Academic literature on the topic 'Self-emulsifying capsule'

Micro-/nanomotors colloidal particles have attracted increasing interest as composite surfactants, owing to the combined advantages of both Janus solid surfactants and micro-/nanomotors. Here we put micro-/nanomotors colloidal particles into hollow polymeric micro-encapsulates. An intelligent polymeric nanocapsule was prepared for enhanced oil recovery by the self-assembly method. The particle size range of the polymeric capsule can be controlled between 20 to 1000 nm by adjusting the cross-linking thickness of the capsule’s outer membrane. The average particle size of polymeric capsules prepared in the study was 300 nm. The structure and properties of the Intelligent polymeric nanocapsule was characterized by a wide range of technics such as Fourier transform infrared spectroscopy, scanning electron microscopy by laser diffraction, fluorescence microscopy, pendant drop tensiometer, laser particle size instrument, and interface tension analyzer. It was found that the intelligent polymeric nanocapsule exhibited significant interfacial activity at the oil-water interface. When the Janus particles’ concentration reached saturation concentration, the adsorption of the amphiphilic nanoparticles at the interface was saturated, and the equilibrium surface tension dropped to around 31 mN/m. When the particles’ concentration reached a critical concentration of aggregation, the Gibbs stability criterion was fulfilled. The intelligent polymeric nanocapsule system has a better plugging and enhanced oil recovery capacity. The results obtained provide fundamental insights into the understanding of the assembly behavior and emulsifying properties of the intelligent polymeric nanocapsule, and further demonstrate the future potential of the intelligent polymeric nanocapsule used as colloid surfactants for enhanced oil recovery applications.

<p><strong>Objective: </strong>There are many successful products on the market which are the culmination of the self-micro-emulsification lipid technology applications. Despite the importance of lipid-based formulations, these systems have some limitations including; stability, complexity during large scale manufacturing process and limited dosage forms to such as soft gelatin capsule. In order to overcome these limitations, the prospect of converting self-micro-emulsifying drug delivery systems (SMEDDS) into tablet dosage form was investigated in this study.</p><p><strong>Methods: </strong>A self-micro-emulsifying oil formulation representing type III A lipid class composed of glycerox 767HC/croduret 40 ss at ratios of (80/20) was converted into solid SMEDDS using solid carrier adsorption method. Powder blends containing magnesium trisilicate hydrate (MTSH) or magnesium lluminum silicate (MAS) at various oil loading factors were mixed with MCC with and without various binders and compressed into tablets using a fixed loading force of approximately of 5 KN. Hardness profiles of these oil loaded tablets were then analyzed.</p><p><strong>Results: </strong>Powder compacts which contained MTSH with and without SMEDDS oil had shown relatively better compaction properties than MAS. Adding SMEDDS oil solution to either MTSH or MAS at ratios of 1:9 has relatively reduced tablets hardness by almost 2 or 4 folds, respectively.</p><p><strong>Conclusion: </strong>Progressive inclusion of increasing amounts of SMEDDS oil solution adsorbed unto the solid carrier has incurred a further reduction in the hardness of SMEDDS tablets. It appears that manufacturing of tablet SMEDDS can only be attainable for highly potent drugs as minimal amounts of oil solution added to the powder blends can adversely affect the mechanical strength of compressed tablet.</p>

In this study, a solubility enhancing technique, Self-emulsifying drug delivery system (SEDDS), was considered to be developed for Ibuprofen, a poorly soluble drug. Capmul PG 8 was used as a co-solvent. As surfactant, hydrophilic surfactant Cremophor EL was considered. A fixed amount of Ibuprofen was added with fixed amount of excipients. Capmul PG8 showed a good solubilizing capacity which dissolved 300 mg/ml of Ibuprofen. Cremophor EL also showed a good solubilizing capacity which dissolved 300 mg/ml of Ibuprofen. Ibuprofen is a poorly soluble drug which was used as experimental drug and pH 7.2 phosphate buffer was used as dissolution medium. The amount of drug was measured form the absorbance of UV spectrophotometer at 221 nm. A 3-level factorial design was carried out to optimize the formulation using design expert software trial version 8.0.3.1. Capmul PG8 and Cremophor EL were used as independent variables where percent drug release at 5, 15 and 45 minutes. The optimized formula contains 24.10 mg Capmul PG8 and 71.02 mg Cremophor EL which releases 27.78%, 44.6% and 74.24% ibuprofen at the mentioned time interval. The present study shows that the Capmul PG8 and Cremophor EL have effect the release profile of capsule Ibuprofen. It is found that it is possible to increase the release of Ibuprofen by using Capmul PG8 and Cremophor EL. DOI: http://dx.doi.org/10.3329/icpj.v1i6.10535 International Current Pharmaceutical Journal 2012, 1(6): 138-150