Separation of Nucleotides on Ecteola Cellulose.

Removal of porphyrins from diphtheria toxoid by selective adsorption on Ecteola-cellulose.

The occurrence of porphyrins in diphtheria toxin is well known (for references, see A. M. Pappenheimer, J. Biol. Chem. 167:251, 1947). In toxoid, the porphyrins remain as red pigments which, unless removed before the addition of alum, impart a red color to the final alum-precipitated toxoid. Removal of the porphyrins as a first step was examined by L. B. Holt (Developments in Diphtheria Prophyl...

Separation of haemoglobins on cellulose acetate.

Chromatographic separation of glycated nucleotides.

A high-performance liquid chromatographic method for the separation of nucleotide glycation reaction product(s) has been developed. The product(s) arising during in vitro glycation of a nucleotide (AMP, GMP or CMP) with a reducing sugar (ribose or glucose) were clearly resolved from the non-glycated constituents of the reaction mixture. The peak(s) of the glycated product(s) increased when an a...

Pebax-Modified Cellulose Acetate Membrane for CO2/N2 Separation

Carbon dioxide (CO2) release from the exhaust gas streams of power plants that burn fossil fuels contributes the most emission of this gas, which includes more than half of the greenhouse effects. Thus, the separation of CO2 from exhaust gases is one of the main environmental concerns. Membrane technology, due to many advantages, has attracted many research attentions among the various gas sepa...

Effect of charge asymmetry on adsorption and phase separation of polyampholytes on silica and cellulose surfaces.

The relation between the properties of polyampholytes in aqueous solution and their adsorption behaviors on silica and cellulose surfaces was investigated. Four polyampholytes carrying different charge densities but with the same nominal ratio of positive to negative segments and two structurally similar polyelectrolytes (a polyacid and a polybase) were investigated by using quartz crystal micr...