Tab. I.

The main components of propolis from Düzce, Turkey

Component	Percentage
Alcohols:
2-Naphthalenemethanol, decahydro- alpha.,.alpha.,4a-trimethyl-8-methylene-, [2R-(2.alpha.,4a.alpha.,8a.beta.)]-	1.47
α-Bisabolol	0.23
2-Propen-1-ol,3-phenyl-	2.05
2-Methoxy-4-vinylphenol	2.05
Benzyl alcohol	0.34
Phenylethyl alcohol	0.32
2-Phenanthrenol, 4b,5,6,7,8,8a,9,10-octahydro-4b,8,8-trimethyl-1-(1-methylethyl)-, (4bS-trans)-	0.77
Aldehydes:
Vanillin	0.41
Aliphatic acids and their esters:
2-Propenoic acid, 3-phenyl-, phenylmethyl ester	0.29
6-Octadecenoic acid	1.24
9-Octadecenoic acid, ethyl ester	1.35
Tetradecanoic acid, ethyl ester	0.25
Hexadecanoic acid, ethyl ester	0.39
2-Propenoic acid, 3-(4-hydroxy-3-methoxyphenyl)-	1.61
Dodecanoic acid, ethyl ester	0.41
n-Hexadecanoic acid	0.31
Carboxylic acids and their esters:
1-Phenanthrenecarboxylic acid, 1,2,3,4,4a,9,10,10a-octahydro-1,4a-dimethyl-7-(1-methylethyl)-, [1R-(1.alpha.,4a.beta.,10a.alpha.)]-	0.42
Benzoic acid	1.22
1,2-Benzenedicarboxylic acid, mono(2-ethylhexyl)ester	22.50
Cinnamic acids and their esters:
Benzyl benzoate	0.49
p-Hydroxycinnamic acid, ethyl ester	0.31
Trans-cinnamic acid	0.74
2,4-Dimethoxycinnamic acid	0.86
Flavonoids:
2-Propen-1-one, 1-(2,6-dihydroxy-4-methoxyphenyl)-3-phenyl-	4.82
4H-1-Benzopyran-4-one, 2,3-dihydro-5,7-dihydroxy-2-phenyl(Pinocembrin)	16.08
4H-1-Benzopyran-4-one, 5-hydroxy-7-methoxy-2-phenyl	1.26
4H-1-Benzopyran-4-one, 3,5,7-trihydroxy-2-phenyl	2.54
4H-1-Benzopyran-4-one,5-hydroxy-2-4 (4-hydroxyphenyl)-6,7-dimethoxy	1.28
Chrysin	6.94
Others:
Naphthalene, hexahydro-1,6-dimethyl-4- (1-methylethyl)-, [1S-(1.alpha.)]-	0.34
2-Naphthalenecarboxylic acid, 3,4-dihydro	2.51