Results 151 to 160 of about 2,407 (196)

UV‐Guided Isolation of Fungal Metabolites by HSCCC

Journal of Liquid Chromatography & Related Technologies, 2005
Abstract Analytical standardised reversed phase liquid chromatography (RPLC) data can be helpful in finding a suitable solvent combination for isolation of fungal metabolites by high‐speed counter current chromatography. Analysis of the distribution coefficient (K D) of fungal metabolites in a series of biphasic systems consisting of n‐heptane–ethyl ...
Petur W. Dalsgaard, Kristian F. Nielsen, Thomas O. Larsen   +2 more
openaire   +1 more source

Comprehensive profiling of α-glucosidase inhibitors from the leaves of Rubus suavissimus using an off-line hyphenation of HSCCC, ultrafiltration HPLC-UV-MS and prep-HPLC

, 2020
The leaves of Rubus suavissimus (also called “Chinese sweet tea”) is used not only as a beverage tea and food additive but also as a folk herbal medicine for the treatment of diabetes mellitus.
Minzhuo Liu, Xujie Li, Qi Liu, Siqi Xie, Miao Chen, Lu-Ming Wang, Yinghui Feng, Xiaoqing Chen   +7 more
semanticscholar   +1 more source

Separation of Flavonoids from the Leaves of Oroxylum indicum by HSCCC

Chromatographia, 2008
A high-speed counter-current chromatography system (HPCCC) capable of rapid processing has been employed to separate seven flavonoids from a methanolic extract of the leaves of Oroxylum indicum by a one-step isocratic elution using a chloroform–methanol–water (9.5:10:5) two-phase system. LC, MS and NMR have identified the components from the extract as
Yuan Yuan, Wenli Hou, Minhai Tang, Houding Luo, Li-Juan Chen, Y. Hugh Guan, Ian A. Sutherland   +6 more
openaire   +1 more source

HSCCC Separation of a Stilbene Glucoside from Polygonum Multiflorum

Journal of Liquid Chromatography & Related Technologies, 1998
Abstract High-speed countercurrent chromatography (HSCCC) was applied to the separation and purification of 2,3,5,4′-tetrahydroxy stilbene-2-O-D-glucoside from dried roots (2.7g) of Polygonum multiflorum. The ethanol extract (240 mg) was first separated with the solvent system composed of ethyl acetate-ethanol-water at a volume ratio of 10:1:10 and the
Xueli Cao, Yu Tian, Tianyou Zhang, Pingniang Shen, Lianhua Zhu, Yoichiro Ito   +5 more
openaire   +1 more source

Application of High Speed Countercurrent Chromatography (HSCCC) to the Isolation of Kavalactones

Journal of Liquid Chromatography & Related Technologies, 2005
Abstract High speed countercurrent chromatography (HSCCC) was used to isolate the major kavalactones kavain, 7,8‐dihydrokavain, methysticin, 7,8‐dihydromethysticin, yangonin, and demethoxyyangonin. An ethanolic crude extract of kava root was subjected to HSCCC separation. Due to the presence of polymeric material, the sample load was limited.
Katrien Schäfer, Peter Winterhalter
openaire   +1 more source

Rapid and Simple Method for Quality Control of Raw Materials of Herbs by HSCCC

Journal of Liquid Chromatography & Related Technologies, 2007
Abstract The component of the traditional Chinese medicine (TCM) can be influenced by soils, climates, and growth stages. The quality of TCM mostly depends on the quality of the raw materials of the used herbs. A portable instrument and simple analysis method are urgently needed to be used for quality control of the raw herbs. In this study, analytical
Xiao Wang, Jianhua Liu, Tianyou Zhang, Yoichiro Ito   +3 more
openaire   +1 more source

147Nd quantification using HSCCC-purified samples

Talanta
Quantifying the fission product 147Nd in nuclear debris samples is an important component of post-detonation nuclear forensics. The most accurate quantifications are obtained when Nd is purified from all other fission products, actinides, activation products, and environmental matrix contained within the debris.
Alexander B. Weberg, Mateusz Dembowski, Nathan C. Smythe, Daniel Meininger, Susan J. Eaton, Alyssa-Marie N. Lucero, Jesse Murillo, Genevieve M. Patton, Jennifer M. White, Michael R. James, Randy J. Rendon, Jennifer R. Romero, George S. Goff, Susan K. Hanson, Iain May   +14 more
openaire   +2 more sources

An Efficient Strategy Based on Liquid-Liquid Extraction With Acid Condition and HSCCC for Rapid Enrichment and Preparative Separation of Three Caffeoylquinic Acid Isomers From Mulberry Leaves.

Journal of Chromatographic Science, 2019
Morus alba L. is a medicinal plant that contains a high amount of caffeoylquinic acids such as 3-caffeoylquinic acid (3-CQA), 5-caffeoylquinic acid (5-CQA) and 4-caffeoylquinic acid (4-CQA).
Li-tao Wang, M. Gao, Qing Yang, Qi Cui, Yue Jian, Xiaohong Fan, Li‐ping Yao, Yujie Fu   +7 more
semanticscholar   +1 more source

Separation and Purification of Three Flavonoids from Helichrysum arenarium (L.) Moench by HSCCC

Chromatographia, 2009
Following an initial clean-up step on a Sephadex LH-20 column, high-speed countercurrent chromatography was successfully applied to the isolation and purification of three flavonoids from a crude sample of Helichrysum arenarium (L.) Moench. HSCCC was performed with a two-phase solvent system composed of ethyl acetate–water (1:1, v/v).
Yi Yang, Yun Huang, Dongyu Gu, Abulimiti Yili, Gulnar Sabir, Haji Akber Aisa   +5 more
openaire   +1 more source

Preparation of highly purified oleuropein by combinative technology off line of HSCCC‐PHPLC based on dual wavelength

Journal of Food Science, 2021
Abstract Oleuropein is the main active substance in foods or functional foods produced from olive ( Olea europaea L.) leaves. In the present study, the combinative technology off line of HSCCC‐PHPLC based on dual wavelength was used to separate ...
Ningli Wang, Dong Pei, Yewei Liu, Jianteng Wei, Xinyi Huang, Duolong Di   +5 more
openaire   +2 more sources