TY - JOUR T1 - The Ability Free Radical Binding of Dengen’s Stem Bark Extract (Dillenia serrata) From Luwu District Indonesia JF - Pharmacognosy Journal Y1 - 2020 A1 - Santi Sinala A1 - Ismail Ibrahim A1 - Alfrida Monica Salasa KW - Dengen KW - Ethanol Bark Extract KW - Free Radicals KW - IC50 AB -

Degenerative diseases such as cancer, heart disease is one of the diseases caused by free radicals. Dengen (Dillenia serrata) is one of Indonesia's endemic local plants that has the potential to bind free radicals. So far, only limited to the use of fruit and consumed directly. This study aims to determine the ability of dengen stem bark extract to bind to free radicals expressed in IC50. In the initial research, the total content of polyphenols in dengen stem bark extract was 444.8 mg GAE / g or 44.48%. Dengen stem bark is extracted by maceration using 70% ethanol solvent. Antioxidant activity was calculated based on IC50 (Inhibition Concentration) values using the DPPH method, and measured at a wavelength of 516 nm. Ethanol extract of dengen bark is made in 5 concentration series, namely 10 ppm, 20 ppm, 30 ppm, 40 ppm and 50 ppm. Ethanol extract of dengen bark has a very active antioxidant activity with an IC50 value of 48.33 ppm. Whereas for comparison vitamin C has an IC50 value of 15.448 ppm. From the results, it can be concluded that the ethanol extract of dengen bark has the ability to bind free radicals with IC50 48.33 ppm

VL - 12 IS - 6 ER -