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 38 for “"Polyphenolic compounds"”.
-
Antioxidant activity, protective effects and absorption of polyphenolic compounds
… and to assess the contribution of individual compounds to the total antioxidant activity. Red wines were analysed for their phenolic content and antioxidant activity using a range of complementary techniques including HPLC-tandem mass spectrometry, preparative HPLC and HPLC with an on-line …
-
Role of Polyphenolic Compounds in Chemoprevention of Breast Cancer Stem Cells
… and invasion. We postulate that PEBP or its polyphenolic components induce specific epigenetic changes by modulating miRNA networks, reducing CSCs, and preventing breast carcinoma. Thus, the overarching aim of this thesis is to better understand the mechanisms underlying the protective …
-
Study of interaction between polyphenolic compounds and protein using computational and capillary electrophoresis techniques
Submitted in fulfilment of the requirements of the Degree of Master of Technology: Chemistry, Durban University of Technology, Durban, South Africa, 2012.
-
Postprandial Effects of Pecans Ingestion on Plasma Level of Nutrients, Polyphenolic Compounds and Biomarkers of Antioxidant Status in Human Volunteers
… illinoinensis</em>) are rich sources of polyphenolic compounds and nutrients, which have antioxidant capacity results in favorable reductions in plasma lipids and lipoproteins. However, the health benefits of pecans may not be limited to blood lipid changes. There has been very little …
-
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 …
-
Engineering of polyphenol metabolism in tomatoes to enhance anti-cancer activities
Anthocyanins are polyphenolic plant pigments that are responsible for much of the attractive colour displays found in many flowers, fruit and vegetables. Anthocyanins are divided into different classes based on the number of hydroxyl groups on their phenyl B-ring and subsequent side chain …
-
Cerebrovascular and Neuronal Cellular Consequences of Amyloid-β Induced Nuclear Factor-κB Activation
… neuronal cells. Flavonoids are the most abundant polyphenolic compounds found in the human diet, and the structure of polyphenolic compounds enables them to effectively inhibit Aβ aggregation. By taking advantage of differences in diets between cultures, epidemiological studies have established a …
-
Potential for selection of new peanut genotypes with enhanced polyphenol antioxidant content
… approach; 3) to screen for new phenolic compounds in a water-soluble peanut extract using LC-MS/MS and propose phenolic biosynthesis pathways, and 4) to investigate the feasibility of developing a simple nanoparticle-based test for the rapid and low-cost phenotyping of antioxidant …
-
ΜΕΛΕΤΗ ΤΩΝ ΧΗΜΙΚΩΝ ΣΥΣΤΑΤΙΚΩΝ ΤΟΥ ΦΥΤΟΥ GALIUM MELANANTHERUM BOISS
… 4,4'-DIMETHYLSTEROLS. IN THE METHANOL EXTRACT POLYPHENOLIC COMPOUNDS WERE EXTRACTED ACCORDING TO THE CHAVAUX- PARIS PROCEDURE. THE FOLLOWING COMPOUNDS HAVE BEEN ISOLATED AND IDENTIFIED: APIGENIN, KAEMPFEROL, QUERCETIN., LUTEOLIN, CAFFEIC ACID, SCOPOLETIN, VITEXIN LUTEOLIN-7-0-B-GENTIOBIOSIDE, …
-
Cascade Approaches to Polycyclic Natural Products
… areas of natural products chemistry: the polyphenolic compounds dalesconols A and B and the coccinellid alkaloids psylloborine A, isopsylloborine A, and related monomeric structures. While polyphenols and alkaloids generally have little in common, the studies detailed herein have employed …
-
Dry milling characteristics and polyphenolic contents of adapted colored corn varieties and polyphenol extraction by combining deep eutectic solvents and ultrasound
… in case of colored corn varieties, most of the polyphenolic compounds such as anthocyanins, flavonoids, flavanols, tannins and phenolic acids are concentrated in corn pericarp which can be separated and selectively processed for their economic recovery. The corn endosperm, containing most of the …
-
Inhibiting platelet scramblase activity
… its selectivity were unsuccessful, other lead compounds were pursued. The polyphenolic compounds tannic acid and epigallocatechin gallate (EGCG’) inhibit TMEM16F activity when over-expressed in cell lines. Both tannic acid and EGCG’ are shown to inhibit platelet scramblase activity. An …
-
Effect of blueberry polyphenols on osteoclast
… process. Blueberries are a rich source of polyphenolic compounds and have been shown to be effective in decreasing incidence/symptoms of chronic inflammatory conditions. The purpose of this study was to assess the effect of blueberry polyphenols as a whole on osteoclasts by assessing …
-
Nematicidal, antimicrobial and acaricidal activity of plant secondary metabolites
… the isolation and identification of new active compounds derived from plants. In this PhD thesis we report for the first time about the use of Ailanthus altissima, Capparis spinosa, Melia azedarach and Armoracia rusticana and their secondary metabolites such as α, β- and α, β, γ, δ- unsaturated …
-
Potential health benefits of antioxidant effects of wine on lipids
… wine, is a source of a large number of different polyphenolic compounds that have antioxidant activity. The finding that the consumption of red wine might have a beneficial health effect was very appealing, resulting in a large number of epidemiological and experimental studies. To date, …
-
Quantifying Greenhouse Gas Emissions and Ammonia Volatilization from Soil Amended with Excreta from Ruminants Fed Alternative Forage-based Diets
… diets supplemented with condensed tannins or polyphenolic-containing legumes may alter nitrogen (N) metabolism in the animal and reduce gas emissions from soil receiving excreta. The objective of the study was to determine if soil receiving urine or manure from sheep fed forage diets …
-
Research on the Correlation between the Optical Properties and Antioxidant Effect of Extracts and Juices of Traditional Medicinal Plants Using the Methods of Applied Photonics // Проучване на връзката оптични свойства – антиоксидантен ефект на екстракти и сокове от традиционни лечебни растения чрез методите на приложната фотоника
… and semi-quantitative determination of compounds with antioxidant effect in extracts of medicinal plants has been adapted and applied. In order to detect correlations between the parameters of applied photonics and the substances contributing to the antioxidant activity, results were …
-
Antimicrobial Inhibitory Activities of Phenolic Extracts from Four Selected Soybean Hulls in Culture and Chicken Skin Model Systems, and Preliminary ACE-Inhibitory Activity
… proanthocyanidins and isoflavones. The polyphenolic compounds in the hulls give them various colors such as black, brown, green, yellow or even a mottled appearance. Studies have reported different soybean varieties with varying total phenolic compounds in their seed hulls, which have …
Page 1 of 2