Shandong Science ›› 2022, Vol. 35 ›› Issue (6): 1-7.doi: 10.3976/j.issn.1002-4026.2022.06.001

• Traditional Chinese Medicine and Natural Active Products •     Next Articles

Separation and purification of polyphenols from Taraxaci Herba by counter-current chromatography

GAO Jie1,2,3(), SONG Xiang-yun1, MA Tian-yu1, LIU Feng1, ROMAN Kachan3,*(), WANG Xiao1,*()   

  1. 1. Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
    2. Kiev College, Qilu University of Technology (Shandong Academy of Sciences),Jinan 250353, China
    3. Kyiv National University of Technologies and Design, Kiev 01011, Ukraine
  • Received:2021-11-19 Online:2022-12-20 Published:2022-12-02
  • Contact: ROMAN Kachan, WANG Xiao E-mail:alice8600@163.com;kachanr@gmail.com;wangx@sdas.org

Abstract:

Six polyphenolic compounds were separated and extracted from Taraxaci Herba through a combination of pH-zone-refining counter-current chromatography (pH-ZRCCC) and high-speed counter-current chromatography (HSCCC). In pH-ZRCCC,ethyl acetate-acetonitrile-water (4:1:5, V/V) was selected as the solvent system, trifluoroacetic acid (10 mmol/L) was added to the upper phase as the stationary phase, and ammonia (10 mmol/L) was added to the lower phase as the mobile phase. Caffeic acid (60.2 mg with a purity of 98.1%), p-hydroxycinnamic acid (6.3 mg with a purity of 98.8%), and mixture A (590 mg) were separated from 1.6 g of crude ethyl acetate extract of Herba Taraxaci. After further using HSCCC, petroleumether-ethyl acetate-methanol-water (1:4:1:4, V/V) was selected as the solvent system.Consequently, 1-O-caffeoylglycerol (7.7 mg with a purity of 82.2%), 3,4-dihydroxyphenylacetic acid (5.4 mgwith a purity of 24.8%), protocatechuic acid (6.2mg with a purity of 95.3%) and p-hydroxyphenylacetic acid (3.4 mgwith a purity of 89.0%) were obtained from 400 mg of mixture A.The method has a large preparation volume and good reproducibility, and is suitable for the separation and purification of Taraxaci Herba polyphenol compounds.

Key words: Taraxaci Herba, polyphenols, high-speed counter current chromatography, pH-zone-refining counter-current chromatography, separation and purification

CLC Number: 

  • R284.2