Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 20 for “"citral"”.
-
Atividade sinérgica do citral em associação com antimicrobianos convencionais frente à Enterococcus faecalis multirresistentes
… foi avaliar a atividade antimicrobiana do citral, linalol e quatro antimicrobianos (ampicilina, gentamicina, linezolida e vancomicina) frente à dez cepas de Enterococcus faecalis cujo fenótipo de resistência fora previamente determinado pelo método de difusão em disco. Quatro cepas de …
-
Role of adsorption in catalysis: applications of NMR relaxometry
… study of liquid phase selective hydrogenation of citral on 5% Pt/SiO2. Infrared (IR) spectroscopy, volumetric adsorption isotherms, dynamic isotherms via a Tapered Element Oscillating Microbalance (TEOM), temperature programmed desorption (TPD) as well as 13C T1 NMR and 1H 2D T1-T2 relaxometry …
-
Avaliação da atividade antifúngica de fitoconstituintes contra candida albicans
… activity 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 …
-
Zein encapsulation of amphiphilic compounds
… generated in frying oils. Results showed that citral was effectively encapsulated with zein. Zein encapsulation morphology was related to the droplet formation ability of core materials in ethanol-water systems. Amphiphilic compounds were believed to form stable droplets in ethanol-water, which …
-
Effects of Nutrients and Minerals on Growth and Detoxification in Phytophagous Insects
… A ameliorates phototoxicity caused by ingesting citral, an insecticidal monoterpene. As an antioxidant, vitamin A may protect against UV-mediated citral damage by scavenging free radicals or quenching singlet oxygen. Vitamin C, a water-soluble antioxidant, had a negative impact on cytochrome …
-
In Vitro Study of an Orange Oil Derived Alternative to Antibiotics in the Treatment of Bovine Mastitis
… orange oil. Of four major compounds tested, only citral and linalool had significant inhibitory effects on S. aureus growth. In addition, they were capable of reducing pre-formed biofilms as well as association and invasion to bovine epithelial mammary cells. Part of this inhibition was due to …
-
The antimicrobial effect of orange, lemon and bergamot esential oils against Enterococcus sp
… oils and their components (limonene, linalool, citral, hersipidin and neoericitrin) and vapours at different temperatures and pHs were tested for their anti-microbial activity against vancomycin-sensitive Enterococcus faecium and Enterococcus faecalis. Lemon essential oil alone or blended and …
-
Development of Novel Anti-microbial Plant Essential-Oil Treatments to Reduce the Postharvest Incidence of Botrytis cinerea of Strawberries
… ethanol (495.5 ppm), methyl jasmonate (4.5 ppm), citral (30 ppm), linalool (30 ppm), and vanillin (30 ppm) was the most effective formula to reduce rot and increase shelf-life overall and strawberries treated with 600 ppm of this blend maintained acceptable organoleptic quality. Applying high …
-
Avaliação do tempo de residência no campo e da temperatura do ar de secagem sobre o teor e sobre a composição química do óleo essencial de erva-cidreira-brasileira (Lippia alba (Mill.) N. E. Brown)
… aumento significativo no teor relativo de citral nas folhas, em relação à planta fresca; as folhas podem ser secas com temperatura do ar de secagem de até 80 oC, sem prejuízos a qualidade do óleo essencial; o teor de óleo essencial extraído das folhas não foi influenciado pelo tempo de …
-
Use of sensory information by cerambycids and their natural enemies to locate resources and mates
… I tested this prediction by baiting traps with citral, a known attractant from the pheromone blend of M. caryae, or with citral and a dead adult beetle, which acted as a visual cue. More adults of M. caryae were captured on traps baited with both their pheromone and the visual cue, compared to …
-
Blending synthetic pheromones of cerambycid beetles to develop trap lures that simultaneously attract multiple species
… acetate, and citral. In some cases attraction was partially inhibited by the pheromone components of heterospecific species, whereas for N. acuminatus, attraction was completely inhibited when blends contained (2R*,3S*)-hexanediol, the racemic mixture of …
-
The synthesis of safranal
… in 1-3% yield by dehydrogenation of [beta]-cyclocitral. Karrer and Ochsner attempted its synthesis by bromination of [alpha]-cyclocitral with N-bromosuccinimide followed by dehydrobromination, but a rearrangement took place. Lunt and Sondheimer obtained a homolog of safranal, 4-methyl safranal, …
-
Synthesis and Characterization of Pt-Ru-Sn Catalysts
… catalytic activity for the hydrogenation of citral and crotonaldehyde. FTIR results indicate that the majority of the stabilizing ligands remain attached to the PtRu<sub>5</sub>(μ-SnPh<sub>2</sub>)(C)(CO)<sub>15</sub> cluster used following impregnation onto the MgO support. Under …
-
Coagulation and flocculation process using cassava peel starch modified with lemongrass extract for pollutants removal in raw water
… surface of the modified starch. The presence of citral, an important active group in lemongrass extract which responsible for antimicrobial property was also found in the modified starch. Coagulation and flocculation study indicated alum – MCPS and alum – CPS presented distinctive performance …
-
Polylactic acid/thermoplastic tapioca starch blend incorporated with selected essential oils for active food packaging
… parameters for PLA/TPTS blend production. Citral was found as the common active compound among the EOs. LG and LB were active against all the tested microorganisms, while PA was very mild at higher concentration. For active TPTS and PLA/TPTS films activity, E. coli: LB˃LG˃PA; B. cereus: …
-
Development and Evolution of the Skull-Neck Boundary: Insights from Amphibian Model Species
… retinoic acid and a retinoic acid inhibitor (citral) and described the resulting skull morphology. I provided evidence that homeotic transformations of skull-neck boundary structures could be induced via changing retinoic acid concentration in the developing embryo: first with the position of …
-
Circular chemistry through network science and optimisation on big data
… reaction pathway identification from β-pinene to citral within chemical big data. Pathways are modelled in circular interaction with the supply network based on material availabilities and demands and an exergetic description of each reaction pathway is presented. The methodological pipeline …
-
Investigating physiological and genetic characteristics of community acquired infections and potential antimicrobial interventions
… bergamot), and two components (limonene and citral) was investigated for the S. aureus isolates. Following exposure to lemongrass EO extensive disruption to S. aureus biofilms was shown under scanning electron microscopy. The most notable changes in gene expression following exposure to …
-
Anti-candida and Anti-virulence Activity of Essential Oils and Their Components
… essential oil components, namely eugenol and citral, against C. albicans. Despite many reports on the antimicrobial activities of essential oils, the results have been diverse and the evaluation methods inconsistent. At higher essential oil concentrations, reactive oxygen species were …
-
Desenvolvimento de hidrogel semissólido contendo óleo essencial de Cymbopogon citratus (DC.) Stapf carreado em nanopartículas poliméricas para o tratamento tópico da herpes
… análise qualitativa do óleo por CGAR-EM exibiu o citral como seu constituinte químico majoritário, correspondendo a 89,57 % da área relativa do cromatograma. Partículas em escala nanométrica e potencial zeta negativo foram obtidas, com um conteúdo de OECc de 58,59 ± 0,85 mg/g e eficiência de …