Antioxidant-rich Tamarindus indica L. leaf extract reduced high-fat diet-induced obesity in rat through modulation of gene expression

Clinical Phytoscience

International Journal of Phytomedicine and Phytotherapy

Table 2 In vitro antioxidant activities of the ethanolic extract of T. indica leaf

	Polyphenol content (mg GAE/g)	Flavonoid content (mg QE/g)	DPPH radical scavenging activity, IC₅₀ (μg/ml)	ABTS radical scavenging activity (mmole Trolox/g)	Ferric reducing activity (μmole/g)
T. indica leaf extract	287.20 ± 9.21	107.52 ± 11.12	26.54 ± 3.18^a	1.61 ± 0.12^a	593.06 ± 8.57^a
BHT	NA	NA	29.17 ± 2.34^a	1.79 ± 0.08^a	575.04 ± 9.35 ^a
Ascorbic acid	NA	NA	11.02 ± 0.82^b	5.07 ± 0.05^b	1293.32 ± 18.21^b
Quercetin	NA	NA	9.81 ± 0.61^b	4.27 ± 0.18^c	1375.87 ± 22.51^c

Polyhenol and flavonoid content and in vitro radical scavenging and antioxidant activities of the ethanolic extract of T. indica L. leaf. Data was analyzed by one way ANOVA followed by Newman-Keuls’s post-hoc test and expressed as mean ± SEM (n = 3). Values with different superscript letters within the same column are significantly different at p < 0.05. NA, not applicable