Essential Oils of Two Hypericum Species from Uzbekistan (original) (raw)
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Chemical Composition of the Essential Oils of Six Hypericum Species (Hypericaceae) from Iran
2012
The genus Hypericum is one of the most important medicinal plants that contain 17 species in Iran, three of them are endemics. This paper reports the essential oil composition of six Hypericum species from Iran. The essential oil analysis of a number of the studied plants has already been reported but their report from Iran may be valuable for scientists. Samples collected between June and August 2007. The composition of the essential oils from Hypericum was investigated on flower and leaf. Essential oils were obtained by hydrodistillation method and then were analyzed by GC and GC/MS. Main components obtained in H. dogonbadanicum (endemic of Iran) on flower were phenyl ethyl octanoate(29.0%), terpin-4-ol (20.0%), and -phellandrene (12.9%), and on leaf were -pinene (54.3%), -pinene (12.0%) and p-cymene (11.0%), in H. helianthemoides on flower were -pinene (55.9%), Z-ocimene (8.7%) and -pinene (7.5%), and in H. hyssopifolium on flower were -pinene (49.5%), -pinene (12.9%) and n-tetradecan (5.2%) and on leaf were E-nerolidol (21.0%), n-tetradecane (15.8%) and -himachalene(13.3%), in H. lysimachioides on flower were -pinene (55.0%), Z--ocimene (30.7%) and n-tetradecane (2.7%), in H. perforatumon flower were E--farnesene (14.7%), n-hexadecanal (9.1%) and E-nerolidol (7.8%), and in H. triquetrifolium on flower were n-tetradecane (21.3%), -himachalene (14.2%) and -pinene (10.7%), and on leaf were -himachalen (27%), n-tetradecane (25.7%) and n-pentadecane (7.0%).
Essential Oil Composition of Eight Hypericum species (Hypericaceae) from Iran: Part II
Journal of Medicinal Plants and By-products, 2013
The genus Hypericum is one of the most important medicinal plants that contain 17 species in Iran, three of them are endemics. This paper reports the essential oil composition of eight Hypericum species from Iran. The essential oil analysis of a number of the studied plants has already been reported but their report from Iran may be valuable for scientists. Samples collected from different places between June and August 2010. The composition of the essential oils from Hypericum was investigated on the flower head. Essential oils were obtained by hydrodistillation method and analyzed by GC and GC/MS. The essential oil yield and composition in H. androsaemum L.: oil yields (0.17%) and major components were longifolene 19.2%, gurjunene 16%, and -gurjunene 8.4%, in H. apricum kar. \u0026 kir. oil yields (0.50%), and major components were cis-piperitol acetate 24.3%, p-cymenene 21% -pinene 8.3%; in H. armenum Jaub. \u0026 Spach oil yields (0.20%) and major components were -cadinene 30.6%, longifolene 10.4%, and E-nerolidol 7.4%; in H. asperulum Jaub. \u0026 Spach oil yields (0.05%), and major components were -muurolol 17.6%, cis-sesquisabienen hydrate 12.5%, and germacrene B 9.8%; in H. hirsutum L. oil yields (0.05%), and major components were germacrene B 29.2%, citronellyl propanoate 7.9%, and -gurjunene 7.5%; in H.linarioides Bosse oil yields (0.15%), and major components were (E, E)-farnesyl acetate 16.5%, cis-cadinene ether 12.7%, and 1-tridecene 5.7%; and in H. tetrapterum Fries oil yields (0.08%), and major components were trans-linalool oxide 22.3%, p-cymenene 6.2% and (E, E)-farnesyl acetate 6%, and in H. vermiculare Boiss. \u0026 Hausskn. oil yields (1.74%), and major components were -pinene 61%, myrcyne 6% and E--farnesene 5.3%.
Industrial Crops and Products, 2008
The essential oils obtained by hydrodistillation from the aerial parts of Tunisian native Hypericum perfoliatum L. (sect. Drosocarpium Spach.) and Hypericum tomentosum (sect. Adenosepalum Spach.) were analyzed by GC and GC-MS. Thirty-two compounds were identified in the essential oils of H. perfoliatum with ␣-pinene (13.1%), allo-aromadendrene (11.4%), germacrene-D (10.6%), n-octane (7.3%), ␣-selinene (6.5%) and -selinene (5.5%) as main constituents. Sixty-seven components were identified in the oil of H. tomentosum with menthone (17.0%), n-octane (9.9%), -caryophyllene (5.3%), ␣-pinene (5.2%), lauric acid (4.1%) and -pinene (3.7%) as the most abundant components. Both oils were characterized by the presence of many components which could have numerous applications in food, pharmaceutical and perfume industries.
Chemical Composition of the Essential Oil from Hypericum patulum Thunb. Cultivated in Iran
Journal of Essential Oil Bearing Plants, 2014
The leaf essential oil of Hypericum patulum Thunb. cultivated in Iran was extracted by hydrodistillation method and its components were identified using GC and GC-MS. Forty-six components, 82.2 % of total essential oil composition, were characterized. Monoterpene hydrocarbons (62.2 %) and sesquiterpene hydrocarbons (11.6 %) were identified as the main fractions of the essential oil together with small amount of diterpens (0.3 %). The most abundant constituents were β-pinene (30.2 %), α-pinene(18.3 %), limonene (8.4 %) and α-humulene (2.3 %).
Essential Oil Composition of Seven Bulgarian Hypericum Species and Its Potential as a Biopesticide
Plants
Hypericum species and especially H. perforatum L. are well known for their therapeutic applications. The present study assessed the essential oil (EO) composition, and antifungal and aphid suppression activity of seven Bulgarian Hypericum species. The EOs were analyzed by GC–MS–FID. Two experiments were conducted. In the first experiment, H. perforatum, H. maculatum, and H. hirsutum were used. Additionally, the EO composition of H. perforatum extracted via hydrodistillation (ClevA) and via commercial steam distillation (Com) were compared. The second experiment compared the EOs of H. perforatum, H. cerastoides, H. rumeliacum, H. montbretii, and H. calycinum (flowers and leaves) extracted via hydrodistillation and collected with n-hexane. Overall, the EO constituents belonged to four classes, namely alkanes, monoterpenes, sesquiterpenes, and fatty acids. The main class for compounds in H. maculatum and H. perforatum (section Hypericum) were sesquiterpenes for both experiments except ...
Essential oil composition of Hypericum triquetrifolium Turra. aerial parts
The Italian journal of biochemistry
The essential oil obtained by hydrodistillation from the aerial parts of Tunisian endemic Hypericum triquetrifolium Turra (Clusiaceae) was analyzed using GC and GC-MS. One hundred and nine compounds consisting of 92.2% of total detected constituents were identified. Sesquiterpene hydrocarbons were the main constituents (59.37%), Alpha-humulene, cis-calamenene, δ-cadinene, bicyclogermacrene, eremophilene, βcaryophyllene and (E)-γ-bisabolene were found as the main ones. Alpha-pinene (10.33%) was detected as the main monoterpene hydrocarbons (12.19%). The oxygenated sesquiterpenes constituted (9.33%); caryophyllene oxide (1.38%) was reported as the main constituent of this fraction. The oxygenated monoterpenes were weakly represented (4.62%) and consisted of constituents in low percentages (<1%).
Essential Oil Composition of Hypericum perforatum L. from Cultivated Source
Journal of Essential Oil Research, 2011
Hypericum perforatum L. (Hypericaceae) is the most commercially important species within the genus Hypericum. A wild strain was cultivated at Pothiwasa (2200 m), Uttarakhand, India. Aerial parts were collected (the upper two-thirds) during the flowering phenophase and used to extract the essential oil by means of a Clevenger-type apparatus. Forty compounds constituting 91.0% of the total volatile oil were identified using GC-FID and GC/MS analysis. The major constituent of the essential oil was germacrene D (22.1%), whereas other important constituents were found to be b-caryophyllene (11.3%), a-pinene (8.6%), a-cadinol (4.4%), b-pinene (3.8%), 2-methyl-octane (3.7%), terpinen-4-ol (3.3%), caryophyllene oxide (3.3%), a-muurolol (2.9%) and spathulenol (2.8%). The chemical composition of the oil varied qualitatively and quantitatively as compared to previous investigations. The peculiarity of the oil composition from the sample investigated in this paper may be attributed to environmental factors, such as soil nutrient status and growth environment, as well as to the genetic features of the cultivated strain.