Ion exchange resins are water-insoluble, cross-linked polymers containing salt-forming groups in repeating positions on the polymer chain. Bitter cationic drugs get adsorbed on to weak cationic exchange resins of carboxylic acid functionality like Indion 204, Indion 234 and Tulsion 335 to forms non-bitter complexes. The present investigation aims at taste masking of the bitter clarithromycin us...

In this paper, results on preparation of stable and uniform SERS solid substrates using macroporous silicon (pSi) with deposited silver and gold are presented. Macroporous silicon is produced by anodisation of p-type silicon in hydrofluoric acid. The as prepared pSi is then used as a template for Ag and Au depositions. The noble metals were deposited in three different ways: by immersion in sil...

The use of macroporous resins for the separation and purification of total flavonoids to obtain high-purity total flavonoids from Scorzonera austriaca was studied. The optimal conditions for separation and purification of total flavonoids in S. austriaca with macroporous resins were as follows: D4020 resin columns were loaded with crude flavonoid extract solution, and after reaching adsorptive ...

This study evaluated the shear bond strengths and etching patterns of seven self-adhesive resin cements to human enamel specimens which were subjected to one of the following surface treatments: (1) Polishing with #600 polishing paper; (2) Phosphoric acid; (3) G-Bond one-step adhesive; or (4) Phosphoric acid and G-Bond. After surface treatment, the human incisor specimens were bonded to a resin...

Acetic acid is one of the major inhibitors of spent sulfite liquor (SSL) fermentation for ethanol production. The objective of this study was to remove acetic acid from hardwood SSL using anion exchange resin in order to achieve effective fermentation with Pichia stipitis CBS6054. Lignosulfonate, as well as sulfate and sulfite ions in the SSL hindered the removal of acetic acid by anion exchang...

Corrosion is a primary factor compromising the safety and service life of steel structures. protection coatings are generally employed for structures that exposed to different aggressive environments. This research evaluated use biobased ion exchangers as sustainable means improving corrosion coatings.
 Two base polymer (vinyl coal-tar epoxy) were considered. The following types dosages in...

In an analysis of Australian grown P. radiata marked changes were found in the relative proportions and compositions of the resin acids. fattY acids, and fatty acid esters associated with heartwood formation. While the proportion of resin acids increased substantially in the heartwood, there was little change in resin acid composition from outer sapwood to inner heartwood. Extracts from wood of...

A protected tridecapeptide of the sequence Boc-Lys(2CIZ)-Arg(Tos)-Leu-Glu (OcHex)-Trp(For)-Ile-Ala-Ala-Ser(Bzl)-Arg(Tos)-Asn-Lys(2CIZ)-Gly-OH, representing residues 43-55 of the variable region of the heavy chain of mouse myeloma protein M603, was synthesized. It was assembled by a stepwise solid phase method designed to give a fully protected peptide in high yield and purity with minimal side ...