Results 201 to 210 of about 117,843 (251)
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Fìtoterapìâ, 2011
Empirical rules for the selection of chromatographic conditions on flash chromatography cartridges were developed, with an emphasis on gradient mode. These rules were then tested with separation of extracts from important medicinal plants including Curcuma xanthorrhiza, Piper nigrum and Salvia milthiorrhiza.
Olivier Potterat, Matthias Hamburger
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Empirical rules for the selection of chromatographic conditions on flash chromatography cartridges were developed, with an emphasis on gradient mode. These rules were then tested with separation of extracts from important medicinal plants including Curcuma xanthorrhiza, Piper nigrum and Salvia milthiorrhiza.
Olivier Potterat, Matthias Hamburger
exaly +5 more sources
Chinese Journal of Chemical Engineering, 2019
Abstract Ultrasonic-assisted extraction (UAE) combined with medium pressure liquid chromatography (MPLC) was designed for carbazole separation from anthracene slag (AS). The effects of liquid/solid ratio, temperature, and extraction times on carbazole separation were investigated. When using CCl4 and ethyl acetate as extraction solvents and combining
Xian-Yong Wei +2 more
exaly +2 more sources
Abstract Ultrasonic-assisted extraction (UAE) combined with medium pressure liquid chromatography (MPLC) was designed for carbazole separation from anthracene slag (AS). The effects of liquid/solid ratio, temperature, and extraction times on carbazole separation were investigated. When using CCl4 and ethyl acetate as extraction solvents and combining
Xian-Yong Wei +2 more
exaly +2 more sources
Preparative Hydrocarbon Group Type Determination by Automated Medium Pressure Liquid Chromatography
Analytical Chemistry, 1980Dietrich H Welte
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Journal of Planar Chromatography - Modern TLC, 2022
Xiaoli Ma, Junlin Yan, Yewei Zhong
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Xiaoli Ma, Junlin Yan, Yewei Zhong
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Instrumentation and Separation Results of Medium Pressure Liquid Chromatography
Journal of Chromatographic Science, 1987This paper describes the assembly, usage, operation, and separation results of a medium pressure liquid chromatography (MPLC) instrument. Its ability to separate compounds with high resolution makes it a powerful tool for many chemistry laboratories. This equipment can be easily built from inexpensive commercially available materials.
J R, Hwu, J A, Robl, K P, Khoudary
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Journal of Separation Science, 2021
AbstractSaxifraga tangutica is widely used as a medicinal herb to treat hepatic diseases. Here, we developed a class separation method to separate gallic acid derivatives 1,1‐diphenyl‐2‐picrylhydrazyl inhibitors from the methanol extract of Saxifraga tangutica.
Jun Dang +5 more
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AbstractSaxifraga tangutica is widely used as a medicinal herb to treat hepatic diseases. Here, we developed a class separation method to separate gallic acid derivatives 1,1‐diphenyl‐2‐picrylhydrazyl inhibitors from the methanol extract of Saxifraga tangutica.
Jun Dang +5 more
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A low-cost medium-pressure liquid chromatography system for preparative separations
Chromatographia, 1979On the basis of theoretical and economic considerations a medium-pressure liquid chromatography system for preparative separations was developed. The choice of stationary phases with an average particle size of about 50 μm allows a dry column packing technique and makes possible short separation times with low pressure drop.
H. Loibner, G. Seidl
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Medium-pressure liquid chromatography of platinum metal ions on Spheron DEAE
Collection of Czechoslovak Chemical Communications, 1983Spheron DEAE (modified macroreticular hydroxyethylmethacrylate-ethylenedimethacrylate copolymer) was used for chromatographic separation and determination of Rh(III), Pd(II), and Pt(IV) in chloride medium. The most suitable composition of the mobile phase was looked for by studying the influence of hydrochloric acid concentration on the capacity ratios
František Vláčil +2 more
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Analytical medium-pressure liquid chromatography of cellulolytic enzymes on spheron ion exchangers
Journal of Chromatography A, 1983Abstract Cellulolytic enzymes from the cultivation liquid of Trichoderma viride-reesei were submitted to a rapid medium-pressure liquid chromatography, analytical and semipreparative, on weakly, medium and strongly acidic cation exchangers and on medium and strongly basic anion exchangers spheron 1000.
Z. Hostomská, O. Mikesš
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