Article

Inflorescence and leaves essential oil composition of hydroponically grown Osimum basilicum L.

Journal of the Serbian Chemical Society (Impact Factor: 0.91). 05/2010; 75(10):1361-1368.

ABSTRACT Abstract: In order to characterize the essential oils of leaves and inflorescences, water distilled volatile oils of hydroponically grown Ocimum basilicum L. were analyzed by GC/EI-MS. Fifty components were identified in the inflorescence and leaf essential oils of the basil plants, accounting for 98.8 and 99.9 % of the total quantified components respectively. Phenylpropanoids (37.7 % for the inflorescence vs. 58.3 % for the leaves) were the predominant class of oil cons- tituents, followed by sesquiterpenes (33.3 vs. 19.4 %) and monoterpenes (27.7
vs. 22.1 %). Of the monoterpenoid compounds, oxygenated monoterpenes (25.2 vs. 18.9 %) were the main subclass. Sesquiterpene hydrocarbons (25 vs. 15.9 %) were the main subclass of sesquiterpenoidal compounds. Methyl cha- vicol, a phenylpropane derivative, (37.2 vs. 56.7 %) was the principle com- ponent of both organ oils, with up to 38 and 57 % of the total identified components of the inflorescence and leaf essential oils, respectively. Linalool (21.1 vs. 13.1 %) was the second common major component followed by α- cadinol (6.1 vs. 3 %), germacrene D (6.1 vs. 2.7 %) and 1,8-cineole (2.4 vs. 3.5 %). There were significant quantitative but very small qualitative differences between the two oils. In total, considering the previous reports, it seems that essential oil composition of hydroponically grown O. basilicum L. had volatile constituents comparable with field grown counterparts, probably with potential applicability in the pharmaceutical and food industries.

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    ABSTRACT: Essential oils composition of hydroponically grown Ocimum basilicum L. plant was evaluated in response to salinity (control and 50 mM NaCl) and Zn foliar application (control, 100 and 200 mg l-1). Essential oil constituents were quantified and identified by GC/EI-MS. In total, fifty seven components were identified in the six treatment combinations. Methyl chavicol (43.9–61.2 %) and linalool (11.4-16%) were the major components of all treatments. Salinity had deteriorative effect on methyl chavicol biosynthesis and accumulation. In contrast, integrated levels of salinity and 200 mgl-1 Zn had increment effects on linalool content. Germacrene D (2.2-3.9 %), 1,8-cineole (2.4-3.8 %), (Z)-α-bergamotene (0.1-2.6 %), (E)-β farnesene (1.4-2.6 %), α-bulnesene (0.9-2.4 %), camphor (0.7-1.3 %) and (E)-β-ocimene (0.2-1.3 %) were the other main common constituents of oil. Considering the constant levels of zinc foliar application, salinity had raising effects on the contents of most above mentioned constituents. In conclusion, it seems that moderate salinity stress along with balanced levels of Zn foliar application changed the primary metabolites pathways in favor of major volatile oil components biosynthesis and that basil plant has the production potential under prevalent semi-saline conditions.
    Acta agriculturae Slovenica 12/2010; 97(2):93-98.

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