Table 1.

Content of the main antioxidant constituents of Orthosiphon stamineus root, stem, and leaf. Data expressed as means ± SEM (n = 3)

Compound	Root (mg/g)	Stem (mg/g)	Leaf (mg/g)
Sinensetin	0.097 ± 0.002	0.103 ± 0.001	2.719 ± 0.001
Eupatorin	0.184 ± 0.002	0.285 ± 0.003	4.731 ± 0.005
3′‐hydroxy‐5,6,7,4′‐tetramethoxyflavone	0.018 ± 0.000	0.025 ± 0.001	0.425 ± 0.013
Rosmarinic acid	18.426 ± 0.007	8.201 ± 0.051	19.861 ± 0.008
Caffeic acid	0.410 ± 0.005	0.259 ± 0.005	0.425 ± 0.010
Ursolic acid	17.642 ± 0.003	10.507 ± 0.001	0.422 ± 0.006