Antioxidant and Anticholinesterase Potential of Six Thymus Species

Table 5

Ferrous ion chelating capacities of Thymus ethanolic extracts.

Samples	Iron(II) chelating ability ± SD
	37.5 μg/mL	75 μg/mL	150 μg/mL	300 μg/mL	600 μg/mL
T. longicaulis	na	1.92 ± 0.03^a	15.13 ± 2.71^a	58.05 ± 2.17^a	77.30 ± 0.68^a,c
T. praecox subsp. polytrichus	na	na	1.30 ± 0.95^b	39.19 ± 0.48^b	75.72 ± 0.25^a,b
T. pulegioides	na	na	9.32 ± 3.06^a,c	57.34 ± 0.93^a	77.40 ± 1.07^a,c
T. serpyllum subsp. serpyllum	na	na	2.47 ± 0.44^b	46.04 ± 0.44^c	74.41 ± 1.89^b
T. striatus	na	na	3.07 ± 4.34^b,c	46.44 ± 0.42^c	78.61 ± 0.84^c
T. vulgaris	6.85 ± 3.07	19.61 ± 1.52^b	64.38 ± 1.47^d	92.71 ± 1.38^e	95.70 ± 0.03^d

na: no activity. Mean values in the same column followed by different letters are significantly different from each other ().