Table 2.

Phenolic components in extract of seven oregano accession ± standard deviation (SD).

Phenolic components (mg/100 g dry weight)	Oregano populations
	Baneh	Ardabil	Arasbaran	Gilan	Namin	Kaleybar	Mazandaran	LSDa
Rosmarinic acid	659.6 ± 66.6	1646.9 ± 29.3	1484.2 ± 200.1	816.4 ± 104.1	1606.7 ± 120.0	1164.8 ± 28.6	967.7 ± 64.1	315.01
Chlorogenic acid	0.9 ± 0.4	0.8 ± 0.4	0.2 ± 0.1	1.1 ± 0.9	0.6 ± 0.3	0.9 ± 0.03	2.7 ± 0.1	1.61
Cinnamic acid	2.7 ± 1.9	1.8 ± 0.3	5.6 ± 1.8	7.1 ± 0.4	3.0 ± 1.0	10.8 ± 2.8	4.6 ± 0.4	4.41
Quercetin	106.0 ± 15.2	59.0 ± 3.7	10.6 ± 4.0	32.1 ± 16.5	22.9 ± 1.8	15.2 ± 1.3	40.6 ± 2.9	26.75
Caffeic acid	2.2 ± 0.3	1.2 ± 0.3	1.4 ± 0.2	0.4 ± 0.01	0.5 ± 0.1	2.2 ± 0.3	28.8 ± 2.7	3.92
Syringic acid	6.2 ± 1.0	8.0 ± 0.8	7.4 ± 0.7	6.8 ± 0.5	5.1 ± 2.1	7.4 ± 0.8	27.2 ± 0.6	7.3
Benzoic acid	10.9 ± 3.3	6.6 ± 0.7	11.6 ± 4.2	6.2 ± 0.9	5.9 ± 1.6	6.9 ± 0.8	23.3 ± 5.6	9.23
Vanillic acid	71.1 ± 7.8	81.3 ± 1.5	87.8 ± 5.0	71.2 ± 3.9	89.7 ± 3.1	81.7 ± 4.1	9.5 ± 1.7	13.22
Gallic acid	14.2 ± 3.7	35.4 ± 7.0	4.6 ± 2.2	8.0 ± 1.3	9.4 ± 2.9	5.8 ± 1.1	36.2 ± 4.4	11.52
Apigenin	9.2 ± 4.0	1.3 ± 0.2	2.2 ± 0.0	1.7 ± 0.3	1.6 ± 0.3	1.6 ± 0.2	1.7 ± 0.36	4.65
Chicoric acid	36.3 ± 3.5	212.6 ± 12.3	43.3 ± 0.7	51.4 ± 2.3	108.0 ± 13.0	44.4 ± 7.6	58.7 ± 6.70	19.56
Luteolin	211.8 ± 33.8	311.3 ± 34.1	299.5 ± 46.9	46.5 ± 6.1	345.4 ± 56.1	293.2 ± 57.1	112.4 ± 23.8	146.12
Kaempferol	20.6 ± 6.2	0.5 ± 0.0	2.8 ± 0.3	8.6 ± 3.5	23.4 ± 10.1	89.8 ± 23.1	2.4 ± 1.2	87.65
2,4-Dihydroxybenzoic acid	4.9 ± 0.4	2.7 ± 0.4	4.2 ± 0.7	2.6 ± 0.2	3.2 ± 0.7	3.4 ± 0.7	7.4 ± 2.3	3.08
Naringenin	14.0 ± 1.2	10.7 ± 0.4	12.8 ± 0.5	10.3 ± 0.7	11.1 ± 0.4	10.4 ± 1.1	18.8 ± 3.8	4.80
Coumarin	65.7 ± 3.4	164.0 ± 1.2	121.3 ± 10.3	101.4 ± 2.1	193.9 ± 12.4	83.0 ± 8.9	122.9 ± 6.4	22.90

^aWithin each row means with the least significant difference (LSD test at 0.05 level) are not significantly different from each other.