Index Catalog // ScholarsArchive@OSU

Development of a method to measure protein in red wines : a survey of protein, mannan and tannin in Pinot noir wines

Creator:: Smith, Mark R.
Abstract:: A number of methods to isolate and quantify protein in Pinot noir wines were evaluated. The combination of precipitation by acetone containing 10% w/v trichloroacetic acid followed by quantification with the Bradford assay, reported in yeast invertase equivalents yielded the most accurate results when compared to micro-Kjeldahl analysis. The technique...
Resource Type:: Masters Thesis
Full Text:: Mark R. Smith for the degree of Master of Science in Food Science and Technology presented on August 3

Free Monoterpene Isomer Profiles in White Wine : Effect of Grape Variety, Region and Style and Impact on Odor Perception

Creator:: Song, Mei
Abstract:: Monoterpenes are important volatile compounds to the aroma of many white wines. Many monoterpenes are chiral and found in wine as different isomers. These isomers (also known as enantiomers) are non-superimposable mirror images of each other, maintain the same molecular structure and in many instances possess different sensory characteristics. Much...
Resource Type:: Dissertation
Full Text:: , R-(+)-limonene, (2R,4S)-(+)-cis-rose oxide, (2S,4R)-(-)-cis-rose oxide, (2R,4R)-(-)-trans-rose

Development of new analytical methods for aroma analysis and investigation of impact of native yeasts on wine aroma

Creator:: Zhou, Qin
Abstract:: Three analytical methods for determination of aroma compounds in alcoholic beverages were developed and validated. These methods are sensitive and reliable that can be applied to analyze volatile phenols, stale aldehydes as well as some highly volatile aromas in alcoholic beverages. In the first study, an ethylene glycol (EG) polydimethylsiloxane...
Resource Type:: Dissertation
Full Text:: - active volatile compounds have been 2 the focus of numerous studies (Vicente Ferreira, López

Tropical Fruit Aroma in Chardonnay: Impact of Fermentation Techniques on Volatile Ester and Thiol Concentrations, Tropical Fruit Aroma Perception, Preference, and Emotional Response

Creator:: Lucas, Chase J.
Abstract:: Tropical fruit aromas are prominent in wines like Sauvignon Blanc, one of the most abundant white wines in the United States. With high consumer interest for these aromas, it has become increasingly important to understand the factors that influence the desired tropical fruit aromas in white wines. Understanding the causes...
Resource Type:: Masters Thesis
Full Text:: components when consumers and experts drink wine (Ferreira 2010). In particular, tropical fruit aroma in

Effect of Regulated Deficit Irrigation on Malbec and Syrah Grape and Wine Quality

Creator:: Yuan, Xiaoxi
Abstract:: The water status of grape vine throughout the growing season is a primary determinant of vine vigor and berry composition. The concentrations of volatile compounds and precursors in grape berries are highly influenced by viticultural practices. Imposing a water deficit on the vine during berry development is an important vineyard...
Resource Type:: Masters Thesis
Full Text:: , Ferreira and de Pinho 2004). The overall contribution of C13-norisoprenoids to the wine aroma is made

Enrichment Isolation of Brettanomyces Yeasts to Probe the Relationship Between Vineyard and Winery Populations

Creator:: Pigao, Kevin E.
Abstract:: The budding yeast Brettanomyces bruxellensis has the potential to spoil fermented beverages and cause financial losses, but also contribute positively to certain products such as Lambic beer. It is most notorious for causing “Brett” spoilage of wine, which is characterized by undesirable aromas such as “bandaid” and “barnyard”, therefore most...
Resource Type:: Masters Thesis
Full Text:: (Loureiro & Malfeito-Ferreira, 2003). This can lead to various problems formation of films on the surface

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:: '' Anthocyanidin Moiety R R1 2 Cyanidin OH H Peonidin OCH H 3 Delphinidin OH OH Petunidin OCH OH 3 Malvidin OCH

Impact of Pre-fermentation Cold Soak Conditions on Pinot Noir Wine Quality

Creator:: Fu, Mengying
Abstract:: Wine volatile composition is one of the most important components of wine quality, and it is greatly affected by multiple factors, including grape variety, viticultural practices, and winemaking procedures. Pre-fermentation cold soak is one of the winemaking techniques widely undertaken by winemakers to modify their red wine quality. Imposing a...
Resource Type:: Masters Thesis
Full Text:: -methyl-1-butanol (active amyl alcohol), and phenyl ethyl alcohol (Nykänen 1986, Ferreira, Lopez et al

Yeast protein release during fermentation and aging in a model wine

Creator:: Rowe, Jeffrey D.
Abstract:: Yeast mannoproteins released during the process of aging wine on the yeast lees have been reported to make important contributions to wine quality. However, few mannoproteins have been identified in wine and their lifespan during aging is unknown. As a first step towards better understanding the contributions of yeast mannoproteins...
Resource Type:: Masters Thesis
Full Text:: process (Ferreira et al. 2002, Waters et al. 1996). It has been reported that some yeast proteins

The effect of wine matrix on the analysis of volatile sulfur compounds by solid-phase microextraction-GC-PFPD

Creator:: Davis, Peter M.
Abstract:: Constituents of the wine matrix, including ethanol, affect adsorption of sulfur volatiles on solid-phase microextraction (SPME) fibers, which can impact sensitivity and accuracy of volatile sulfur analysis in wine. Several common wine sulfur volatiles, including hydrogen sulfide (H2S), methanethiol (MeSH), dimethyl sulfide (DMS), dimethyl disulfide (DMDS), dimethyl trisulfide (DMTS), diethyl...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Development of a method to measure protein in red wines : a survey of protein, mannan and tannin in Pinot noir wines

Free Monoterpene Isomer Profiles in White Wine : Effect of Grape Variety, Region and Style and Impact on Odor Perception

Development of new analytical methods for aroma analysis and investigation of impact of native yeasts on wine aroma

Tropical Fruit Aroma in Chardonnay: Impact of Fermentation Techniques on Volatile Ester and Thiol Concentrations, Tropical Fruit Aroma Perception, Preference, and Emotional Response

Effect of Regulated Deficit Irrigation on Malbec and Syrah Grape and Wine Quality

Enrichment Isolation of Brettanomyces Yeasts to Probe the Relationship Between Vineyard and Winery Populations

Effect of berry integrity on proanthocyanidin extraction during wine production

Impact of Pre-fermentation Cold Soak Conditions on Pinot Noir Wine Quality

Yeast protein release during fermentation and aging in a model wine

The effect of wine matrix on the analysis of volatile sulfur compounds by solid-phase microextraction-GC-PFPD

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