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.
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Showing 1 to 20 of 125 for “"volatile compounds"”.
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Volatile Compounds in Vine Tea (Ampelopsis grossedentata)
… and sensory characteristics. In this study, volatile components of vine tea infusions were identified by headspace solid-phase micro-extraction (HS-SPME) and gas chromatography-mass spectrometry (GC-MS). Commercial vine teas samples were brewed with distilled water and Blacksburg (VA, USA) …
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Anti-Inflammatory Properties of Blackberry Phenolic and Volatile Compounds
… been linked to high concentrations of phenolic compounds, especially anthocyanins. However, the present study hypothesized that volatiles could contribute to the berries’ bioactive properties. Thus, the objectives of this research are to profile the phenolic and volatile composition of 16 …
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Synthesis, characterization, and reactivity of volatile compounds for materials applications
… X-ray crystal structures show that, in all three compounds, the triflate ligand and all three C=C double bonds of the triene are bound to the copper center, which adopts a distorted tetrahedral coordination geometry. Competitive binding studies in toluene show that free energy of the copper ctt …
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Identification of Volatile Compounds Produced by Brevibacterium Linens that Inhibit Molds
… of surface-ripened cheeses contain a variety of compounds, several of these compounds are inhibitory to mold growth in environments other than cheese. The purpose of research presented in this thesis was to evaluate volatile compounds produced by B. linens for antimycotic activity. A method was …
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Enantioselective Syntheses and Chemical Investigations of Plant-Derived Bioactive Volatile Compounds
… ofƒndelta, epsilon-unsaturated carbonyl compounds, hetero Pauson-Khand substrates, via [3,3]-sigmatropic rearrangements.
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Analysis of volatile compounds, proximate composition, and fatty acids in Pacific bluefin tuna (Thunnus orientalis)
… dorsal chu-toro, and wakaremi conducting volatile analysis, proximate analysis, and fatty acid analysis. The results from these analyses can then be used as a base standard for companies seeking to create alternatives versions of PBT. Samples analyzed in this study were cultured PBT …
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Identification of Volatile Compounds Contributing to the Aroma of Pennycress and Camelina Seeds and Protein Extracts
… Minimal knowledge is known about their inherent volatile compounds and how they change during processing to yield a food ingredient. One variety of both pennycress and camelina, bred by Dr. David Marks and affiliates at the University of Minnesota, were analyzed to identify volatile compounds …
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Effect of Training Systems on Viognier (Vitis vinifera L.) Grape and Wine Glycosides and Volatile Compounds
… for the effects on grape and wine glycosides and volatile compounds. Fruit was harvested at the same Brix each season, and differences in berry weights were not observed. VSP-trained vines had the lowest crop load and lowest light levels in the fruit zone. Seventeen volatile compounds were …
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Antioxidant, Antimicrobial, and Antibiofilm properties of Opuntia stricta and Vachellia erioloba, and chemical characterization of volatile compounds
… analysis. Moreover, the characterization of the volatile constituents was done for the seed extract of V. erioloba. Furthermore, chemical characterization of the volatile constituents of the extract was performed using gas chromatography-mass spectrometry (GC–MS). The radical scavenging assay …
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C6 and C9 volatile compounds in 223 cucumbers (cucumis sativus L.) In Genome-Wide Association Studies (GWAS)
Volatile profile analysis has been conducted on limited cucumber varieties. This research aimed to quantify C6 and C9 compounds in 223 GWAS cucumber varieties. A comprehensive analysis of volatiles was performed using solid-phase microextraction gas chromatography-mass spectrometry (SPME-GC-MS). …
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Advances in solid phase microextraction for the analysis of volatile compounds in explosives, tire treatments, and entomological specimens
… specimens. In the first project, the volatile organic compounds emanating from two brands of pseudo-explosive training aids for use in detector dog imprinting were determined by SPME-GC-MS, and the efficacy of these training materials was tested in live canine trials. In the second …
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Advances in Solid Phase Microextraction for the Analysis of Volatile Compounds in Explosives, Tire Treatments, and Entomological Specimens
… specimens. In the first project, the volatile organic compounds emanating from two brands of pseudo-explosive training aids for use in detector dog imprinting were determined by SPME-GC-MS, and the efficacy of these training materials was tested in live canine trials. In the second …
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Qualitative and Quantitative Evaluation of Volatile Compounds of Deep Frying Oil and French Fries: Static and Dynamic Headspace-Gas Chromatography-Mass Spectrometric Analysis
… in the removal of selected flavor significant compounds in French fries with respect to non filtered treatment was carried out. Quantitative analysis of selected volatile flavor compounds in French fries was achieved by using dynamic headspace-capillary GC-mass spectrometry. The total amount of …
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Profile of Missouri Norton wine aroma using solid phase microextraction of headspace, gas chromatography-olfactometry, mass spectrometry
… (GC/MS/O) in order to catalog common volatile compounds. Extraction of volatile compounds was performed using headspace solid-phase microextraction (HS-SPME) and identified by a trained panel. The samples were then diluted to determine the most important odor active compounds, …
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Characterization of Fava Bean Hydrolysates for Future Use in Protein Enriched Beverages
… in acidic beverages, and to identify key volatile compounds contributing to flavor. Protein hydrolysis was carried out at 50 °C for 40 minutes, with samples collected at 0, 20, and 40 minutes. Hydrolysis was monitored using sodium dodecyl sulfate–polyacrylamide gel electrophoresis …
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Modification of cheese flavour through the use of surface microbiota
… and lactate, with a consequent biosynthesis of volatile flavour compounds. The intense metabolic activity of the yeasts and Gram-positive bacteria on the cheese surface is evident in surface-ripened cheese, where the resident surface microbial population is responsible for the characteristic …
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Aplicación foliar en el viñedo de un extracto del alga Ascophyllum nodosum como herramienta para mejorar la composición nitrogenada, fenólica y aromática de la uva y del vino de las variedades Tempranillo y Tempranillo Blanco
… secondary metabolites, mainly of phenolic compounds in several crops and woody species, including grapevines. However, the studies about the effects of foliar applications of seaweeds to grapevines are mainly focused on their effects on plant physiology, productivity, physicochemical …
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Estimating Exposure and Uncertainty for Volatile Contaminants in Drinking Water
… to evaluate the risk associated with exposure to volatile compounds in drinking water. The model will be based on a computer program (developed previously by the EPA) for estimating the risks associated with exposure to radon in drinking water. The model will be re-implemented in the form of a …
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