Journal
MOLECULES
Volume 13, Issue 10, Pages 2545-2556Publisher
MDPI
DOI: 10.3390/molecules13102545
Keywords
Syzygium cumini; Antioxidant activity; Free radicals; High performance liquid chromatography
Funding
- National Natural Science Foundation of China [30671646]
- Program for New Century Excellent Talents in University [NCET-07-0725]
- Program for Innovative Research Team in Science and Technology in Fujian Province University
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The 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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