نتایج جستجو برای: monoterpene hydrocarbons
تعداد نتایج: 28132 فیلتر نتایج به سال:
The scent of roses (Rosa x hybrida) is composed of hundreds of volatile molecules. Monoterpenes represent up to 70% percent of the scent content in some cultivars, such as the Papa Meilland rose. Monoterpene biosynthesis in plants relies on plastid-localized terpene synthases. Combining transcriptomic and genetic approaches, we show that the Nudix hydrolase RhNUDX1, localized in the cytoplasm, ...
We previously isolated two putative monoterpene synthase genes, RlemTPS1 and RlemTPS2, from rough lemon (Citrus jambhiri) and showed that gene expression of RlemTPS2 was induced by microbial attack. The protein product of RlemTPS2 was obtained using a prokaryotic expression system, and GC and GC-MS of monoterpene synthesis by RlemTPS2 determined that RlemTPS2 encodes a sabinene synthase. Sabine...
A steam distilled volatile oil obtained from the leaves of Chrysanthemum indicum Linn. (FamilyCompositae) was analyzed by capillary GC and GC-MS. The volatile oil mainly comprises of thirty nine (39) components out of which thirty one (31) constituents comprising 82.6% of the oil were identified. The volatile oil mainly contains monoterpenes (48.1%). Isoborneol, a monoterpene, was the predomina...
ETHNOPHARMACOLOGICAL RELEVANCE Schinus molle L. has been used in folk medicine as antibacterial, antiviral, topical antiseptic, antifungal, antioxidant, anti-inflammatory, anti-tumoural as well as antispasmodic and analgesic; however, there are few studies of pharmacological and toxicological properties of Schinus molle essential oils. The aim of this study was to evaluate the antioxidant and a...
Plant-derived essential oils with monoterpenoids have been used as antifungal drugs since ancient times, but the mode of action of these natural hydrocarbons at the molecular level is not understood. In order to understand the mechanisms of toxicity of alpha-terpinene (a cyclic monoterpene), a culture of Saccharomyces cerevisiae was exposed to 0.02% alpha-terpinene for 2 h and transcript profil...
Perillyl derivatives are increasingly important due to their flavouring and antimicrobial properties as well as their potential as anticancer agents. These terpenoid species, which are present in limited amounts in plants, may be obtained via bioconversion of selected monoterpene hydrocarbons. In this study, seventeen yeast strains were screened for their ability to oxidize the exocyclic methyl...
We report the formation of aliphatic organosulfates (OSs) in secondary organic aerosol (SOA) from the photooxidation of C10–C12 alkanes. The results complement those from our laboratories reporting the formation of OSs and sulfonates from gas-phase oxidation of polycyclic aromatic hydrocarbons (PAHs). Both studies strongly support the formation of OSs from the gas-phase oxidation of anthropogen...
Introduction: The aim of this study was to characterize the chemical composition and antimicrobial activity of Trachyspermum copticum essential oil (EO). Methods: The chemical composition of seed samples obtained from Mianeh city in East Azerbaijan, was assessed using gas chromatography-mass spectrometry (GC-MS). The antimicrobial activity was evaluated by disc diffusion method against methicil...
A comparison of new measurements of total monoterpene flux with improved measurements of speciated monoterpene flux A. Lee, G. W. Schade, R. Holzinger, and A. H. Goldstein Department of Environmental Science, Policy, and Management, University of California, Berkeley, 151 Hilgard Hall # 3110, Berkeley, CA 94720-3110, USA Institute of Environmental Physics, University of Bremen, NW1, Otto-Hahn-A...
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