The first instance of an acidic aqueous biphasic system (AcABS) based on tributyltetradecyl phosphonium chloride ([P44414 ][Cl]) and an acid is here reported. This AcABS exhibits pronounced thermomorphic behavior and is shown to be applicable to the extraction of metal ions from concentrated acidic solutions. Metal ions such as cobalt(II), iron(III), platinum(IV) and nickel(II) are found to par...

A novel density barrier material, Phase Lock Gel, has been formulated and optimized for use in enhancing the separation between aqueous and organic phases during organic extraction/ centrifugation of nucleic acids. Phase Lock Gel is inert, stable to heating, compatible with most enzymatic reactions of nucleic acids without sacrificing subsequent downstream applications, and can be easily and co...

Preparation of 2-Amino-2-Methyl-1 ,3Propandiol-Thymolphthalein Monophosphate (AMPD-TMP) Place 5 g (4.27 mmol) of magnesium thymolphthalein monophosphate (Eastman Kodak, Rochester, N. Y. 14650) in a 500-ml Erlenmeyer flask and add 100 ml of 2 mol/ liter HC1. Stir vigorously until the magnesium salt is well dispersed, add 100 ml of diethyl ether and continue stirring until a uniform suspension is...

Three phase partitioning (TPP) of starch and its derivatives was carried out by adding tert-butanol to the aqueous solution of the polysaccharides in presence of ammonium sulfate. Starch and its modified forms could be recovered in more than 90% yield in the form of an interfacial layer between aqueous and organic phases. Quantitative FT-IR spectral analysis of TPP-treated potato starch reveale...

The solvation of charge at the interface between an aqueous phase and hydrophobic medium is a key question in the mechanism of a wide range of biomolecular processes. These studies report the direct measurement of the molecular properties of water surrounding an isolated charge at an oil/water interface, and show how the solvating water structure changes with progressive charge build-up. At tra...

Three phase partitioning, a technique described for protein purification, has been employed for precipitation and purification of three different commercial preparations of alginates. Three phase partitioning works by the addition of /-butanol to aqueous solution of the polymer containing 20-30% ammonium sulphate (w/v). Three phases formed are: upper /-butanol layer, interfacial polymer precipi...

Artocarpus heterophyllus Lam. (Jackfruit) is traditionally used as anticonvulsant. The aqueous and methanol extracts of leaves of Artocarpus heterophyllus Lam. was evaluated for anticonvulsant activity by using Maximal electroshock (MES) and Strychnine induced convulsions models on Swiss albino mice. The methanol extracts of leaves of Artocarpus heterophyllus Lam. were found to be more signific...

Abstract. Aerosol viscosity is determined by mixture composition and temperature, with a key influence from relative humidity (RH) in modulating aerosol water content. particles frequently contain mixtures of water, organic compounds, inorganic ions, so we have extended the thermodynamics-based group-contribution model AIOMFAC-VISC to predict for aqueous electrolyte solutions organic–inorganic ...