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    Chemical Composition and Antifungal Activity of Lavender (Lavandula stoechas) Oil
    (NATURAL PRODUCTS INC, 2018) Özcan, Mehmet Musa; Starovic, Mira; Aleksic, Goran; Figueredo, Gilles; Al Juhaimi, Fahad; Chalchat, Jean-Claude
    The essential oil of Lavandula stoechas was examined by GC and GC-MS. Discs (5 mmi.d.) of the tested fungi (Alternaria alternata, Fusarium oxysporum and Botritys cinerea) were inoculated separately onto each assay plate and incubated at 25 degrees C for 7 days. The oil yield of dried parts (v/dw) obtained by hydro distillation was 2.9%. Thirty-two compounds representing 98.3% of the essential oil were determined. Linalool (49.9%), linalyl acetate (14.4%), lavandulyl acetate (5.7%), alpha-terpineol (5.6%), terpinene-4-ol (5.1%), lavandulol (3.7%), (E)-beta-ocimene (2.6%) and (Z)-beta-ocimene (2.4%) were identified as the main constituents of the oil. In addition, both doses of the lavender oil showed varying levels of inhibitory effects on the mycelial growth of tested fungi used in the experiment. The results demonstrated the strongest effect on B.cinerea, followed by A.alternata and F.oxysporum. The inhibitory effect is probably dependent on the concentration of essential oils.
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    Chemical composition and antifungal activity of rosemary (Rosmarinus officinalis L.) oil from Turkey
    (INFORMA HEALTHCARE, 2008) Özcan, Mehmet Musa; Chalchat, Jean-Claude
    The essential oil of the aerial parts of Rosmarinus officinalis collected from Konya, Turkey was analysed by gas chromatography and gas chromatography-mass spectrometry. The oil yield of dried plant (volume/dry weight) obtained by hydrodistillation was 1.9%. Twenty compounds representing 99.93% of the oils were identified. The main constituents of the oils were p-cymene (44.02%), linalool (20.5%), -terpinene (16.62%), thymol (1.81%), -pinene (3.61%), -pinene (2.83%) and eucalyptol (2.64%). The oil consisted of monoterpenic hydrocarbons, oxygenated monoterpenes and sesquiterpene hydrocarbons. Also, the inhibition effect of rosemary oil was investigated against Alternaria alternata, Botrytis cinerea and Fusarium oxysporum. The experiment was carried out in vitro using disc diffusion to investigate the antifungal action of the oil. Oil tested on potato dextrose agar plates exhibited an inhibitory effect. The extent of inhibition of fungal growth varied depending on the levels of essential oil used in experiment.
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    Comparative essential oil composition of flowers, leaves and stems of basil (Ocimum basilicum L.) used as herb
    (ELSEVIER SCI LTD, 2008) Chalchat, Jean-Claude; Oezcan, Mehmet Musa
    The chemical composition of flower, leaves and stems from basil (Ocimum basilicum L.) have been examined by GC and GC-MS. The identified components constituting 99.03%, 95.04% and 97.66% of the flower, leaves and stem oils, respectively. The main constituents of the essential oil of flower, leaves and stem oils, respectively, were estragole (58.26%, 52.60% and 15.91%) and limonene (19.41%, 13.64% and 2.40%) and p-cymene (0.38%, 2.32% and 2.40%). Dill apiole (50.07%) was identified as the highest main constituent for stem. Estragole (15.91%), apiole (9.48) and exo-fenchyle acetate (6.14%) followed in order to decreasing them. Minor qualitative and major quantitative variations for some compounds of essential oils were determined with respect to different parts of O. basilicum. It was reported that the chemical composition of different parts oils of basil are very variable. It is known that specific estragole chemotypes are also known. (c) 2008 Elsevier Ltd. All rights reserved.
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    A Comparative Investigation on the Composition of Rose (Rosa damascena Mill.) Oil Produced by Using Two Different Methods
    (TAYLOR & FRANCIS LTD, 2009) Chalchat, Jean-Claude; Özcan, Mehmet Musa
    The essential oil of petals of Rosa damascena Mill. from two different factories (a private factory and Gulbirlik factory in Isparta) in Turkey were analysed by a combination of GC and GC-MS. Thirty two components were identified, accounting for 97.4 % from sample A (Gulbirlik factory in Isparta). The major constituents of sample A were citronellol (48.0 %), geraniol (12.2 %), nonadecane (11.0 %), nonadecene (3.6 %), heneicosane (3.3 %) and methyl eugenol (2.8 %). The other components such as phenyl ethyl alcohol, geranyl acetate, linalool, geranial and farnesol were present in small amounts. 37 compounds were characterised, representing 93.4 % the R. damascena oil from Sample B (a private factory). The principal components detected in the oil of sample B were citronellol (43.0 %), geraniol (19.9 %), nonadecane (9.8 %), heneicosane (3.7 nonadecan-9-ene (3.1 %), farnesol (2.0 %), geranyl acetate (1.8 %) and methyl eugenol (1.9 The results show that it is need to harvesting to end-product storage and to establish for Standard composition and high quality oil.