Results 21 to 30 of about 56,372 (290)

Preparative Isolation of Two Prenylated Biflavonoids from the Roots and Rhizomes of Sinopodophyllum emodi by Sephadex LH-20 Column and High-Speed Counter-Current Chromatography [PDF]

open access: yesMolecules, 2015
Two prenylated biflavonoids, podoverines B–C, were isolated from the dried roots and rhizomes of Sinopodophyllum emodi using a Sephadex LH-20 column (SLHC) and high-speed counter-current chromatography (HSCCC).
Yan-Jun Sun   +7 more
doaj   +2 more sources

Preparative Separation of Phenolic Compounds from Chimonanthus praecox Flowers by High-Speed Counter-Current Chromatography Using a Stepwise Elution Mode [PDF]

open access: yesMolecules, 2016
High-speed counter-current chromatography (HSCCC) has been successfully used for the separation of eight compounds from Chimonanthus praecox flowers. Firstly, the crude extract of Chimonanthus praecox flowers was dissolved in a two-phase solvent system ...
Huaizhi Li   +6 more
doaj   +2 more sources

Optimization of the Ultrasonic-Assisted Extraction of Bioactive Flavonoids from Ampelopsis grossedentata and Subsequent Separation and Purification of Two Flavonoid Aglycones by High-Speed Counter-Current Chromatography [PDF]

open access: yesMolecules, 2016
The fermented leaf of Ampelopsis grossedentata has been used as a beverage and folk medicine called “vine tea” in the southern region of China. In this paper, the optimum extraction conditions for the maximum recovery amounts of total flavonoids (TF ...
Hongbing Zhang   +4 more
doaj   +2 more sources

Efficient Preparation of Streptochlorin from Marine Streptomyces sp. SYYLWHS-1-4 by Combination of Response Surface Methodology and High-Speed Counter-Current Chromatography [PDF]

open access: yesMolecules, 2016
Since first isolated from the lipophilic extract of Streptomyces sp. SF2583, streptochlorin, has attracted a lot of attention because of its various pharmacological properties, such as antibiotic, antiallergic, antitumor, and anti-inflammatory activities.
Lin Li   +8 more
doaj   +2 more sources

High-Speed Counter-Current Chromatography in Separation and Identification of Saponins from Beta vulgaris L. Cultivar Red Sphere

open access: yesPolish Journal of Food and Nutrition Sciences, 2020
Saponins, natural plant compounds exhibiting health benefits, were extracted from B. vulgaris L. cultivar (cv.) Red Sphere and separated by high-speed counter-current chromatography (HSCCC) in a new solvent system composed of: TBME-BuOH-ACN-H2O (1:2:1 ...
Aneta Ewa Spórna-Kucab   +1 more
doaj   +1 more source

Separation and Preparation of Sanguinarine and Chelerythrine from Macleaya cordata Root by High Speed Counter-Current Chromatography

open access: yesShipin gongye ke-ji, 2022
The aim of this study was to develop a method for the separation and preparation of high purity sanguinarine and chelerythrine by conventional high speed counter-current chromatography.
Changqing JIA   +4 more
doaj   +1 more source

Improved spiral tube assembly for high-speed counter-current chromatography [PDF]

open access: yesJournal of Chromatography A, 2009
The original spiral tube support (STS) assembly is improved by changing the shape of the tubing, with 1-cm presses perpendicularly along the length. This modification interrupts the laminar flow of the mobile phase. The tubing in the four return grooves to the center of the rotor is flattened by a specially made pressing tool to increase the number of ...
Y, Ito   +4 more
openaire   +2 more sources

Separation of avermectin components from Streptomyces avemitilis extraction using high-speed counter-current chromatography [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2013
Three compounds of antibiotics-avermectins from fertilizing product of Streptomyces avemitilis are achieved by high-speed counter-current chromatography (HSCCC) with a two-phase solvent system composed of n-hexane-ethyl acetate-methanol-water (6:
Su Weike, Hou Zhuoni, Liang Xianrui
doaj   +1 more source

Separation of Four Flavonoid Glycosides from Hydrocotyle sibthorpioides Lam. by High-speed Counter-current Chromatography

open access: yesShipin gongye ke-ji, 2022
For an improved study of flavonoid glycosides of great polarity from Hydrocotyle sibthorpioides Lam (HSL), the large polar flavonoid glycosides were extracted with n-BuOH, purified by DM 301 macroporous resin, Sephadex LH-20 and reversed-phase silica gel
Daoguang SONG, Zhi CHEN
doaj   +1 more source

Isolation and purification of lignans from Schisandra chinensis by combination of silica gel column and high-speed counter-current chromatography [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2013
Silica gel column combined with high-speed counter-current chromatography separation was successfully applied to the separation of schizandrin (I), angeloylgomisin H (II), gomisin A (III), schisantherin C (IV), deoxyschizandrin (V), γ-schisandrin (VI)
Sun Yu   +4 more
doaj   +1 more source

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