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Showing 1 to 20 of 26 for “"geraniol"”.
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Control of Shigella sonnei and adhesive invasive Escherichia coli infections with a natural product which inhibits the bacterial oxidoreductase DsbA
… to control Shigella growth inside host cells. Geraniol is another natural product which has a chemical structure similar to the side chain of propolin D, which possesses properties potentially useful for antimicrobial therapy. qPCR analysis revealed that propolin D caused extensive bacterial …
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Óleo essencial de citronela : avaliação do seu potencial como repelente veiculado em uma loção cremosa
… sua composição óleo essencial com alto teor de geraniol e citronelal. Foi avaliado o potencial de repelência de dois cremes à base de citronela, e a composição química dos óleos essenciais da citronela (Cymbopogon winterianus). O potencial de repelência das duas amostras de creme foi avaliada …
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Phenotypic characterisation of wild type and mutant strains of adherent invasive Escherichia coli and Shigella, in vitro, ex vivo and in vivo models
… using simple compounds such as the monoterpene, geraniol, which can inhibit the activity of bacteria rather than eradicate them.;This study employed a red lambda system to construct mutants of key virulence genes, such as dsbA, yadA, proQ, icsA and mxiD genes, in AIEC and Shigella. Murine cell …
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Thymus pulegioides chemotipai Lietuvoje: paplitimas, edafinių ir klimatinių salygų įtaka, alelopatinės savybės /
… of these individuals. The individuals of geraniol chemotype of T. pulegioides are rarer in Lithuania, these individuals dominate in Venta climatic sub-district; distribution of the individuals of this chemotype may be stimulated by higher amount of natrium in the soil and higher …
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Avaliação da atividade antifúngica de fitoconstituintes contra candida albicans
… of the phytochemical components citral and geraniol on strains of Candida albicans . The tests rea lised whe re: the phytochemical’s effect on the kinetic of the C. albicans growth and the activity of the composts on its micromorphology. Regarding to the kinetics of the fungal growth, a …
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Oxo-metal catalysed reactions of unsaturated alcohols
… reported in the literature, epoxidation of geraniol and related compounds in the presence of these catalysts showed regioselectivity with exclusive reaction of the allylic double bond. The latter complex was also found to give low asymmetric induction in epoxidations of geraniol. In addition …
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Studies on the Stereochemistry and Mechanism of Taxadiene Biosynthesis
… unavailable. Methoxy-substituted nor analogs of geraniol, farnesol, and geranylgeraniol were prepared by alkylation of carbanions generated from allylic ethers.
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The Stereochemistry and Mechanism of The Biosynthesis of Ent-Sandaracopimaradiene and Related Diterpenes
… from R. cummunis was investigated. (S)-Geranyl-geraniol-1-d was prepared by enzymatic reduction of geranyl-geranial-1-d with horse liver alcohol dehydrogenase and NAD('+) with ethanol as a proton source. Inspection of the vinyl region of the ('1)H NMR spectrum of sandaracopimaradiene …
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Flavor chemistry of lemon-lime carbonated beverages
… borneol, isoborneol, neral, geranial, nerol, geraniol and p-cresol. Benzoic acid was quantified separately by HPLC using an external standardization method. Concentrations of the all compounds, except neral, differed between at least two brands. Concentrations of 1,8-cineole, octanal, nonanal, …
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Synthesis of Chiral Vanadium Phosphonates and Their Catalytic Activity
… activity in the asymmetric epoxidation of geraniol and cinnamyl alcohol.
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Attempted Synthesis of a Photoreactive Geranylcysteine Derivative.
… were carried out. The hydroxyl group of geraniol was protected with DHP/PPTs to generate <b>1</b> (98.1%). Allylic oxidation of <b>1</b> by using TBHP/SeO2 yielded <b>2</b> (31.5%). A modified oxidation increased the yield of <b>2</b> (34.4%). Treatment of <b>2</b> with BTC/pyridine …
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Investigations of Bicyclo(3.1.1)heptane Terpenes in Higher Plants: Stereochemistry of Pinene Biosynthesis and Isolation of Bergamoten-12-Oic Acids
… GPP was synthesized in ten steps from geraniol and incubated with each cyclase to afford (+)- ($\sp3$H) -$\alpha$-pinene, ($-$)- ($\sp3$H) -$\alpha$-pinene, and ($-$)- ($\sp3$H) $\beta$-pinene. A 10-step reaction sequence, which involved oxidative conversion of the endo methyl group of …
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Oxidação de álcoois terpênicos por oxigênio molecular catalisada por Pd(OAc)2 na presença de bases nitrogenadas e carbonatos
… dos substratos estudados, β-citronelol e geraniol, com conversão e seletividade para aldeídos maiores que 90%. Este sistema mostrou-se mais efetivo que sistemas descritos na literatura, também avaliados aqui, como Pd(OAc)2/piridina/MS3A/tolueno/O2. Foi também realizado um estudo cinético …
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The use of mineral oil as a trapping agent for volatiles produced by Ceratocystis moniliformis (Hedg.)
… B -myrcene, acetophenone, i1-octanol, and geraniol was studied using GC analysis. In an attempt to increase the production of these compounds relative to the production level of aroma-bearing compounds obtained by traditional incubation methods, mineral oil was added to the growth medium as …
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Untersuchungen zur Bindung kontaktallergener Substanzen an nukleophile Aminosäureseitenketten
… wenig untersuchten kontaktallergenen Duftstoffe Geraniol, 7-Hydroxycitronellal, Benzaldehyd, Salicylaldehyd, Vanillin, Zimtaldehyd, a-Amyl-zimtaldehyd und Benzylcinnamat hinsichtlich ihrer Reaktivität gegenüber peptidgebundenen Aminosäuren untersucht. Verwendet werden für diese Modellversuche …
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Nuevas reacciones de ciclación catiónica y su aplicación en síntesis biomimética
… de 7 pasos a partir de un dienino que deriva del geraniol. Los dos enantiómeros del 9-epi-Ambrox también se pueden obtener a través de una resolución cinética enzimática de un alcohol intermedio de la síntesis. Así, tras una doble resolución cinética enzimática se obtiene el (−)-9-epi-Ambrox con …
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Behavioral Responses of Diabroticite Beetles to Selected Olfactory and Visual Cues (Coleoptera: Chrysomelidae)
… geranyl acetone, alpha-terpineol, linalool, geraniol) attracted corn rootworms before and after silking, but were ineffective during the period of silking. Indole strongly synergized beta-ionone for D. v. virgifera and geranyl acetone for D. barberi at ratios ranging from 100:1 to 1:1 …
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Estudio analítico de compuestos volátiles en vino: caracterización quimiométrica de distintas denominaciones de origen
… phenyl ethyl acetate (AFE), hexanoic acid (AH), geraniol (G), phenyl ethyl alcohol (2FE), octanoic acid (AO), decanoic acid (AD). This method was allowed to determine the VOCs identified in the wine samples providing good sensitivity and reproducibility. These compounds selected were identified …
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Investigations on the Behaviour and Properties of Different Types of Unilamellar Vesicles
… and was low viscous. Addition of octanol and geraniol as co-surfactants continuously lowered the mean spontaneous curvature on micellar interface, since they have a small head group area which increases the packing parameter. The systems undergo a phase transition with increasing the …
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Flavor Chemistry of Regional Hops (Humulus lupulus L.) and Novel Aroma Application of Hop-derived Products
… in all fresh and dried hops, respectively. Geraniol, β-myrcene, linalool, methyl octanoate and trans-α-bergamotene were found to be the predominant compounds. Aroma profiles varied significantly with growing locations for both varieties. Individual aroma contents and total essential oil were …
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