Pembentukan Sistem Dispersi Padat Amorf Azitromisin Dihidrat dengan Hikroksipropil Metilselulosa (HPMC)
| Main Authors: | Zaini, Erizal, Novitasari, Netty, Octavia, Maria Dona |
|---|---|
| Format: | Article info application/pdf eJournal |
| Bahasa: | ind |
| Terbitan: |
Fakultas Farmasi Universitas Andalas
, 2017
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| Subjects: | |
| Online Access: |
http://jsfk.ffarmasi.unand.ac.id/index.php/jsfk/article/view/140 http://jsfk.ffarmasi.unand.ac.id/index.php/jsfk/article/view/140/105 |
Daftar Isi:
- Tujuan penelitian ini untuk mengembangkan sistem dispersi padat azitromisin dihidrat dengan pembawa hidroksipropil metilselulosa E5 LV agar laju disolusi azitromisin dihidrat meningkat. Dispersi padat amorf dibuat dengan metode pelarutan pada perbandingan obat : polimer 1:1; 1:2 and 2:1. Sifat padatan dispersi padat amorf dievaluasi dengan analisa difraksi sinar-X, mikroskopik SEM dan spekroskopi FT-IR. Lebih lanjut, profil laju disolusi dilakukan dengan alat uji disolusi tipe II USP. Menurut analisa difraksi sinar-X, azitromisin dihidrat mengalami transformasi sebagian dari fase kristalin ke fase amorf, yang diindikasikan dengan penururan secara signifikan puncak-puncak difraksi pada difraktogram. Analisis spektroskopi FT-IR membuktikan tidak terjadi interaksi secara kimiawi antara obat dan pembawa. Laju disolusi azitromisin dihidrat dari sistem dispersi padat amorf lebih tinggi dibandingkan azitromisin dihidrat murni dan campuran fisika. Laju disolusi azitromisin dihidrat meningkat dengan peningkatan rasio obat : polimer.
- The aim of present study is to develop solid dispersion system of azithromycin dihydrate with hydroxypropyl methylcellulose E5 LV (HPMC) for improving the dissolution rate of azithromycin dihydrate. Amorphous solid dispersions were prepared by solvent method at 1:1; 1:2 and 2:1 (w/w) drug to polymer ratios. Solid state properties of amorphous solid dispersion were evaluated by X-ray powder diffraction (XRPD), scanning electron microscopy and spectroscopy FT-IR. Furthermore, the dissolution rate profile was investigated by type II USP dissolution apparatus. Based on X-ray powder diffractometry analysis, azithromycin dihydrate was transformed partially from the crystalline phase to the amorphous state as confirmed by significant reduction of the crystalline peaks intensity. FT-IR spectroscopy analysis revealed the absence of chemical interaction between azithromycin dihydrate and HPMC. The dissolution rate of azithromycin dihydrate from amorphous solid dispersion was substantially higher than azithromycin dihydrate intact and its physical mixture. The dissolution rate of azithromycin dihydrate increased with an increasing drug to polymer ratio.