. 2017 Sep 13;54(11):3491–3503. doi: 10.1007/s13197-017-2806-2

Table 7.

Antioxidant activity of Z. clinopodioides essential oils (mean ± SD)

	Ilam	Lorestan	Kermanshah	Kurdestan
DPPH radical-scavenging activity (IC₅₀; mg/ml)
Leaf	0.38 ± 0.17^b	0.33 ± 0.11^c	0.30 ± 0.04^d	0.54 ± 0.12^a
Flower	0.38 ± 0.11^b	0.32 ± 0.04^c	0.31 ± 0.09^c	0.56 ± 0.02^a
Stem	0.38 ± 0.01^b	0.34 ± 0.06^c	0.30 ± 0.01^d	0.55 ± 0.05^a
Ferric reducing power (EC₅₀; mg/ml)
Leaf	0.65 ± 0.01^b	0.54 ± 0.06^c	0.42 ± 0.02^d	0.89 ± 0.04^a
Flower	0.66 ± 0.06^b	0.55 ± 0.03^c	0.41 ± 0.02^d	0.90 ± 0.01^a
Stem	0.65 ± 0.17^b	0.55 ± 0.01^c	0.40 ± 0.02^d	0.91 ± 0.01^a
β-Carotene bleaching inhibition (EC₅₀; mg/ml)
Leaf	0.13 ± 0.00^b	0.11 ± 0.05^c	0.09 ± 0.01^d	0.23 ± 0.01^a
Flower	0.13 ± 0.01^b	0.12 ± 0.01^c	0.09 ± 0.01^d	0.21 ± 0.01^a
Stem	0.12 ± 0.01^b	0.11 ± 0.02^bc	0.10 ± 0.01^c	0.22 ± 0.01^a
Thiobarbituric acid (Meq of malondialdehyde/g)
Leaf	0.009 ± 0.031^b	0.006 ± 0.011^c	0.004 ± 0.000^d	0.01 ± 0.06^a
Flower	0.010 ± 0.001^a	0.006 ± 0.001^c	0.005 ± 0.001^c	0.01 ± 0.00^a
Stem	0.012 ± 0.002^b	0.006 ± 0.003^c	0.006 ± 0.000^c	0.01 ± 0.00^a

^a–d Means with different lowercase letters in the same row are significantly different (P < 0.05)