China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Yuan
authors.forename: Biqin
authors.initials: B
authors.lastname: Wang
authors.forename: Lijuan
authors.initials: L
authors.lastname: Chen
authors.forename: Houding
authors.initials: H
authors.lastname: Luo
authors.forename: Derek
authors.initials: D
authors.lastname: Fisher
authors.forename: Ian A
authors.initials: IA
authors.lastname: Sutherland
authors.forename: Yuquan
authors.initials: Y
authors.lastname: Wei
mesh_terms: D044946:Biflavonoids / Q000737:chemistry / Q000302:isolation & purification; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D003377:Countercurrent Distribution / Q000379:methods*; D015394:Molecular Structure; D015203:Reproducibility of Results; D032503:Selaginellaceae / Q000737:chemistry
chemical_list: D044946:Biflavonoids; C011164:amentoflavone