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 302 for “"grape"”.
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Breast Cancer Inhibition by Grape Constituents
… breast cancer preventive properties. Concord grapes are rich in polyphenolic chemicals and anthocyanin pigments that may have biological properties which could suppress cancer such as having antioxidant, antiproliferative, and proapoptotic actions. To determine the potential breast cancer …
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Electronic Nose Evaluation of Grape Maturity
Grape maturity is a critical attribute impacting potential wine quality. Maturity evaluation is difficult due to the many interrelated factors that impact physicochemical changes and limitations in the understanding of these factors. Current methods of assessing grape maturity are destructive, …
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Evaluation of Peanut Skin Extract, Grape Seed Extract, and Grape Seed Extract Fractions to Reduce Populations of Select Foodborne Pathogens
Grape seed extract (GSE) and peanut skin extract (PSE) are waste products in the wine and peanut industries. Both extracts have high concentrations of polyphenols, known to possess antioxidant and antimicrobial properties. A subcategory of polyphenol is procyanidin, which can be divided into two …
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Assessment of Vineyard Nitrogen Management upon Grape Chemistry
… the Eastern United States has led to vines and grape musts which are deficient in nitrogen (N). A must that is deficient in yeast assimilable nitrogen (YAN) can lead to the production of off aromas and stuck or sluggish fermentations. It has also been suggested that musts with limited amino …
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Cell wall metabolism in developing grape berries / Kylie Nunan.
Bibliography: leaves 129-151.
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Discriminating the Effects of Vineyard Management Practices on Grape and Wine Volatiles from Cabernet Franc and Merlot Grape Varieties Using Electronic Nose Systems
… to evaluate the impact of vineyard practices on grape/wine composition include measuring physico-chemistry indices and performing wine sensory analyses. These activities are both time-consuming and destructive. Two electronic nose (ENose) systems: a hand-held conducting polymer-based and a …
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Discriminating the Effects of Vineyard Management Practices on Grape and Wine Volatiles from Cabernet Franc and Merlot Grape Varieties Using Electronic Nose Systems
… to evaluate the impact of vineyard practices on grape/wine composition include measuring physico-chemistry indices and performing wine sensory analyses. These activities are both time-consuming and destructive. Two electronic nose (ENose) systems: a hand-held conducting polymer-based and a …
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Effect of canopy manipulation and fermentation on grape aroma components
… selected aroma components and the influence of grapevine canopy manipulation and fermentation on those components. A polymeric styrene resin (XAD-2) was evaluated for its ability to absorb and desorb five monoterpene alcohols, three monoterpene hydrocarbons, four monterpene oxides, two aromatic …
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Examining celestial polarization with the Gamma Ray Polarimeter Experiment (GRAPE)
… of the Gamma Ray Polarimeter Experiment (GRAPE), which is designed to measure the polarization of astronomical sources from 50 keV to 500 keV, and presents the Crab observation results from the successful 2011 balloon campaign. The successful balloon flight of this instrument took place on …
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Grape Seed Extract as an Adjunct for Modulating Colon Carcinogenesis
… States and increasing in incidence globally. Grape seed extract (GSE) is a nutritional supplement with claims as a chemopreventive compound. Preliminary experimental data suggests that dietary GSE may be protective against colorectal cancer. In preliminary experiments, we identified candidate …
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Use of grape pomace as a fine aggregate in concrete
… conducted into the use of pomace in concrete. Grape pomace is a waste by-product from the six-stage wine-making process comprising skins, stalks, and seeds. Stalks are removed during destemming at stage two while white grape pomace is removed after the pressing process, stage 3, and red grape …
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Land treatment of grape-processing effluents near Robertson, Western Cape
… generated by distilling, wine making and grape juice production in the Western Cape. Primary settling and treatment in aerobic and anaerobic lagoons typically precede disposal to land. Land treatment can effectively remove COD and also benefit the soil by increasing organic matter, cation …
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Within the skin: Grape berries during the mature stages of ripening
… two white-skinned (Chardonnay, Semillon) wine grape cultivars. Identical sample aliquots were analyzed for transcripts by a grapevine whole genome oligonucleotide microarray and RNAseq technologies, proteins by nano-liquid chromatography-mass spectroscopy, and metabolites by gas …
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Exploring the chemical properties of polyphenols in cold-hardy grape cultivars
Cold-hardy interspecific grape cultivars, such as cv. ‘Marquette’ and ‘Frontenac’, are the crossbreeding of several Vitis species, including the native North American Vitis riparia and Vitis labrusca, and the traditional European Vitis vinifera. These grape cultivars are bred to withstand the harsh …
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Characterization, Interaction and Chemoprevention of Potent Constituents From Grape Cell Culture
Grape and its cell culture extracts are rich in flavonoids and stilbenes that are biologically active. The objectives of this study were (1) to evaluate catalytic inhibition of grape (a Vitis hybrid 'Bailey Alicant A') cell culture extract and subfractions on human DNA topoisomerase II for cancer …
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An investigation into the production of polyphenol antioxidants from grape marc
Includes bibliographical references (leaves 132-145).
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Molecular Mechanisms by which a Grape Seed Procyanidin Extract Modulates Glucose Homeostasis
… glucose dysregulation. An example includes a grape seed procyanidin extract (GSPE), which has been demonstrated to decrease glucose levels in cell and animal models, however, the precise underlying molecular mechanisms are still under investigation. One of the reported mechanisms by which GSPE …
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EXPLORING THE IMPACT OF PRESSING: FROM GRAPE COMPOSITION TO SPARKLING WINE PRODUCTION.
… the knowledge gap existing with regard to grape, must, and base and sparkling wine composition based on the pressing conditions applied. Grape juice was obtained under laboratory-scale with the aims to select the pressing method for the (i) proper monitoring the grape ripening and (ii) the …
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Evaluation of film, jacket and internal cooling during fermentation of grape juice
The work described in this thesis deals with analytical and experimental aspects of water-film cooling, jacket cooling and internal cooling, which are the three predominant types of fermentation cooling found in the South African wine industry. During the past decades questions were constantly …
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