Table 2.

Antioxidant activity of Turnera spp. reported as Antioxidant Capacity.

Method	Species	Part of the Plant	Extract/Compound	AC	Notes	Ref.
ABTS	T. diffusa var. aphrodisiaca	C	AQ	666.5	µmol ET/g	[17]
ABTS	T. diffusa var. diffusa	C	AQ	446.6	µmol ET/g	[17]
DPPH	T. diffusa	H	HA	145–377	mg Trolox/dry weight	[18]
NO	T. ulmifolia	H, R, F	HA	34.1	µM/mL nitrite formed	[25]
ORAC	T. diffusa	H, T	EO	813	µmol Trolox/g	[13]
FRAP	T. diffusa	H, T	AQ	18.5–21.3	mg GAE/g	[15]
FRAP	T. ulmifolia	H, R, F	HA	628.4	µM TE/g	[25]

Ref.: reference. H: leaf. C: whole plant. T: stem. R: root. F: flower. HA: hydroalcoholic. EO: essential oil. AQ: aqueous. AC: antioxidant capacity. ET: Trolox equivalents.