One of the promising applications clathrate/gas hydrates is transport and storage natural gas. Semi-clathrate have received more attention due to milder pressure/temperature stability conditions compared ordinary clathrate hydrates. The most commonly reported semi-clathrate are formed from a combination gas + water quaternary ammonium salts. In this work, total 53 equilibrium data for methane T...

Two conjugates of marine polysaccharide (MPS) and bovine serum albumin (BSA) were prepared using two methods, periodate oxidation and reductive amination, with the intent of enhancing its immunogenicity. Sera samples from Balb/c mice immunized with the products named MPS-BSAp and MPS-BSAr respectively were evaluated by enzyme-linked-immunosorbent assay (ELISA). The results showed that mice immu...

1. Monosaccharides, amino sugars and N-acetylneuraminic acid were determined by using an original colorimetric assay procedure, based on the detection of formaldehyde released after periodate oxidation. A range of these compounds was investigated by this method and they were all found to obey Beer's law within the concentration range 0-0-6,umole/ml. 2. A simple method for the determination of 6...

The 1,2,3,4-tetrahydro-isoquinolin-4-one 4 reacts as an α-amino ketone with periodate to give various products, the major compound being 1-hydroxy-1,2-dihydro-3,4-isoquinolinedione 12. Upon stepwise oxidation with Hg(II)-EDTA the 4-hydroxyisoquinolinium ion 14 is detected as an intermediate and its further oxidation with periodate gives rise to an almost identical product spectrum. Because 12 r...

The ability of altered transfer ribonucleic acid to compete with binding of [14C]aminoacyland [l*C]tRNA was used as an estimate of its capacity to bind to ribosomes. Transfer ribonucleic acid with the terminal 3’-hydroxyl rA, ,C,A, and ,C,C,A enzymatically removed could bind to 70 S ribosomes with progressively lower efficiency; in contrast, binding to 30 S subunits was unimpaired. Transfer rib...

This paper describes a sensitive spectrophotometric method developed for determination of Ketoconazole (KC) in tablets based on amplification reactions. Ketoconazole was oxidized with periodate, resulting in formation of KC2+ and iodate ions. After masking the excess periodate with molybdate, the iodate was treated with iodide to release iodine. The liberated iodine was transformed to [Formula:...