Metformin hidroklorida merupakan terapi lini pertama pada diabetes melitus tipe 2 dengan efektivitas tinggi, namun sering menimbulkan efek samping gastrointestinal akibat penggunaanya dalam dosis yang berulang. Pengembangan sistem penghantaran obat berbasis beads melalui kombinasi polimer kitosan/κ-karagenan yang tertaut silang natrium tripolifosfat (NaTPP), diperlukan untuk menghasilkan kompleks polielektrolit yang stabil secara fisik dan mekanik guna mengontrol laju pelepasan metformin hidroklorida. Penelitian ini bertujuan untuk mengidentifikasi adanya interaksi gugus fungsi, menganalisis pengaruh variasi kitosan/κ-karagenan terhadap profil pelepasan metformin hidroklorida serta mengetahui model kinetika pelepasannya. Beads disiapkan dengan metode gelasi ionotropik, kemudian dilakukan evaluasi sifat pembengkakan, efisiensi penjerapan obat, karakterisasi gugus fungsi menggunakan spektroskopi Fourier Transform Infrared (FTIR), uji pelepasan in vitro, serta analisis kinetika pelepasan dengan spektrofotometer UV-Vis. Hasil penelitian menunjukkan bahwa peningkatan proporsi κ-karagenan meningkatkan profil pelepasan (8,32%) akibat adanya gugus sulfat karagenan yang bersifat hidrofilik, sehingga membuka pori internal matriks dan jalur difusi menjadi lebih mudah dilalui. Analisis FTIR memperlihatkan pergeseran bilangan gelombang yang mengindikasikan terbentuknya interaksi antara polimer dan metformin hidroklorida. Profil pelepasan metformin hidroklorida mengikuti model Korsmeyer-Peppas dengan mekanisme difusi Fickian (n < 0,5) di mana pelepasannya dikendalikan oleh proses difusi melalui matriks polimer.
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| Properti | Nilai Properti |
|---|---|
| Organisasi | Universitas Muhammadiyah Pekajangan Pekalongan |
| umpp.pekalongan@yahoo.com | |
| Alamat | Jl. Raya Pekajangan No. 1A Kedungwuni Pekalongan |
| Telepon | (0285) 7832294 |
| Tahun | 2026 |
| Kota | Pekalongan |
| Provinsi | Jawa Tengah |
| Negara | Indonesia |