One approach for the enhancement of oral drug bioavailability is the technique of nanoparticle preparation. Risedronate sodium (Biopharmaceutical Classification System Class III) was chosen as a model compound with high water solubility and low intestinal permeability. Eighteen samples of risedronate sodium were prepared by the solvent evaporation technique with sodium dodecyl sulfate, polysorb...

Karbon aktif merupakan salah satu material karbon yang murah, memiliki luas permukaan spesifik, porositas, dan nilai konduktivitas elektrik cukup tinggi. Hal ini membuat adanya beragam aplikasi sebagai adsorben, pengolahan air, juga dalam bidang energi. Studi dispersi memudahkan pengaplikasian dasar desain elektroda pada sel bahan bakar maupun baterai. Dalam penelitian ini, studi dilakukan sist...

Bitter gourd extract (Momordica charantia L) contains secondary metabolites such as flavonoids, alkaloids, and saponins that can be antibacterial against acne-causing bacteria (Propionibacterium acnes). Momordica L., could make into facial toner preparations to prevent the emergence worsen acne. It is formulated with various concentrations of polysorbate 20 performs stability testing. This stud...

Fresh first year roots from Dipsacus sylvestris HUDS. were extracted with 70% ethanol, ethyl acetate as well as dichloromethane. Extracts were solubilized in water (lipophilic extracts with addition of polysorbate 80) and tested for their activity against Borrelia burgdorferi sensu stricto in vitro during an eight-day period using amoxicillin as standard. The hydroethanolic extract showed no gr...

Many neoplasms have occurred in the respiratory tract of white Pekin ducks following one intratracheal injection of methylcholanthrene suspended in a 1.0 per cent aqueous solution of polysorbate 80. No tumors occurred when only polysorbate was injected. The histologic type of the tumors varied. Some were neurofibromas, and others were ganglioneuromas, hemangiomas, squamous cell-like carcinomas,...