Anion exchangers, hydrophobic

Weak Cation Exchange Strong Anion Exchange Hydrophobic IMAC-lmmobilized Metal Hydrophilic... 

Lipoteichoic acids (from gram-positive bacteria) [56411-57-5J. Extracted by hot phenol/water from disrupted cells. Nucleic acids that were also extracted were removed by treatment with nucleases. Nucleic resistant acids, proteins, polysaccharides and teichoic acids were separated from lipoteichoic acids by anion-exchange chromatography on DEAE-Sephacel or by hydrophobic interaction on octyl-Sepharose [Fischer et al. Ear J Biochem 133 523 1983]. 

Feibush, B. and Santasania, C. T., Hydrophilic shielding of hydrophobic, cation- and anion-exchange phases for separation of small analytes direct injection of biological fluids onto high performance chromatographic columns, /. Chromatogr., 544, 41, 1991. 

Floyd, T. R., Yu, L. W., and Hartwick, R. A., Use of diluted anion-exchange and hydrophobic properties in separating single-stranded oligodeoxyribonu-cleotides on mixed-ligand stationary phases, Chromatographia, 21, 402, 1986. 

Poly(HA) depolymerases - as far as it has been tested - do not bind to anion exchangers such as DEAE (at neutral pH) but have a pronounced affinity to hydrophobic materials. Therefore, many purification protocols include hydrophobic interaction chromatography. 

The applications of hydrophobic amine salts (see Table 5) as anion exchange extractants to recover a diverse range of metals in the form of anionic, usually chloro, complexes was reviewed4 in CCC (1987). The order of preference shown by this class of extractants for simple inorganic anions... 

Growth conditions of Synechocystis sp. PCC 6803 and subsequent isolation of thylakoid membranes were described in literature [8], From these membranes, PS I was extracted by dodecyl-B-D-maltoside treatment and purified by two successive HPLC steps, using first an anion exchange column (Poros 50 HQ, PerSeptive) and second a hydrophobic interaction column (Poros 20 Butyl, PerSeptive). The purification of trimeric PS I is described in detail in literature [9],... 

Ion exchange resins based on poly(styrene-divinylbenzene) backbones display mixed mode retention mechanisms. The ion exchange functionality (sulfonic acid or carboxylic acid for cation exchangers and quartemary or primary, secondary, or tertiary amines for anion exchangers) contributes to the ionic mechanism and the backbone polymer to hydrophobic retention. This is exemplified... 

The DASPE nanoparticles have been synthesized by the ion association reaction between the dye cation (note that the native compound is an iodide salt DASPE-I) and the hydrophobic borate anion (TPB or TFPB-) in the presence of neutral polymer stabilizer polyvinylpyrrolidone (PVP) in aqueous solution [38, 39]. In the absence of PVP, mixing of aqueous TPB- (or TFPB-) and DASPE+ solutions at the same molar fraction yielded the orange opaque solid dispersion composed of the anion-exchanged dye species, DASPE-TPB (or... 

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