Identification of Potential Antioxidants from Leaves of Eucalyptus grandis PT Toba Pulp Lestari, Tbk.

: Eucalyptus plants are one type of essential oil that is fast growing and is also known as a plant that can survive in the dry season and has a deep root system. This essential oil is widely used in various fields, such as for pharmaceuticals, cosmetics and the food industry both as antioxidants and antibacterial. This study aims to identification of potential antioxidants and the main active compounds from leaves of Eucalyptus grandis PT. Toba Pulp Lestari, Tbk. Extraction was carried out using solvents, methanol, ethanol and dichloromethane. The antioxidant potential test was determined by the DPPH method (1,1 diphenyl picrylhydrazyl). The variation of sample volume 20; 30; 40; 50; 60 μL. Antioxidant activity with IC50 Eucalyptus grandis leaf extract was 5,349 μg / mL. Eucalyptus leaf extract is categorized as providing weak antioxidant activity. The main active compound found is Sineol. The peak area was observed at 52% at retention time 13.605. The other compounds obtained in this leaf were α pinene, β pinene, 1,3,7-Octatriene, 3-Ethylpentane, Paracymene, and terpinene.