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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 48 for “"Limonene"”.
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Stereochemistry, isotope effects, and inhibition of terpene biosynthesis: I. Stereospecificity and mechanism of monoterpene cyclases. II. Inhibition by heteroatom analogs of carbocation intermediates
… of the terminating deprotonation in limonene biosynthesis was elucidated by radiochemical degradation of ($\sp3$H) carvoximes. Limonene cyclases extracted from Citrus sinensis and Perilla frutescens effected regiospecific deprotonation, but pinene cyclases I and II from Salvia …
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Chiral Polymer Photodetector
… photodetectors that are made from R- and S-limonene induced achiral polymers are fabricated. A “hot spin-coating” process is introduced to cast uniform limonene induced polymer films. As a result of chirality transfer, Cotton effects are also observed in these photodetectors’ CD spectra. A …
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Using chemical catalysis to select and diversify biological-derived intermediates
… the overall route of p-cymene production via limonene and 1,8-cineole to demonstrate the strategy of integrating biological and chemical catalysis. Dehydrogenation of limonene and 1,8-cineole were conducted in a fixed-bed reactor at 250 oC. Hydrogenation metals such as Cu, Ni, Pd, and Pt also …
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Optimisation of small scale anaerobic digestion technology
… from 35 - 55 ⁰C were also investigated. Limonene is an inhibitory compound and a constituent of CFW, this was used as the inhibitor, a compartmentalized anaerobic reactor (CAR) was designed to improve HSAD while selected inocula from digested sewage sludge, compost and landfill leachate …
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Stability of aseptically packaged food as a function of oxidation initiated by a polymer contact surface
… and H20 condensation on the surface of LDPE. D-limonene was placed in 12ml sealed glass vials containing a sodium citrate buffer solution (pH=3.7), under atmospheric O₂ (21%) conditions. Oxidation of d-limonene, placed in intimate contact with untreated, HzOz treated, and ultraviolet (VV) light …
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Avaliação da estabilidade física de emulsões contendo limoneno
… that are finite , among these oils have limonene which features various activ ities among them gastroprotective function front of gastric ulcers induced by anti - inflammatory drugs nonsteroidal anti - inflamtórias and activities as well as antimicrobial, antifungal , antitumor and anti - …
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The Antioxidant Function of Lutein in Controlling Photo-Oxidation of a Colloidal Beverage System
… in sensory quality. Chemical analysis showed limonene concentration was significantly higher in the lutein-fortified beverage compared to the control beverage after light exposure (14 d, 4°C). Hexanal concentration, however, was not closely correlated with sensory differences. Results of the …
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Secondary organic aerosol formation of relevance to the marine boundary layer
… monoterpenes (alpha-pinene, beta-pinene, and d-limonene) and two aromatics (m-xylene and toluene), respectively. Results indicate that the oxidation of these monoterpenes and aromatics generates significant amounts of aerosol. The SOA yields of alpha-pinene, beta-pinene, and d-limonene obtained …
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Enhancing the Industrial Potential of Filamentous Cyanobacteria
… cycle analysis were conducted on a theoretical limonene production facility that used a genetically engineered filamentous cyanobacteria strain. The facility was not economically feasible at current limonene productivity rates, but would be feasible if productivity can be increased 56.7-fold. …
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Development of dry powder Inhaler and nebulised nanoparticles formulations of chrysin for the potential treatment of asthma. Development of dry powder inhaler of chrysin and nebulised nanoemulsion combination of chrysin and budesonide; Evaluating the anti-inflammatory activity of the combination formulation of chrysin and budesonide for asthma
… were prepared in two concentrations using limonene and oleic acid as the oil phase. In a comparison of low and high drug concentrations of the formulations, the FPF of the formulations prepared with limonene ranged from 45% to 53.3% and from 49.3% to 53.9% for chrysin and budesonide, …
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Environmentally Benign Extraction Processes in Analytical Separation of Essential Oils
… the major compounds identified by GC-MS were limonene (35.77%), trans-β-ocimene (27.41), camphor (11.57%), β-phellandrene (4.64%), β-pinene (4.13%), eucalyptol (2.20%), β-cis-ocimene (2.66%), camphene (1.96%), and artemiseole (1.61%). In <em>Rhus aromatic</em> (skunk brush) the main compounds …
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Otimização e avaliação do extrato hidroalcóolico de Schinus terebinthifolius Raddi obtido por ultrasom.
… oncentration of α - pinene (0.0225 mL / mL) and limonene (0.1475 mL / mL) in the alcohol content of 80% and 70% respectively. These extracts were evaluated by physical - chemical parameters of pH (4.85, 4.96, 5.36 and 5.79), dry (0.0546 g, 0.0653 g, 1.2074 g a nd 1.0501 g), density (0.9253, …
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Biochemical Separation of Geographical Strains of Plum Curculio, Conotrachelus nenuphar (Herbst) (Coleoptera: Curculionidae), and Evaluation of Olfactory Attractants in Virginia Orchards
… acid and unbaited control in traps baited with limonene, plum essence or ethyl isovalerate. In 2000, Circle traps baited with plum essence, sour cherry essence and grandisoic acid yielded no results. In 2001, branch mimic traps yielded no significant differences among three release rates of a …
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Understanding the formation of secondary organic aerosol and the fates of organic nitrates formed from monoterpene oxidation
… of monoterpenes (i.e., α-pinene, β-pinene, and limonene). First, the formation and properties of SOA formed from NO3 radical oxidation of α-pinene and limonene were studied. Oxidizing mixtures of monoterpenes simultaneously led to different formation and properties of SOA compared to oxidizing …
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Modeling secondary organic aerosol formation from biogenic hydrocarbons
… species---alpha-pinene, beta-pinene, and d-limonene. The updated CACM and MPMPO modules were calibrated by ozone formation and SOA yield data for alpha-pinene, beta-pinene, and d-limonene from chamber experiments. Then, the updated CACM and MPMPO were incorporated into the Community …
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The olfactory basis for attraction of the Bollworm helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae) to host-plant flowers
… (f)- linalool, phenylacetaldehyde and (+)-limonene gave significant increases in upwind flight approaches. Limonene (either (+)- or (-)-) was found to be important for the behavioural response despite having low EAG-activity. There was no significant difference in upwind flight response to …
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In SilIco-study for the evaluation of oNcoprotectivE activity by analisis by highly puRified alGal phycocYanin miRNAs regulation [In SilIco-studio per la valutazione dell'attività oncoprotettiva mediante analisi della regolazione dei miRNA di ficocianina algale altamente purificata]
… utilizzando solventi verdi (come acqua, limonene, p-cimene e 2-metiltetraidrofurano - 2-MeTHF), in combinazione con tecniche di estrazione assistita da microonde (MAE), per aumentare l’efficienza del solvente e ridurre il consumo energetico. Le frazioni estratte sono state caratterizzate …
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SPECIATION STUDIES FOR BIOGENIC VOLATILE ORGANIC COMPOUNDS AND SECONDARY ORGANIC AEROSOL GENERATED BY OZONOLYSIS OF VOLATILE ORGANIC COMPOUND MIXTURES
… results of the SOA generation by ozonolysis of limonene and VOC mixtures containing limonene. We use an additive approach for building a surrogate VOC mixture close in composition to a commercially-available mixture. The yield of PM as a function of VOC precursor mixture was measured with …
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Perillyl alcohol and perillic acid enhanced the sensitivity of head and neck cancer cells to radiation treatment in vitro
Limonene and perillyl alcohol are the naturally occurring monoterpenes found commonly in plant fruits and vegetables. Perillyl alcohol (POH) elicited anticarcinogenic effects in a number of cancer models and pharmacokinetic studies in humans revealed that perillic acid (PA) is the major circulating …
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Investigating the flavor of fresh calamondin peel and juice using instrumental and descriptive sensory analysis
… the juice. The dominant peel volatiles included limonene (10.53-27.85%), (Z)-3-hexenol (4.85-12.51%), linalool (9.40-10.29%), 1-octanol (2.55-2.84%), α-terpineol (4.00-7.80%), isopiperitenone (1.91%), geraniol (0.79-1.06%), 8-hydroxylinalool (1.20-2.12%), (E)-ρ- mentha-2,8-dien-1-ol (0.39-1.61%), …
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