Bacillus subtilis K1 isolated from aerial roots of banyan tree secreted mixture of surfactins, iturins and fengycins with high degree of heterogeneity. The extracellular extract consisting of mixture of these cyclic lipopeptides exhibited very good emulsification activity as well as excellent emulsion stability. The culture accumulated maximum surfactant up to 48 h of growth during batch fermen...

the aim of this investigation was to design and develop nanoemulsions (nes) as novel ophthalmic delivery systems for brinzolamide (bzd). phase behavior of quaternary systems composed of triacetin and capryoltm 90 (selected oils, screened through the solubility studies), various surfactants (namely, cremophor rh 40, brij 35, labrasol and tyloxapol), transcutol p (as co-surfactant) and water a...

This study was aimed to develop the haloperidol (HPL) loaded solid lipid nanoparticles (SLNs) for brain targeting through intranasal route. SLNs were fabricated by emulsification diffusion technique using glyceryl behenate as and tween 80 a surfactant. evaluated particle size, zeta potential, structure, entrapment efficiency, state characterization differential scanning calorimetry (DSC), in-vi...

Large portions of rice bran protein cannot be solubilized by mild solvents, but endoprotease use increases protein recovery. Bran was treated with 2 commercial proteases to achieve 8% to 9% peptide bond hydrolysis. The exoplus endprotease was preferred to just using endopeptidases as it allowed the production of protein hydrolysates with enhanced functional properties. Solubility and emulsifica...

In this paper, quaternary ammonium salt type Gemini surfactant G12 was designed and synthesized, its structure characterized by infrared nuclear magnetic resonance. The surface tension, permeability, emulsification ability cleaning of insulator contamination in the composite system were tested, test results showed that it had low critical micelle concentration (cmc) good performance. Due to pre...

Poly-(alkylcyanoacrylate) ester particles have been used for the preparation of different formulations ranging from ophthalmic delivery systems to cancer chemotherapy carriers in clinic. The aim of this study was to prepare and characterize poly-(methyl ethyl cyanoacrylate) (PMECA) particles containing 5-aminosalicylic acid (5-ASA). PMECA particles were prepared using the inverse emulsification...

Rhamnolipid biosurfactants produced mainly by Pseudomonas sp. had been reported to possess a wide range of potential industrial application. These biosurfactants are produced as monorhamnolipid (MRL) and di-rhamnolipid (DRL) congeners. The present study deals with rhamnolipid biosurfactants produced by three bacterial isolates from crude oil. Biosurfactants produced by one of the strains (named...

Bibi Hakimeh oilfield consists of more than 145 oil producing wells. Its Oligomiocene Asmari reservoir is dominantly made of limestone. The act of a reverse fault on the north flank of Bibi-Hakimeh Field caused a significant thickness reduction in Gachsaran formation in the way that in some drilled wells, members No. 2, 3, 4, 5 and 6 of Gachsaran cap rock have been totally eliminated. This caus...

The kinetics of breaking and phenol extraction efficiency the bio-emulsion in liquid-liquid dispersed column are studied by varying bio-surfactant (lecithin) concentration, oil: water ratio, emulsification speed distributor nozzle. Among range parameters studied, maximum 79 % emulsion stability beyond 60 minutes is achieved at optimized conditions. compared with an prepared using Span-80. Even ...