Penetapan Kandungan Fenolat Total Dan Uji Aktivitas Antioksidan Menggunakan Radikal Dpph Fraksi Etil Asetat Sari Buah Apel Beludru (Diospyros Blancoi a. Dc.)

Johannes Baptista Yunio Rahmawan • Yohanes Dwiatmaka

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(Bahasa Indonesia, 8 pages)


Antioxidant plays a role in inhibiting oxidation by binding to free radicals. As a result, the cell damage that leads to degenerative diseases can be inhibited. This research was conducted to determine the antioxidant activity and total phenolic content of ethyl acetate fraction of velvet aple (Diospyros blancoi A.DC.) juice. Previously known that other plants from genus Diospyros contain phenolic compounds such as quercetin. Antioxidant activity test performed qualitatively and quantitatively using radical of 1,1-diphenyl-2 pikrilhidrazil (DPPH) and expressed as the value Inhibition Concentration 50 (IC50). Determination of total phenolic using Folin-Ciocalteu method expressed as equivalent mass of gallic acid. Phenolic compounds will be oxidized by the Folin-Ciocalteu under alkaline conditions, forming a blue solution. The results showed that the ethyl acetate fraction of velvet apple juice has very strong antioxidant activity with IC50 of (30.0 ± 0.09) mg / mL. Total phenolic content of (393.5 ± 0.35) mg gallic acid equivalents per gram of ethyl acetate fraction.




Journal of Pharmaceutical Sciences and Community

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