EVALUASI AKTIVITAS INHIBISI XANTIN OKSIDASE DAN KANDUNGAN SENYAWA POLIFENOL DARI EKSTRAK SAPPAN
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Abstract
Hiperurisemia adalah penyakit yang dicirikan dengan kadar asam urat tinggi dimana prevalensi penderita cenderung meningkat. Penelitian ini bertujuan untuk mempelajari aktivitas esktrak kayu sappan (Caesalpinia sappan L.) dalam menginhibisi enzim XO (xantin oksidase) secara in vitro dan penentuan kadar senyawa polifenol total yang terkandung di dalamnya. Ekstrak dibuat dengan cara maserasi serbuk kayu menggunakan pelarut etanol 70% pada suhu kamar. Kualitas ekstrak dievaluasi mengacu pada parameter karakterisasi ekstrak yang ditetapkan oleh BPOM. Aktivitas inhibisi XO ditetapkan dengan mengukur kadar asam urat yang terbentuk pada sistem xantin/XO in vitro. Kadar polifenol ekstrak diukur menggunakan pereaksi Folin-Ciocalteu secara spektrofotometri. Hasil analisis menyatakan bahwa kualitas ekstrak kental sappan memenuhi persyaratan yang ada. Pengujian inhibisi XO dengan pembanding positif allopurinol pada konsentrasi akhir ekstrak sebesar 100 µg/mL menunjukkan bahwa ekstrak mempunyai kekuatan menginhibisi XO sebesar 98% relatif terhadap pembanding positif allopurinol. Kadar senyawa polifenol total dalam ekstrak sappan sebesar 26% dari ekstrak kasar. Dari penelitian ini dapat disimpulkan bahwa ekstrak sappan mempunyai potensi untuk dikembangkan sebagai bahan untuk mengatasi hiperurisemia.
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