Assessment of the Antioxidant and Reactive Oxygen Species Scavenging Activity of Methanolic Extract of Caesalpinia crista Leaf
Table 1
Reactive oxygen species scavenging and iron chelating activity (IC50 values) of C. crista and reference compounds.
Activity
Extract/reference
Hydroxyl radical (OH•) scavenging
Caesalpinia crista
0.44 ± 0.1 (6)
Mannitol
0.85 ± 0.02 (6)***
Superoxide anion () scavenging
Caesalpinia crista
24.9 ± 0.98 (6)
Quercetin
47.38 ± 0.68 (6)***
Nitric oxide radical (NO) scavenging
Caesalpinia crista
33.72 ± 0.85 (6)
Curcumin
97.12 ± 3.09 (6)***
Singlet oxygen (1O2) scavenging
Caesalpinia crista
61.13 ± 3.24 (6)
Lipoic acid
49.48 ± 8.56 (6)**
Hypochlorous acid (HOCl) scavenging
Caesalpinia crista
170.51 ± 4.68 (6)
Ascorbic acid
198.42 ± 10.71 (6)**
Iron chelating activity
Caesalpinia crista
279.85 ± 4.72 (6)
EDTA
1.27 ± 0.05 (6)***
of IC50 values of all activities is g/mL, except OH• scavenging where unit is mg/mL. Data are expressed as mean ± SD. Data in parentheses indicate number of independent assays. EDTA represents ethylenediamine tetraacetic acid.
**
P .01; *** versus C. crista.