Commercial solid-phase extraction columns packed with a stationary phase with bonded benzenesulfonic acid groups are readily converted to the silver ion form and can then be used for silver ion chromatography of lipids. To illustrate the utility of such procedures, methyl ester derivatives of fatty acids with zero to six double bonds were separated from each other by a simple stepwise elution s...

In the past twenty years evidence has accumulated that liquorice and related compounds accelerate the rate of healing of gastric ulcers. Powdered succus liquiritiae (Revers, 1948) and glycyrrhiza extract (Schulze, Franke, and Keller, 1954; Ferenbach, 1954; Ohrt, 1955) were shown to be beneficial in patients with gastric ulcer but adequately controlled clinical trials of liquorice extracts were ...

of amino alcohols using Z-L-Glu-L-Pro or Z-L-Glu-D-Pro as chiral counter ions and Hypercarb as the solid phase. Chirality 9: 650}655. Knox JH and Jurand J (1982) Separation of optical isomers by zwitterion pair chromatography. Journal of Chromatography 234: 222}224. Knox JH and Ross P (1997) Carbon-based packing materials for liquid chromatography. Advances in Chromatography, 74}162. Petterson ...

a blocker of postsynaptic acetylcholine receptors was isolated from venom of the eastern green mamba dendroaspis angusticeps, by gel filtration, ion-exchange and reverse phase high performance liquid chromatography. the isolated component blocks neuromuscular transmission and responses to exogenously applied acetylcholine in isolated chick biventer cervices preparations. these results suggest t...

Size exclusion chromatography (SEC) has been widely applied in protein separation based on their molecular sizes. Here we present a peptide mixture from 1kD to 6 kD separation on size exclusion chromatography column Zenix TM -80. The effect of different mobile phases on the peptides’ separation performances was also explored. In the separation of insulin, glucagon, angiotensin I and bradykinin,...