GC/MS Evaluation and In Vitro Antioxidant Activity of Essential Oil and Solvent Extracts of an Endemic Plant Used as Folk Remedy in Turkey: Phlomis bourgaei Boiss.

Table 5

Chelating effect (%) of the essential oil and the extracts from P. bourgaei at different concentrations^a.

Samples	Sample concentration (mg/mL)
	0.25	0.50	1.00
Essential oil	43.96±3.82	52.26±0.57	63.84±0.24
Hexane	22.01±0.19	30.96±2.91	38.42±0.01
Ethyl acetate	7.19±4.25	9.05±0.57	9.18±0.67
Methanol	2.40±0.14	7.93±1.00	48.04±0.53
Water	59.18±1.00	67.89±0.33	77.45±0.95
EDTA	99.36±0.05	—	—

aValues expressed are means ± S.D. of three parallel measurements.