Identifying Antioxidant Activities of Guava Fruit Using DPPH Method

摘要

Antioxidant plays an important role in preventing degenerative diseases. One of fruits that has a potential antioxidant activity is guava. This research was aim to identify antioxidant activity of guava fruit. Potential antioxidant compounds in guava were extracted using sonicator, as a green extraction technique. DPPH (2,2-diphenyl-1-picrylhydrazyl) was used to determine antioxidant activity. Vitamin C was used as a reference standard. The result showed that ethyl acetate extract of guava fruit has a high antioxidant activity. The presence of flavonoids, steroids, and tannins in ethyl acetate extract were predicted as a potential antioxidant compounds.