Chemical Composition of Essential Oils from Flower and Leaf of Korean Mint, Agastache rugosa

摘要

This study aims at the qualitative and quantitative analysis of the essential oils extracted from the leaf and flower of Agastache rugosa. GC-MS analysis confirmed the presence of 43 compounds in the essential oils, 34 of which were common both in the leaf and in the flower. Seven compounds 2,6-dimethylheptane, 4-methyl-1-pentene-3-ol, 5-limonene, trans-ocimene, octenyl acetate, anethole and 2-methyl-5-isopropenyl-2-cyclohexenone were present only in the flower, while p-damascenone and aIlyl-3-methyl-2-butanoate were present only in the leaf. The leaf and flower extracts of Agastache rugosa contained 36 and 41 compounds that constituted 90.93 and 82.3 % of the oils, respectively. Methylchavicol was the predominant component both in the leaf (84.25 %) and in the flower (57.94 %); the other major components in the flower were anethole, L-limonene and trans-caryophyllene, while those in the leaf were 2-phenyl propionaldehyde and trans-caryophyllene.