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PREPARASI DAN KARAKTERISASI SOLID LIPID NANOPARTICLES ASAM USNAT DENGAN PEMBAWA KOMBINASI PHOSPHOLIPON 90G DAN CERA FLAVA
The use of usnic acid is still limited because it has low solubility, low bioavailability and lipophilic properties that make the ability of the usnic acid delivery system to penetrate the skin difficult to control. To overcome this problem, Solid Lipid Nanoparticles (SLN) were formulated which have a nanostructured lipid matrix so that they can provide more flexibility in modulating drug release. Preparation of SLN uses a combination of high-speed homogenization and ultrasonication. The SLN formula consisted of usnic acid, phospholipon 90G:cera flava (3:7), and tween 80 whose concentrations were varied to 0.3%; 0.6%, and 1%. The percentage of entrapment efficiency (%EE) becomes the parameter to determine the best formula where the %EE results in each formula are in succession 93%; 96% and 92% so that F2 with a concentration of Tween 80 0.6% became the best formula for further characterization of solubility, particle size, PI, zeta potential and stability tests. The resulting SLN particle size is 442.3 nm with a PI value of 0.282 and a zeta potential value of -15.2 mV. The stability test showed that SLN was stable in three storage conditions with release model following zero orde, activation energy 12,76 cal/mol, kinetic constant 0,11857 mg/days and shelf-life 40 days in storages condition 25oC/60%RH and in storage condition 5 oC 0,0826 mg/days in 58 days. The results of one-way ANOVA statistical analysis showed p value
Inventory Code | Barcode | Call Number | Location | Status |
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2207000845 | T68431 | T684312022 | Central Library (Referens) | Available but not for loan - Not for Loan |
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