Antioxidant Activity and Phenolic Content of Paederia foetida and Syzygium aqueum
Hasnah OsmanUniversiti Sains Malaysia, 11800 Gelugor, Pulau Pinang, MalaysiaAfidah A. RahimUniversiti Sains Malaysia, 11800 Gelugor, Pulau Pinang, MalaysiaNorhafizah M. IsaUniversiti Sains Malaysia, 11800 Gelugor, Pulau Pinang, MalaysiaNornaemah M. BakhirUniversiti Sains Malaysia, 11800 Gelugor, Pulau Pinang, Malaysia
2009en
ABI
Аннотация
The antioxidant activity of fresh and dried plant extracts of Paederia foetida and Syzygium aqueum were studied using beta-carotene bleaching and the 2,2'-azinobis(3-ethyl-benzothiazoline-6-sulfonic acid) (ABTS) radical cation assay. The percentage of antioxidant activity for all extract samples using both assays was between 58 and 80%. The fresh samples of both plants had higher antioxidant activity than the dried samples. The results of the beta-carotene bleaching assay were correlated (R(2) = 0.9849) with those of the ABTS assay.
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