ABSTRACT
Solid lipid nanoparticles (SLN) loaded with Bacoside were prepared by microemulsion probe sonicator method. Solid lipid nanoparticles (SLNs) have been proposed as suitable colloidal carriers for delivery of drugs with limited solubility. Bacoside as a model drug was incorporated into SLNs prepared from stearic acid using Tween 80 emulsifiers. SLNs in the rage of 33.3-257nm.with mean particle size of 56 nm was obtained. The characteristics of the SLNs with various lipid and surfactant composition were investigated. The mean particle size of drug loaded SLNs decreased upon mixing with Tween 80 as well as upon increasing total surfactant concentration. The zeta potential of these SLNs varied in the range of –25 to –26 (mV), suggesting the presence of similar interface properties. High drug entrapment efficiency of 74.1% revealed the ability of SLNs to incorporate a poorly water- soluble drug such as bacoside. In vitro drug release study showed upto 84.68% drug release from Solid lipid nanoparticles. The drug release from Solid lipid nanoparticles follows zero order kinetics of drug release.