Evaluation of the Antioxidant Activity of Syzygium cumini Leaves
2008; Multidisciplinary Digital Publishing Institute; Volume: 13; Issue: 10 Linguagem: Inglês
10.3390/molecules13102545
ISSN1433-1373
AutoresZhi Ping Ruan, Liang Liang Zhang, Yi Lin,
Tópico(s)Phytochemistry and Biological Activities
ResumoThe antioxidant activity of Syzygium cumini leaf extracts was investigated using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical-scavenging and ferric-reducing antioxidant power (FRAP) assays. The methanolic extract and its four water, ethyl acetate, chloroform, and n-hexane fractions were prepared and subjected to antioxidant evaluation. The results showed that the ethyl acetate fraction had stronger antioxidant activity than the other ones. HPLC data indicated that S. cumini leaf extracts contained phenolic compounds, such as ferulic acid and catechin, responsible for their antioxidant activity. A significant linear relationship between antioxidant potency, free radical-scavenging ability and the content of phenolic compounds of leaf extracts supported this observation.
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