Results 161 to 170 of about 19,209,961 (222)

Recent Advances in Screening and Separating Active Components From Natural Products Based on High-Speed Countercurrent Chromatography.

Journal of Separation Science
Natural products play a vital role in human health because people find that they can reduce the incidence of many diseases, such as cancer and cardiovascular diseases.
Xingcui Wang, Xin-Yi Huang, Fu-xin Zhang, Jules Muhire, Duo-Long Di, J. Hai, Dong Pei   +6 more
semanticscholar   +1 more source

The neuroprotective effects of isoquercitrin purified from apple pomace by high-speed countercurrent chromatography in the MPTP acute mouse model of Parkinson's disease.

Food & Function, 2021
Parkinson's disease is the second most common neurodegenerative disease. Researchers have shown that oxidative stress and apoptosis play an important role in the Parkinson's disease process.
Cong Liu, Wenjuan Wang, Hao Li, Jiangang Liu, Peng Zhang, Yong Cheng, Xiaoyan Qin, Yang Hu, Yun Wei   +8 more
semanticscholar   +1 more source

Purification of triterpenoid saponins and 25R/25S-inokosterone from Achyranthes bidentata Bl. by high-speed countercurrent chromatography coupled silver nitrate coordination.

Journal of Separation Science
An effective method by high-speed countercurrent chromatography coordinated with silver nitrate for the preparative separation of sterones and triterpenoid saponins from Achyranthes bidentata Blume was developed.
Tong Niu, Jin-Qian Yu, Zhenqiang Wang, Chuang-Chuang Wang, Ying-Jian Guo, Jian Li, Xiao Wang   +6 more
semanticscholar   +1 more source

A novel off-line multi-dimensional high-speed countercurrent chromatography strategy for preparative separation of bioactive neolignan isomers from Piper betle. L.

Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 2023
Separation and purification of naturally occurring isomers from herbs are still challenging. High-speed counter-current chromatography (HSCCC) has been applied to isolate natural products.
Chuan-Yun Xiao, Jian-Ming He, Jiao Huang, Xiao-Min Guo, Ping Yang, Qing Mu   +5 more
semanticscholar   +1 more source

Effective separation of maslinic acid and oleanolic acid from olive pomace using high-speed shear off-line coupled with high-speed countercurrent chromatography and their antibacterial activity test.

Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
In this work, a high-speed shear extraction off-line coupling high-speed countercurrent chromatography method was developed to separate maslinic acid and oleanolic acid from olive pomace.
Kun Yang, Sheng-Bing Wang, Dong Pei, Lu-Mei Pu, Xin-Yi Huang   +4 more
semanticscholar   +1 more source

Preparative isolation and purification of theaflavins and catechins by high-speed countercurrent chromatography

Journal of Chromatography B, 2008
High-speed countercurrent chromatography (HSCCC) has been applied for the separation of theaflavins and catechins. The HSCCC run was carried out with a two-phase solvent system composed of hexane-ethyl acetate-methanol-water-acetic acid (1:5:1:5:0.25, v/v) by eluting the lower aqueous phase at 2 ml/min at 700 rpm.
Kunbo, Wang, Zhonghua, Liu, Jian-an, Huang, Xinrong, Dong, Lubing, Song, Yu, Pan, Fang, liu   +6 more
openaire   +2 more sources

Preparative Separation of Polyphenols from Tea by High-Speed Countercurrent Chromatography

Journal of Agricultural and Food Chemistry, 2000
High-speed countercurrent chromatography (HSCCC) was applied to the separation of polyphenols from tea leaves (Camellia sinensis L.). The capability of HSCCC to isolate pure tea polyphenols from complex mixtures on a preparative scale was demonstrated for catechins, flavonol glycosides, proanthocyanidins, and strictinin from green and black tea.
A, Degenhardt, U H, Engelhardt, C, Lakenbrink, P, Winterhalter   +3 more
openaire   +2 more sources

Separation of astragaloside IV from Astragalus membranaceus based on high-speed countercurrent chromatography in continuous injection mode.

Phytochemical Analysis
INTRODUCTION Astragaloside IV (AS-IV) is an index for the quality evaluation of the traditional Chinese medicine Astragalus and an important material basis for Astragalus to exert its medicinal effects, and it is difficult to obtain a single AS-IV by ...
Yin-Di Zhao, Qianxia Su, Ning-li Wang, Dong Pei, Xin-Yi Huang   +4 more
semanticscholar   +1 more source

Isolation of Achyrobichalcone from Achyrocline satureioides by High- Speed Countercurrent Chromatography

Current Pharmaceutical Biotechnology, 2015
Achyrobichalcone is a biflavonoid recently found in Achyrocline satureioides. This substance has unprecedented chemical structure and occurrence, but resembles other bioactive bichalcones, which have important pharmacological properties, such as anticancer activity.
Juliana P, Carini, Gilda G, Leitão, Paulo H, Schneider, Cristiane C, Santos, Fernanda N, Costa, Maribete H, Holzschuh, Fábio, Klamt, Valquiria L, Bassani   +7 more
openaire   +2 more sources

Prediction model for retention volumes of the three-phase solvent system in high-speed countercurrent chromatography.

Journal of Separation Science
Owing to its ability to separate substances with a broad scope of polarities, exploring the three-phase solvent systems (TPSSs) with high-speed countercurrent chromatography is a topic of interest in separation science, and their retention volumes should
Jules Muhire, Fu-xin Zhang, Xiao Sun, Xingcui Wang, Dong Pei, Xin-Yi Huang, Duo-Long Di   +6 more
semanticscholar   +1 more source