Results 141 to 150 of about 746 (163)
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Journal of Liquid Chromatography & Related Technologies, 2003
Abstract High‐speed countercurrent chromatography (HSCCC) was applied for the separation of a crude Monascus purpureus extract. The separation was carried out using a two‐phase solvent system composed of n‐hexane/ethyl acetate/methanol/water (1/1/1/1, v/v) at a flow rate of 1.0 mL/min.
Qizhen Du, Ming Xia, Yoichiro Ito
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Abstract High‐speed countercurrent chromatography (HSCCC) was applied for the separation of a crude Monascus purpureus extract. The separation was carried out using a two‐phase solvent system composed of n‐hexane/ethyl acetate/methanol/water (1/1/1/1, v/v) at a flow rate of 1.0 mL/min.
Qizhen Du, Ming Xia, Yoichiro Ito
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High Speed Countercurrent Chromatography/Fourier Transform Infrared (HSCCC/FT-IR) Spectrometry
SPIE Proceedings, 1985High Speed Countercurrent Chromatography/Fourier transform infrared (HSCCC/FT-IR) spectrometry is present-ed. High solute-to-solvent ratios can be obtained in separations performed using HSCCC. At these high solute concentrations it is possible to obtain spectra of solutes without solvent elimination, even in the presence of polar solvents, such as ...
Rodolfo J. Romanach, James A. de Haseth
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Journal of Liquid Chromatography & Related Technologies, 2005
Abstract High speed countercurrent chromatography (HSCCC) was used for the separation of triterpene saponins of two components from silica gel column chromatography of bitter gourd crude extract (Momordica charantia L), with two biphasic solvent systems composed of methyl tert‐butyl ether‐n‐butanol‐methnaol‐water in the proportions of 1∶2∶1∶5 and 1∶3∶1∶
Qizhen Du, Jie Yuan
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Abstract High speed countercurrent chromatography (HSCCC) was used for the separation of triterpene saponins of two components from silica gel column chromatography of bitter gourd crude extract (Momordica charantia L), with two biphasic solvent systems composed of methyl tert‐butyl ether‐n‐butanol‐methnaol‐water in the proportions of 1∶2∶1∶5 and 1∶3∶1∶
Qizhen Du, Jie Yuan
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Spiral Disk Assembly: An Improved Column Design for High-Speed Countercurrent Chromatography (HSCCC)
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