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 195 for “"phenolic compounds"”.
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The photocatalytic degradation of phenolic compounds
Semiconductor photocatalysis degrades phenolic pollutants to carbon dioxide and water, but the mechanisms of this potentially attractive method of environmental remediation remain unclear. This study aimed to elucidate the primary molecular events by HPLC analysis of the initial products of …
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Bioremediation of Phenolic Compounds in Circulating Packed Bed Bioreactor
Wastewaters containing phenolic compounds such as phenol and cresols pose a high risk to human health and natural environment. Compared to physicochemical methods, bioremediation is an attractive alternative for removal of phenolic compounds from contaminated waters. This research aimed to evaluate …
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A scheme for the identification of phenolic compounds and aldehydes
Thesis (M.A.)--Boston University
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Identification of Phenolic Compounds from Peanut Skin using HPLC-MSn
… to reduce spoilage in foods. In addition, these compounds have been reported to be responsible for human health benefits. Identification of these compounds in peanut skins may enhance consumer interest, improve sales, and increase the value of peanuts. This study evaluated analytical methods …
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Phenolic compounds from selected Namibian leafy vegetables (NLV); extraction and characterization
… Namibian Leafy Vegetables (NLV), using Total Phenolic Content (TPC), Total Flavonoid contents (TFC) as well as Diphenyl-1-picrylhydrazyl (DPPH), 2,2-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), and Reducing Power (RP) assays. The study also aimed at detecting and characterizing …
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Analysis of phenolic compounds by dint of GDH-biosensors and immunoassays
In den letzten Jahren gerieten phenolische Substanzen, wie z.B. Chlor-, Nitrophenol oder Alkylphenolethoxylate aufgrund ihrer Toxizität sowie ihres kanzerogenen und endokrinen Potentials in das Interesse der Öffentlichkeit. Diese Substanzen gelangen in großen Mengen, z.B. aus industriellen …
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Investigation of the antioxidant activity of phenolic compounds in cell culture systems
This study focuses on newly synthesized polyphenolic compounds which were expected to be antioxidants in vivo. Antioxidants are compounds which at low concentrations can prevent or reduce the deleterious effects caused by reactive oxygen species (ROS) induced by UVA exposure of the skin. This study …
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The Chlorination of Pharmaceuticals and Other Phenolic Compounds in the Presence of Iodide
… diagnostic agents, and a litany of other compounds commonly added to household products such as sunscreens, soaps, toothpastes, and deodorants. If present in natural waters, PPCPs can come into contact with disinfectants during drinking water treatment processes. PPCPs are already known to …
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Intestinal absorption and metabolism of bush tea major phenolic compounds exhibiting anti-diabetic activity.
… regarding absorption and bioavailability of phenolic compounds present in A. phylicoides. Aim of the study: The present study aims to identify major phenolic compounds in an aqueous extract of A. phylicoides, and describe their transport characteristics across the Caco-2 monolayer. Methods …
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Antiproliferative Activity of Carotenoids, Phenolic Compounds, and Volatile Terpenoids in Carrots (Daucus carota L.)
… supplementation. It is possible that carrot phenolics are responsible for this association, though this has not been widely accepted. Volatile terpenoids from carrots have not been studied in this regard. Therefore, the primary objective of this study was to compare the antiproliferative …
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Effects of pre and post-harvest treatments on the phenolic compounds and antioxidant activity of different onion varieties
… human health since phytochemicals have multiple compounds, including phenolics, flavonoids, anthocyanins, and quercetin. The total phenolic content of onions is not only higher than its fellow allium vegetables, such as garlic and leeks, but also higher than that of other common vegetables, such …
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INHIBITION OF ACTIVITIES OF INDIVIDUAL SUBUNITS OF INTESTINAL MALTASE-GLUCOAMYLASE AND SUCRASE-ISOMALTASE BY DIETARY PHENOLIC COMPOUNDS FOR MODULATING GLUCOSE RELEASE AND GENE RESPONSE
… in a slower way and have fewer side effects. Phenolics are known to have inhibitory effect on the intestinal alpha-glucosidases. For more precise control of glucose release in the small intestine, the concept of selective inhibition of the individual subunits (C terminal, Ct; N terminal, Nt) …
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Determination of bioactive and potentially toxic compounds in food: raw material analysis and shelf life evaluation
"Bioactive compounds" are extranutritional constituents that typically occur in small quantities in food. They are being intensively studied to evaluate their effects on health. Bioactive compounds include both water soluble compounds, such as phenolics, and lipidic substances such as n-3 fatty …
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Effects of Hydroxycinnamates and Exogenous Yeast Assimilable Nitrogen on Cider Aroma and Fermentation Performance
… by a high concentration of tannins (phenolic compounds), and/or acid. The phenolic content of some cider apples far exceeds that of white wine, however most cider fermentation practices are directly taken from white winemaking, not accounting for effects of high concentrations of …
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The removal of phenols from oily wastewater by chlorine dioxide
… Chlorine dioxide was used for the removal of phenolic compounds from these oily wastewaters. Most of phenolic compounds can be destroyed by chlorine dioxide within 15 minutes if CI02-to-phenol ratios of higher than 5.0 are provided. Factors such as pH, temperature, and COD have little effect …
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Compounds Released from Biomass Deconstruction: Understanding Their Effect on Cellulose Enzyme Hydrolysis and Their Biological Activity
<p>The effect of compounds produced during biomass pretreatment on cellulolytic enzyme was investigated. Liquid prehydrolyzates were prepared by pretreating switchgrass using 24 combinations of temperature, time, and sulfuric acid concentration based on a full factorial design. Temperature was …
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INTERACTION BETWEEN PROTEINS OF PLANT ORIGIN AND WINE COMPONENTS: MOLECULAR-BASED CHOICE OF PROTEIN FINING AGENTS FOR ORGANOLEPTIC IMPROVEMENT
… between the protein matrix and wine polyphenolics is the basis of the flocculation and of the consequent clarification which results in an overall improvement of wine quality parameters (Versari et al., 1999; Sarni-Machado et al., 1999). In accordance with the PhD thesis project, we …
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