Identification and Analysis of Potential Antioxidants from Leaves of Eucalyptus robusta PT. Toba Pulp Lestari, Tbk.

PT Toba Pulp Lestari Tbk is a global pulp producing company that develops forest industry concessions and stores a variety of underutilized biodiversity such as Eucalyptus robusta leaves which are widely found around the PT Toba Pulp Lestari Tbk forest area. Eucalyptus robusta leaves produce oil that is used as liniment, cough medicine, perfume, soap, detergent, disinfectant and pesticides. Eucalyptus robusta and supports its antioxidant potential. Eucalyptus leaves are first described with several solvents, such as methanol, ethanol and dichloromethane. The potential of antioxidants using the DPPH method on the 1800 Uv-Vis Spectrometer. The antioxidant activity test was carried out with the DPPH method (1.1 diphenyl pikrilhidrazil) with a variation of sample volume 20; 30; 40; 50; 60 μL. Eucalyptus leaf extract showed antioxidant activity with IC50 of 8,386 μg / mL. The Eucalyptus leaf extract is categorized as providing weak antioxidant activity. Analysis of active composition that can be used in eucalyptus leaves using the GCMS method. The main compounds contained were cineol 52%.