Index Catalog // ScholarsArchive@OSU

Investigating the effects of temperature on secondary metabolism in Vitis vinifera L. cv. merlot berries

Creator:: Cohen, Seth D.
Abstract:: Grapes (e.g. Vitis vinifera L.) are one of the more important fruit crops from an economic standpoint with world market values over 550 million US dollars in 2007 and 2008, second to apples (United States Department of Agriculture). While a satisfactory level of ripeness is of primary concern, the quality...
Resource Type:: Dissertation
Full Text:: : _______________________________________________________ James A. Kennedy Grapes (e.g. Vitis vinifera L.) are one of the more important fruit

Influence of vine vigor and shading in Pinot noir (Vitis vinifera L.) on the concentration and composition of phenolic compounds in grapes and wine

Creator:: Cortell, Jessica M.
Abstract:: In 2003 and 2004 vigor zones were delineated in two commercial vineyard sites based on vine growth variation to assess fruit and wine phenolic chemistry. In 2004, the effects of shading on the accumulation of phenolic compounds were also investigated. Model extractions were done from the shading experiment and the...
Resource Type:: Dissertation
Full Text:: . Abstract approved: _________________________________________________ James A. Kennedy In 2003

Effect of berry integrity on proanthocyanidin extraction during wine production

Creator:: Cerpa-Calderon, Fiorella Karen
Abstract:: Proanthocyanidins are a grape-derived phenolic class of compound that provide wine with bitterness and astringency. Because of this, proanthocyanidins are considered to be essential components of wine quality. Proanthocyanidins are localized in the seed, skin and stem tissue of the grape berry and the composition of proanthocyanidins will vary depending...
Resource Type:: Masters Thesis
Full Text:: James A. Kennedy Interest in research on the phenolic compounds in red wine continues to grow due

Analysis of proanthocyanidin A2 and its presence in various commercial products

Creator:: Koerner, Jayma L.
Abstract:: Proanthocyanidins (PACs) containing A-type linkages, like those found in cranberry, have been implicated as beneficial phenolic compounds in human health, but much research is still required to better understand their activity fully. One major impediment to progress has been the existence of effective analytical methods for A-type PAC quantification. This...
Resource Type:: Masters Thesis
Full Text:: . Kennedy Proanthocyanidins (PACs) containing A-type linkages, like those found in cranberry, have

Assessing the impact of temperature on grape phenolic metabolism

Creator:: Cohen, Seth D.
Abstract:: Many climatic factors influence grape berry composition including nutrient status, water availability, biotic stress, sun exposure and temperature. Previous research examined the effects of many factors listed above and much progress has been made. It is often difficult, however, to separate effects that typically confound each other, such as sun...
Resource Type:: Masters Thesis
Full Text:: : _______________________________________________________ James A. Kennedy Many climatic factors influence grape berry composition including

Development of anthocyanins and proanthocyanidins in Pinot noir grapes and their extraction into wine

Creator:: Pastor del Rio, Jose L.
Abstract:: Color stability and mouth feel quality are two of the most important aspects of red wine quality. Anthocyanins and proanthocyanidins are responsible for these attributes and it has been shown that weather conditions during the growing season and grape maturity can effect these components in wine. However, investigations into proanthocyanidin...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: James A. Kennedy Color stability and mouth feel quality are two of the most

Composition of flavonoid phenolic polymers isolated from red wine during maceration and significance of flavan-3-ols in foods pertaining to biological activity

Creator:: Aron, Patricia M.
Abstract:: Representing the most common flavonoid consumed in the American diet, the flavanols and their polymeric condensation products, the proanthocyanidins, are regarded as functional ingredients in various beverages, whole and processed foods, herbal remedies and supplements. Their presence in food affects food quality parameters including astringency, bitterness, sourness, sweetness, salivary viscosity,...
Resource Type:: Masters Thesis
Full Text:: : _________________________________________________ James A. Kennedy Representing the most common flavonoid consumed in the American diet

Effect of chemical composition on textural quality of red wine

Creator:: Ntuli, Richard Gondai
Abstract:: Red wine texture is a particularly important property of overall red wine quality whose origin is not well understood. The overall goal of this study was to improve our understanding of how chemical composition influences red wine texture. Unlike previous studies that have used model systems to investigate how chemical...
Resource Type:: Masters Thesis

Development of Anthocyanins and Tannins in Pinot noir Grapes and their Relative Importance in Wine [2002]

Creator:: Kennedy, James A., Godard, Mee, and Watson, Barney
Abstract:: The objectives of this research project are to understand tannin and anthocyanin changes during berry development in Pinot noir fruit and wines. Specifically, the objectives of this research project are: · Determine the effect of berry development on the composition of tannins in cv. Pinot noir berries · Determine the...
Resource Type:: Technical Report
Full Text:: their Relative Importance in Wine James A. Kennedy, Mee Godard, Barney Watson Department of Food

Control of Hydrogen Sulfide Formation during Fermentation

Creator:: Bakalinsky, Alan, Martin, Olga, and Kennedy, James A.
Abstract:: Hydrogen sulfide and related sulfur compounds produced internally by yeast during fermentation are considered highly undesirable if they are excreted and exceed threshold concentrations in the finished wine, as they cause an unpleasant "reduced character". The threshold for hydrogen sulfide is on the order of parts per billion and that...
Resource Type:: Technical Report
Full Text:: fermentation Alan T. Bakalinsky, Olga Martin, and Jim Kennedy, Department of Food Science and Technology

ScholarsArchive@OSU

Investigating the effects of temperature on secondary metabolism in Vitis vinifera L. cv. merlot berries

Influence of vine vigor and shading in Pinot noir (Vitis vinifera L.) on the concentration and composition of phenolic compounds in grapes and wine

Effect of berry integrity on proanthocyanidin extraction during wine production

Analysis of proanthocyanidin A2 and its presence in various commercial products

Assessing the impact of temperature on grape phenolic metabolism

Development of anthocyanins and proanthocyanidins in Pinot noir grapes and their extraction into wine

Composition of flavonoid phenolic polymers isolated from red wine during maceration and significance of flavan-3-ols in foods pertaining to biological activity

Effect of chemical composition on textural quality of red wine

Development of Anthocyanins and Tannins in Pinot noir Grapes and their Relative Importance in Wine [2002]

Control of Hydrogen Sulfide Formation during Fermentation

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