An antifungal bioemulsifier compound was produced from a novel strain of Bacillus thuringiensis pak2310. To accentuate the production and as the first step to improve the yield, a central composite design (CCD) was used to study the effect of various factors like minimal salts (1X and 3X), glycerol concentration (2% and 4%), beef extract concentration (1% and 3%), and sunflower oil concentratio...

We present here an easy method to modify the surface chemistry of polymeric microcapsules of perfluorooctyl bromide used as ultrasound contrast agents (UCAs). Capsules were obtained by a solvent emulsification-evaporation process with phospholipids incorporated in the organic phase before emulsification. Several phospholipids were reviewed: fluorescent, pegylated and biotinylated phospholipids....

Surfactant-enabled asymmetric ATA-catalyzed reductive aminations in aqueous buffered media are described, representative of the enhanced levels conversion made possible by presence a nonionic surfactant water, thereby enabling 1-pot chemoenzymatic catalysis.

In this study, goat fat (Capra hircus) and melon oil were extracted and used to formulate self-nanoemulsifying drug delivery systems (SNEDDS) based on either goat fat alone or its admixture with melon oil by employing escalating ratios of oil(s), surfactant blend (1 : 1 Tween 60 and Tween 80), and cosurfactant (Span 85), with or without carbosil, a glidant, for the delivery of indomethacin. The...

– A lattice Boltzmann model is introduced which simulates oil–water–surfactant mixtures. The model is based on a Ginzburg-Landau free energy with two scalar order parameters. Diffusive and hydrodynamic transport is included. Results are presented showing how the surfactant diffuses to the oil–water interfaces thus lowering the surface tension and leading to spontaneous emulsification. The rate ...

Implementation of controlled/living radical polymerization in miniemulsion (typically with oil droplet diameter of 20-500 nm) for synthesis of well-defined, polymeric nanoparticles is of particular interest as miniemulsions possess the inherent advantage that ideally each monomer droplet is transformed into a polymer particles(Zetterlund et al., 2008). However, the high energy requirement for m...

Eucalyptus oil (Eucalyptus globulus) nanoemulsion was formulated using low-and high-energy emulsification methods. Development of nanoemulsion was optimized for system parameters such as emulsifier type, emulsifier concentration, and emulsification methods to obtain a lower droplet size with greater stability. The minimized droplet diameter was achieved using the high-energy method of ultrasoni...

Emulsions stabilized by solid particles, called Pickering emulsions, offer promising applications in drug delivery, cosmetics, food science and the manufacturing of porous materials. This potential stems from their high stability against coalescence and 'surfactant-free' nature. Generally, Pickering emulsions require that the solid particles are wetted by both phases and as a result, the adsorp...

Biosurfactants were found to be a suitable candidate for environment clean-up and as an alternative conventional treatment systems. In the present study, polyaromatic hydrocarbon degrading organism Bacillus halotolerans was screened its ability produce biosurfactant during degradation. The bio-surfactant activity of by using various methods like oil spreading technique, emulsification assay, fo...

Biosurfactants are a functionally and structurally heterogeneous group of biomolecules produced by multiple filamentous fungi, yeast, bacteria, characterized their distinct surface emulsifying ability. The genus Bacillus is well studied for biosurfactant production as it produces various types lipopeptides, example, lichenysins, bacillomycin, fengycins, surfactins. lipopeptides possess broad sp...