AbstrakPatikala (Etlingera elatior (Jack) R.M.Sm) adalah tanaman dari keluarga Zingiberaceae. Patikala memiliki senyawa bioaktif adalah flavonoid yang berfungsi sebagai antioksidan. Tujuan dari penelitian ini adalah untuk mengukur aktivitas radikal bebas dalam ekstrak metanol bunga dan daun Patikala. Ekstraksi bunga dan daun sampel dengan metode maserasi menggunakan metanol. Analisis kualitatif senyawa kimia dengan eluen tertentu dengan menggunakan Kromatografi Lapis Tipis (KLT) untuk menentukan kelompok senyawa aktif dalam ekstrak. Uji aktivitas antioksidan menggunakan metode perendaman DPPH (1,1-Diphenyl-2-picryl Hidrazil) diukur serapan pada panjang gelombang 517 nm dan dibandingkan dengan kekuatan quersetin antioksidan. Hasil penelitian menunjukkan bahwa ekstrak metanol di 1,935% untuk bunga dan daun pada 5.17%. Aktivitas antioksidan ekstrak metanol bunga patikala memiliki aktivitas antioksidan yang rendah dengan nilai IC 50 101,84 mg / mL dan metanol ekstrak daun Patikala memiliki aktivitas antioksidan yang kuat dengan nilai IC 50 30,65 mg / mL. Potensi ini lebih rendah dari nilai IC 50 quercetin dari 5,35 mg / mL. AbstractPatikala (Etlingera elatior (Jack) R.M.Sm) is a plant of the Zingiberaceae family. Patikala (E. elatior (Jack) R.M.Sm) have bioactive compounds are flavonoids that act as antioxidants. The purpose of this study was to measure free radical activity in the methanol extract of the fruit and leaves Patikala (E. elatior (Jack) R.M.Sm). Extraction of flowers and leaf samples by maceration method using methanol. Qualitative analysis of chemical compounds with certain eluent using Thin Layer Chromatography (TLC) to determine the group of active compounds in the extract. Antioxidant activity assay using the immersion method of DPPH (1,1-Diphenyl-2-picryl Hidrazil) measured absorption at a wavelength of 517 nm and compared with the power of antioxidant quersetin. The results showed that the methanol extract rendemen is at 1.935% for flowers and leaves at 5.17%. Antioxidant activity of the methanol extract of the flowers patikala (E. elatior (Jack) R.M.Sm) have low antioxidant activity with the value IC 50 101.84 mg / mL and methanol extracts of leaves Patikala (E. elatior (Jack) R.MSm) have strong antioxidant activity with value IC 50 30,65 mg / mL. This potential is lower than that of quercetin IC 50 value of 5.35 mg / mL.
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