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Chemical composition of essential oil and hydrolat of Geum iranicum
Geum iranicum is an endemic plant of the genus Geum (Rosaceae) that has 5 species in Iran . Some species of Geum such as G. urbanum, G. rivale and G. japonicum are used as medicinal plants in folk medicines . In Iranian folk remedy, infusion of the aerial part of G. iranicum is employed for diarrhea and other gastrointestinal disorders. The decoction of the whole plant is mixed with wheat flour and used as poultice for frostbite . The essential oils and hydrolats of the aerial part and root of G. iranicum grown at Shirvan, in the northeast of Iran, were obtained by hydrodistillation and analyzed by GC and GC/MS. The essential oil and hydrolat of the root were characterized by a high amount of eugenol (83.9%, 65.4%) and myrtenol (2.3%, 9.9%) respectively, whereas the essential oil of the aerial part of the plant had tridecanal (5.9%) and tricosane (3.9%) as characteristic constituents. Eugenol (45.7%) and linalool (7.3%) were identified as major components in the hydrolat of the aerial part of Geum iranicum.
References: 1. Mozaffarian, V. (1996) A Dictionary of Iranian Plant Names. Farhang Moaser, Tehran, Iran.
2. Vollmann, C. (1995) Flavour Fragr J. 10:173–178.
3. Abutorabi, H. (2001) D. Pharm. dissertation No.4247, Faculty of Pharmacy, Tehran University of Medical Sciences, Iran.