Evaluation of Antioxidant Potentials and α-Amylase Inhibition of Different Fractions of Labiatae Plants Extracts: As a Model of Antidiabetic Compounds Properties

Table 2

Antioxidant activities of Zataria multiflora and Otostegia persica extracts and their fractions.

Samples	DPPH radical scavenging; (IC50 μg/ml)	Reducing power; (concentrations with absorbance 0.5)
Ethanol extractof Zm	90.73 ± 2.9	4.15 ± 0.01
Petroleum ether fraction of Zm	883.26 ± 2.1	5.83 ± 0.2
Chloroform fraction of Zm	440.75 ± 3.0	11.36 ± 0.0
Ethyl acetate fraction of Zm	32.17 ± 1.8	3.05 ± 0.5
Butanol fraction of Zm	393.78 ± 1.5	7.57 ± 0.2
Ethanol extract of Op	166.09 ± 2.1	64.33 ± 1.1
Petroleum ether fraction of Op	1578.89 ± 4.2	248.57 ± 2.8
Chloroform fraction of Op	1139.5 ± 3.1	130.74 ± 2.3
Ethyl acetate fraction of Op	635.65 ± 3.6	38.66 ± 2.0
Butanol fraction of Op	691.32 ± 4.7	103.66 ± 1.5
Quercetin	26.28 ± 2.6	ND
Gallic acid	ND	2.75 ± 0.26

ND: nondetermined, Zm: Zataria multiflora, Op: Otostegia persica; statistical differences shown as alphabetic letters. The same alphabetic letters implied there are no statistical differences, , and different letters represented statistical differences, .