Rediscovering Medicinal Amazonian Aromatic Plants: Piper carpunya (Piperaceae) Essential Oil as Paradigmatic Study

Table 2

Antioxidant properties of P. carpunya EO evaluated by DPPH assay. The values, expressed as IC₅₀, were compared to thymol, piperitone, limonene, 1,8-cineole, methyleugenol and Trolox®.

	DPPH
Samples	(g/mL)	TEAC (mmol TE/g)
P. carpunya EO	159.80 ± 3.40	71.88 ± 1.53
piperitone	2278.00 ± 31.74	2.61 ± 0.32
limonene	>1000	<0.89
1,8-cineole	>1000	<2.05
methyleugenol	602.00±5.59	17.87±0.56
thymol	70.80 ± 1.51	160.02 ± 3.45
trolox	3.97 ± 0.40

¹ IC₅₀: concentration corresponding to the 50% of the bioactivity;
² TEAC: Trolox equivalent (TE) antioxidant capacity.