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    PREPARASI DAN KARAKTERISASI SUBMIKRO PARTIKEL KITOSAN DAN NATRIUM ALGINAT SEBAGAI PEMBAWA CAPTOPRIL DENGAN VARIASI KITOSAN

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    Research has been carried out on submicroparticles of chitosan and sodium alginate as captopril carriers. This study aims to overcome the problem of permeability and improve the absorption of a macromolecular compound. Captopril preparation into submicroparticles with chitosan adsorption polymer, sodium alginate and CaCl2 crosslinking by ionic gelation method can improve the permeability problem of captopril. The concentration of chitosan which was varied against the three formulas was 0.1%; 0.2% and 0.3% resulted in the percent entrapment efficiency (EE) of 69.69% ± 0.292, 76.86% ± 0.535, and 79.26% ± 0.178, respectively. The results of the submicroparticle characterization of each formula such as diameter, particle distribution (PDI) and zeta potential using a particle size analyzer (PSA) were 232.0 nm; 0.259; -29.1 mV (F1), 333.8 nm; 0.290; +32.4 mV (F2), and 426.3 nm; 0.321; +55.6 mV (F3). The best captopril submicro particle formula was achieved in formula 3 (chitosan 0.3%). The polymer concentration has an important influence on the percent entrapment efficiency (EE), particle size, particle distribution, and the zeta potential of the captopril submicroparticles.Telah dilakukan penelitian mengenai submikro partikel kitosan dan natrium alginat sebagai pembawa kaptopril. Penelitian ini bertujuan untuk mengatasi permasalahan permeabilitas dan memperbaiki absorbsi suatu senyawa makromolekul. Preparasi kaptopril menjadi submikro pertikel dengan polimer penjerap kitosan, natrium alginat dan crosslinking CaCl2 dengan metode gelasi ionik dapat memperbaiki masalah permeabilitas kaptopril. Konsentrasi kitosan yang divariasikan terhadap formula F1, F2 dan F3 berturut-turut adalah 0,1%; 0,2% dan 0,3% menghasilkan persen entrapment efficiency (EE) masing-masing sebesar 69,69%; 76,86% dan 79,2%, distribusi partikel (PDI) dan zeta potensial yaitu 232,0 nm; 0,259; -29,1 mV (F1), 333,8 nm; 0,290; +32,4 mV (F2), dan 426,3 nm; 0,321; +55,6 mV (F3).  Formula submikro partikel dapat diperoleh pada formula 3 (kitosan 0,3%). Konsentrasi polimer mempunyai pengaruh penting terhadap persen entrapment efficiency (EE), ukuran pertikel, distribusi partikel, dan zeta potensial dari submikro partikel captopril
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