1. After administration of 600mg of 3H-labelled aldosterone to human volunteers, 57 mg of homogeneous acid-labile conjugate was isolated from the urine and identified as aldosterone 18 beta-D-glucosiduronic acid. 2. Esterification and acetylation of the conjugate gave a tetra-acetate methyl ester, which, by measurement of the optical rotation and nuclear-magnetic-resonance spectrum, was shown t...

Currently, the design of microemulsions is focussed on the formulation of environmentally compatible systems formed by non-harmful amphiphiles and oils. The use of sugar-based surfactants allows the design of microemulsions where, instead of the temperature, the addition of short- or medium-chain alcohols tunes the curvature of the amphiphilic interface. In this work, the resulting temperature ...

Sucrose ester can be synthesized enzymatically using fatty acid or ester. The research has been carried out methyl as a substrate in the synthesis of sucrose enzymatically. Initially, was from crude palm kernel oil (off grade) through two-step reaction and obtained an content 96.5927%. Furthermore, esterification between Candida antarctica biocatalyst. This study aimed to determine effect time ...

The absorption and fluorescence spectra of 3-aminobenzo-1,2,4-triazine di-N-oxide (tirapazamine) have been recorded and exhibit a dependence on solvent that correlates with the Dimroth ET30 parameter. Time-dependent density functional theory calculations reveal that the transition of tirapazamine in the visible region is pi-->pi* in nature. The fluorescence lifetime is 98+/-2 ps in water. The f...

Fermented African oil bean (Pentaclethra macrophylla Benth) seed also referred to as "Ugba" is a known delicacy, mainly consumed by Africans. Human migration has also led to the introduction of this delicacy into most European and American countries. This study shows the changes in volatile components of African oil bean (P. macrophylla Benth) seed at different stages of fermentation. A quantit...

The problem of microbial growth in fuels, especially biofuels, is a very important issue. Water necessity for to occur. Unfortunately, it hard exclude all water from fuel systems during daily operations, when biodiesel added the mix. aim this work was investigate impact ionizing radiation on selected properties fatty acids methyl esters order evaluate possibility using irradiation techniques st...