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Abstract
"> Telah dilakukan penelitian tentang aktivitas antioksidan ekstrak kulit ari biji kopi (Coffea sp) berdasarkan tingkat kepolaran pelarut. Penelitian ini diawali dengan melakukan ekstraksi menggunakan pelarut metanol, selanjutnya dilakukan fraksinasi dengan pelarut nheksana, etil asetat dan n-butanol. Ekstrak hasil fraksinasi dengan n-heksana, etil asetat dan
n-butanol diuji aktivitas antioksidannya dengan metode DPPH. Hasil yang diperoleh untuk aktivitas antioksidan (IC50) pada ekstrak n-heksana, etil asetat, n-butanol dan vitamin C masing – masing adalah 1182,2 ppm, 823,52 ppm, 556,67 ppm dan 101,85 ppm.
n-butanol diuji aktivitas antioksidannya dengan metode DPPH. Hasil yang diperoleh untuk aktivitas antioksidan (IC50) pada ekstrak n-heksana, etil asetat, n-butanol dan vitamin C masing – masing adalah 1182,2 ppm, 823,52 ppm, 556,67 ppm dan 101,85 ppm.
Keywords
Kulit ari biji kopi
Ekstraksi
Fraksinasi
Antioksidan.
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