Articles with "counter current" as a keyword



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Direct from solid natural products to pure compounds in a single step: Coupling online extraction with high-speed counter-current chromatography.

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Published in 2018 at "Journal of separation science"

DOI: 10.1002/jssc.201800360

Abstract: Extraction is the most important step in the purification of bioactive compounds from natural products. This study introduces a simple online extraction strategy coupled with high-speed counter-current chromatography for efficient extraction and purification of bioactive… read more here.

Keywords: extraction; natural products; counter current; speed counter ... See more keywords
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Comprehensive separation of iridoid glycosides and triterpenoid saponins from Dipsacus asper with salt-containing solvent by high speed counter-current chromatography coupled with recycling mode.

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Published in 2020 at "Journal of separation science"

DOI: 10.1002/jssc.201901186

Abstract: The roots of Dipsacus asper Wall as a commonly used traditional Chinese medicine has been used for tonifying liver and kidney and strengthening bones and muscles. However, an effective separation strategy for comprehensive and rapid… read more here.

Keywords: chromatography; separation; counter current; speed counter ... See more keywords
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Recent progress in separation prediction of counter-current chromatography.

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Published in 2020 at "Journal of separation science"

DOI: 10.1002/jssc.202000473

Abstract: As a liquid-liquid partition chromatography, counter-current chromatography has advantages in large sample loading capacity without irreversible adsorption, which has been widely applied in separation and purification fields. The main factors, including partition coefficient, two-phase solvent… read more here.

Keywords: chromatography; process counter; separation; counter current ... See more keywords
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The applicability of high-speed counter-current chromatography for preparative separation of biosynthesis products: Glycosylation products as example.

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Published in 2021 at "Journal of separation science"

DOI: 10.1002/jssc.202100544

Abstract: Biosynthesis is a promising way to manufacture desired products, however, the purification of its final products is a tough work due to the huge amount of reaction matrix. Liquid stationary phase of high-speed counter-current chromatography… read more here.

Keywords: chromatography; counter current; speed counter; current chromatography ... See more keywords
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Large-scale preparation of two minor polar polyphenols from Phyllanthus emblica Linn. by macroporous resin column chromatography and high temperature preparative high-speed counter-current chromatography.

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Published in 2022 at "Journal of separation science"

DOI: 10.1002/jssc.202200376

Abstract: In the present study, an efficient strategy for large-scale preparation of two minor polar polyphenols from Phyllanthus emblica L. has been established by macroporous resin column chromatography and high temperature preparative high-speed counter-current chromatography. Macroporous… read more here.

Keywords: high speed; speed counter; counter current; preparative high ... See more keywords
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Elution-extrusion counter-current chromatographic separation and theoretical mechanism of antioxidant from Robinia pseudoacacia flower.

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Published in 2023 at "Journal of separation science"

DOI: 10.1002/jssc.202200958

Abstract: Robinia pseudoacacia flowers have attracted much attention because of numerous bioactivities. In this study, its extract showed the potential scavenging ability for 2,2'-azinobis-(3-ethylbenzthiazoline-6-sulphonate) and 1,1-diphenyl-2-picrylhydrazyl free radicals. Under the guidance of antioxidant activity, the antioxidant… read more here.

Keywords: elution extrusion; counter current; robinia pseudoacacia; separation ... See more keywords
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An efficient high-speed counter-current chromatography method for the preparative separation of sesquiterpenoids from the rhizomes of Cyperus rotundus L. combined with evaluation the anti-inflammation activity in vitro and molecular docking.

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Published in 2023 at "Journal of separation science"

DOI: 10.1002/jssc.202300042

Abstract: Cyperus rotundus L. has been extensively used in ancient medication for the treatment of different disorders worldwide, in which sesquiterpenes are the most representative components. In this study, sesquiterpenes were effectively purified by two-dimensional counter-current… read more here.

Keywords: cyperus rotundus; anti inflammation; current chromatography; counter current ... See more keywords
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An efficient isolation and purification of broad partition coefficient range ginsenosides from roots of Panax quinquefolium L. by linear gradient counter-current chromatography coupled with preparative HPLC.

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Published in 2023 at "Journal of separation science"

DOI: 10.1002/jssc.202300046

Abstract: As famous health food, roots of Panax quinquefolium L. possessed immune regulation and enhancement of the central nervous system, in which ginsenosides are the main active component with different numbers and positions of sugars, causing… read more here.

Keywords: quinquefolium; roots panax; gradient counter; counter current ... See more keywords
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Experimental investigation on spontaneous counter‐current imbibition in water‐wet natural reservoir sandstone core using MRI

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Published in 2017 at "Magnetic Resonance in Chemistry"

DOI: 10.1002/mrc.4563

Abstract: Counter‐current imbibition is a process whereby a wetting phase spontaneously imbibes into a porous media, displacing the non‐wetting phase. This process is considered an important oil recovery mechanism during water flooding in fractured oil reservoirs.… read more here.

Keywords: water; imbibition; counter current; oil ... See more keywords
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Application of an agro-industrial waste for the removal of As (III) in a counter-current multiphase fluidized bed

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Published in 2018 at "International Journal of Environmental Science and Technology"

DOI: 10.1007/s13762-018-1651-9

Abstract: Arsenic pollution in groundwater has been identified as a major hazard in developing countries. In this purview, Karanja or Pongamia pinnata seed cake, a biodiesel residue has been proposed to being utilized to curb the… read more here.

Keywords: seed; removal; agro industrial; industrial waste ... See more keywords
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Liquid distribution and hold-up measurement in counter current flow packed column by electrical capacitance tomography

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Published in 2018 at "Chemical Engineering Journal"

DOI: 10.1016/j.cej.2018.07.016

Abstract: Abstract In order to meet the requirements and well suit for in-situ process measurement of industrial scale gas-liquid mass transfer applications, such as natural gas processing and post-combustion carbon capture, electrical capacitance tomography (ECT) is… read more here.

Keywords: tomography; liquid; gas; packed column ... See more keywords