Table 2. Phytochemical contents and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging activity of Boesenbergia rotunda extract

Parameters	Values
Phytochemicals
Alkaloids (mg AE/g of extract)	77.63 ± 3.10
Flavonoids (mg QE/g of extract)	156.12 ± 0.48
Phenolics (mg GAE/g of extract)	543.86 ±1.17
Saponins (mg DE/g of extract)	478.42 ± 3.62
Tannins (mg TAE/g of extract)	23.17 ± 0.27
Steroids (mg DE/g of extract)	209.81 ± 2.80
DPPH radical scavenging activity (IC50)
B. rotunda extract (µg/mL)	268.89 ± 1.95
Ascorbic acid (µg/mL)	66.52 ± 0.32

Data presented as mean ± SEM.
n = 3 for each test.