Separation of Allium Sulfur Amino Acids and Peptides by Thin-Layer Electrophoresis and Thin-Layer Chromatography.

Electrospun polyvinyl alcohol ultra-thin layer chromatography of amino acids.

Electrospun polyvinyl alcohol (PVA) ultrathin layer chromatographic (UTLC) plates were fabricated using in situ crosslinking electrospinning technique. The value of these ULTC plates were characterized using the separation of fluorescein isothiocyanate (FITC) labeled amino acids and the separation of amino acids followed visualization using ninhydrin. The in situ crosslinked electrospun PVA pla...

Separation of Cholesterol and Demosterol by Thin-layer Chromatography.

Thin - layer chromatography of bile acids *

Prepara t ive separation of bile acids has been achieved by adsorption and partition chromatography, and microscale separations have been made by various paper-chromatographic methods (1). Using these methods, good separations and acceptable sensitivity can be achieved. Methods are lacking, however, that permit rapid qualitative analysis of a large number of samples; e.g., for the monitoring of...

Thin layer chromatography of Krebs cycle acids.

A systematic appraisal of a large number of solvent systems was carried out for the separation of lactic, pyruvic and 3-hydroxybutyric acids and all of the KREBS cycle acids, except oxalosuccinic, using silica gel G and cellulose thin layer Chromatographie plates. Four solvent systems which allowed separation of various combinations of acids are described and the limits of this method of separa...

Strategies of sunscreen separation by thin layer chromatography.

So far sunscreens separation has been achieved primarily by HPLC or TLC on RP-18 or (less frequently) unmodified silica gel as stationary phase. The conditions of chromatographic separation published so far are not suitable for many combinations of UV filters found commonly in cosmetic products. It is therefore reasonable to seek alternative conditions that would make it possible to separate th...