Essential Oils Composition and Antioxidant Properties of Three Thymus Species

Table 3

Antioxidative capacities of the essential oils and methanol extracts of Thymus species𝑎.

Plant oils, methanol extracts,and controls	Test system
	DPPH IC50 (μg/mL)	β-Carotene/linoleic acid (% inhibition rate)
T. kotschyanus oil	278 ± 1.9	69.2 ± 0.5
T. daenensis subsp lancifolius oil	99.6 ± 0.5	88.4 ± 0.8
T. eriocalyx oil	198 ± 1.4	57.6 ± 0.6
T. kotschyanus polar sub-fraction	128 ± 0.9	61.2 ± 0.5
T. kotschyanus non-polar sub-fraction	526 ± 3.1	81.4 ± 0.6
T. daenensis subsp lancifolius polar sub-fraction	19.1 ± 0.1	50.2 ± 0.4
T. daenensis subsp lancifolius non-polar sub-fraction	248.7 ± 1.6	92.1 ± 1.1
T. eriocalyx polar sub-fraction	34.2 ± 0.4	67.9 ± 0.7
T. eriocalyx non-polar sub-fraction	426.2 ± 2.7	96.1 ± 0.8
BHT	18.2 ± 0.3	96.4 ± 0.9

^aResults are means of three different experiments.