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    PREPARASI DAN KARAKTERISASI CROSSLINKER KALSIUM ALGINAT SEBAGAI PEMBAWA DEKSAMETASON NATRIUM FOSFAT MENGGUNAKAN TEKNIK LOW ENERGY DAN HIGH ENERGY

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    Date
    2018-04-03
    Author
    Multi Tri Wardani, 14613181
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    Abstract
    Penggunaan alginat, polimer alami yang biokompatibel dan biodegradabel telah banyak digunakan sebagai pembawa molekul obat menggunakan metode gelasi ionik (crosslinking). Salah satu faktor yang harus diperhatikan dalam sintesisnya adalah efek mekanik. Tujuan penelitian ini adalah menjelaskan proses preparasi dan karakteristik dari crosslinker kalsium alginat pembawa deksametason natrium fosfat dengan teknik low energy dan high energy. Nanosuspensi dibuat dalam enam formula menggunakan 3 teknik, yaitu low energy (aerasi), high energy (ultrasonikasi), dan kombinasi low dan high energy (aerasi dan ultrasonikasi) dengan konsentrasi deksametason natrium fosfat dan natrium alginat yang tetap, yaitu 0,2% dan 0,1%, serta dengan konsentrasi kalsium klorida 0,02% dan 0,2%. Penentuan ukuran partikel, zeta potensial dan morfologi dari nanopartikel menggunakan Particle Size Analyzer (PSA) dan Scanning Electron Microscope (SEM), Transmission Electron Microscope (TEM). Adapun penetapan nilai efisiensi enkapsulasi menggunakan spektrofotometer UV/Vis dan analisis statistika hasil nanosuspensi menggunakan uji MANOVA. Sintesis nanosuspensi menggunakan teknik kombinasi low dan high energy (aerasi dan ultrasonikasi) menghasilkan karakteristik paling optimal dengan nilai ukuran partikel 352,90 ± 6,10 nm, indeks polidispersitas terhomogen (0,52 ± 0,04), zeta potensial optimal -44,40 ± 0,4 mV, efisiensi enkapsulasi 49,5-74,8% dan bentuk partikel yang sferis. The uses of alginate, biocompatible and biodegradable natural polymers have been widely used as drug molecular carriers using ionic gelation methods (crosslinking). One of the factors that must be taken into account in preparation of it is a mechanical effect. The purpose of this study was to explain the preparation process and the characteristics of the calcium alginate crosslinkers as dexamethasone sodium phosphate carriers with low energy and high energy techniques. Nanosuspension is made in six formulas using 3 techniques: low energy (aeration), high energy (ultrasonication), low and high energy (aeration and ultrasonication) with a fixed concentration of dexamethasone sodium phosphate and sodium alginate, that is 0,2% and 0,1%, with 0,02% and 0,2% of calcium chloride. Determination of particle size, zeta potential, and morphology of nanoparticles using Particle Size Analyzer (PSA) and Scanning Electron Microscope (SEM), Transmission Electron Microscope (TEM). Determination of encapsulation efficiency using UV/Vis spectrophotometer and statistical analysis using MANOVA test. Synthesis of nanosuspension using a combination of low and high energy (aeration and ultrasonication) results in the most optimal characteristics with particle size value of 352.90 ± 6.10 nm, homogenized polydispersity index (0,52 ± 0,04), optimal potential zeta -44,40 ± 0,4 mV, the encapsulation efficiency of 49,5 - 74,8% and spherical particle shape.
    URI
    https://dspace.uii.ac.id/handle/123456789/6449
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    • Pharmacy [1895]

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