The results showed that percent of boron removal increased with increasing amount of resin and reached 98% at 12 mg-resin/mL-solution. The boron removal did not effected much with the change of pH between 4 and
9. The boron adsorption isotherm is in good accordance with the Langmuir and Freundlich equations. The equilibrium adsorption amount of boron is 13.5 mmol g(-1) at optimum conditions which is 5 to 50 times higher than the other boron selective adsorbents recorded in literature. Desorption studies showed that 100% elution is possible with HCl. As a conclusion the glucamine carrying hydrogel beads can be effectively used for uptake of boron from aqueous solutions because of their high boron adsorption capacity and reusability. (C) 2011 Wiley Periodicals, Inc. J Appl Polym CX-6258 concentration Sci 121: 1610-1615, 2011″
“P>Glycosyltransferases (GTs) (EC 2.4.x.y) catalyze the transfer of sugar moieties to a wide range of acceptor molecules, such as sugars, lipids, proteins, nucleic acids,
antibiotics and other small molecules, including plant secondary metabolites. These enzymes can be classified into at least 92 families, of which family 1 glycosyltransferases (GT1), often referred Selleckchem Crenigacestat to as UDP glycosyltransferases (UGTs), is the largest in the plant kingdom. To understand how UGTs expanded in both number and function during evolution of land plants, we screened genome sequences from six plants (Physcomitrella patens, Selaginella moellendorffii, Populus trichocarpa, Oryza sativa, Arabidopsis thaliana and Arabidopsis lyrata) for the presence of a conserved UGT protein domain. Phylogenetic analyses of the UGT genes revealed a significant expansion of UGTs, with lineage specificity and a higher duplication rate in vascular plants after the divergence of Physcomitrella. The UGTs from the six species fell into 24 orthologous groups that contained genes derived from the common ancestor of these six species. Some orthologous groups contained multiple UGT families with known functions, suggesting that UGTs discriminate compounds
as substrates in a lineage-specific manner. Orthologous groups containing only a single UGT family tend to play a crucial Fludarabine role in plants, suggesting that such UGT families may have not expanded because of evolutionary constraints.”
“The objective of the present study was to develop a once-daily sustained-release (SR) matrix tablet of famotidine. Nine different formulations (F1-F9) were prepared by direct compression method using Avicel PH101 as filler/binder in the range of 41-27% in F1-F3, 18-22% in F4-F7, and 16-18% in F8-F9 and hydroxypropyl methylcellulose (4,000 cps) as hydrophilic matrix was used in F1-F3 from 19% to 30%, around 40% in F4-F7, and 42-45% in F8-F9. Talc and Aerosil were added in the ratio of 0.7-1.2%.