Index Catalog // ScholarsArchive@OSU

Investigating the Quality Dynamics of American Aroma Hops Intended for Dry-Hopping Beer

Creator:: Lafontaine, Scott R.
Abstract:: Historically, brewers have used dry-hopping (a cold extraction of nonvolatile and volatile chemicals from hops into fermenting or finished beer) to increase the microbial stability and shelf life of their beer. As hoppy beer styles have gained in popularity over the last decade (2007-2017), the objective of dry-hopping has turned...
Resource Type:: Dissertation
Full Text:: R. Lafontaine for the degree of Doctor of Philosophy in Food Science and Technology presented on

Examining Environmental and Genetic Influences on the Brewing Performance of Hops (Humulus lupulus) and Barley (Horduem vulgare)

Creator:: Van Simaeys, Karli R.
Abstract:: In short, the brewing process uses hot water to extract fermentable sugars from malt to make a wort that is bittered by hops and finally fermented by yeast to produce beer. The four key ingredients in brewing are malt, water, hops, and yeast. Malt is perhaps the key ingredient, as...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Karli R. Van Simaeys for the degree of Master of Science in Food

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:: and berry composition. The concentrations of volatile compounds and precursors in grape berries are

Hop Kilning Temperature Sensitivity of Dextrin-Reducing Enzymes in Hops

Creator:: Rubottom, Lindsey N.
Abstract:: Kilning, which is the drying operation in hop cultivation, is a processing step that can have a tremendous impact on hop quality. Historically, hops have been dried at temperatures ranging from 140-155°F. In the last decade, growers have moved toward kilning hops at lower temperatures averaging between 125-140°F in the...
Resource Type:: Masters Thesis
Full Text:: . Barth, R., The Chemistry of Beer : The Science in the Suds. Wiley and Sons Inc.: Hoboken, New Jersey

Composition of Pinot noir Wines Produced from Different Crop Levels

Creator:: Li, Jingwen
Abstract:: The production of high-quality wine is an important target for wineries worldwide, and low crop level (yield) has been one vineyard management criterion long believed to achieve wine quality. Low yields are most often achieved by removing clusters from the grapevine. Some studies show that cluster thinning can enhance grape...
Resource Type:: Masters Thesis
Full Text:: level was adjusted using cluster thinning at lag-phase of berry development using a cluster number per

The potential role of aliphatic gamma- and delta-lactones in beer fruit aroma

Creator:: Hotchko, Rachel Ann
Abstract:: This work set out to examine the potential contribution of five aliphatic lactones, γ-nonalactone, γ-decalactone, γ-dodecalactone, δ-decalactone and δ-dodecalactone to stone fruit aroma in beer. This work consists of three related studies; lactone olfaction thresholds, additive/synergistic aroma effects and a gas-chromatography-mass-spectrophometry method of analysis. First was the determination of these...
Resource Type:: Masters Thesis
Full Text:: possessing stone fruit/peach, coconut/oily, red berry and melon plus overall fruity intensity as

Use of Organoleptic Methodologies to Evaluate Wine Oligosaccharides and Wines made from Grapevine Red Blotch Virus Positive Vines Subjected to Various Vineyard Management Practices

Creator:: Hoffman, Samuel
Abstract:: The human senses can be used as analytical tools to evaluate many different aspects of our daily lives. The use of our senses through organoleptic methods offers unique and powerful insights into the characteristics of different stimuli. Due to the unique function of the different sensory organs we use to...
Resource Type:: Masters Thesis

Investigation of Optimal Extraction Conditions and Microencapsulation Technique for Stabilizing Anthocyanins and Polyphenols from Fruit Materials

Creator:: Wang, Wenjie
Abstract:: The objectives of this research were to investigate the optimal conditions for anthocyanins extraction from different anthocyanin rich fruit and to develop microencapsulation formulation for improving stability of anthocyanin extracts. In the extraction optimization study, two extraction methods, "conventional solvent extraction (CE)" and "ultrasound-assisted extraction (UE)" for three different anthocyanin-rich...
Resource Type:: Masters Thesis
Full Text:: Reference (1) Delgado-Vargas, F.; Jiménez, A. R.; Paredes-López, O. Natural Pigments: Carotenoids

The Influence of Vineyard and Winery Nitrogen Supplementation on Chardonnay and Pinot Noir Winemaking and Wine Quality

Creator:: Ruppel, Meghan L.
Abstract:: Nitrogen is a crucial nutrient required by yeast to successfully complete alcoholic fermentation. In particular, the concentration of yeast assimilable nitrogen (YAN) influences fermentation kinetics and the production of a range of volatile aroma compounds, both desirable and undesirable. YAN is naturally present in the grape, but producers can boost...
Resource Type:: Masters Thesis
Full Text:: , which can increase berry size (Keller and Hrazdina 1998). This is problematic because an increase in

Exploration into the Influence of Malolactic Fermentation Parameters and Pre-fermentation Juice Treatment on Chardonnay Mouthfeel

Creator:: Sereni, Anthony
Abstract:: Mouthfeel is one of the most important quality parameters of Chardonnay wines. Malolactic fermentation (MLF) is an important process in wine production, and influential to wine mouthfeel, with the reduction in acidity being particularly important for cool climate wines that generally have higher acidity such as Chardonnay. MLF is typically...
Resource Type:: Masters Thesis
Full Text:: ® results of Chardonnay wines analyzed +R (black) and –R (grey)………………………………………………………………..60 3.2

ScholarsArchive@OSU

Investigating the Quality Dynamics of American Aroma Hops Intended for Dry-Hopping Beer

Examining Environmental and Genetic Influences on the Brewing Performance of Hops (Humulus lupulus) and Barley (Horduem vulgare)

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

Hop Kilning Temperature Sensitivity of Dextrin-Reducing Enzymes in Hops

Composition of Pinot noir Wines Produced from Different Crop Levels

The potential role of aliphatic gamma- and delta-lactones in beer fruit aroma

Use of Organoleptic Methodologies to Evaluate Wine Oligosaccharides and Wines made from Grapevine Red Blotch Virus Positive Vines Subjected to Various Vineyard Management Practices

Investigation of Optimal Extraction Conditions and Microencapsulation Technique for Stabilizing Anthocyanins and Polyphenols from Fruit Materials

The Influence of Vineyard and Winery Nitrogen Supplementation on Chardonnay and Pinot Noir Winemaking and Wine Quality

Exploration into the Influence of Malolactic Fermentation Parameters and Pre-fermentation Juice Treatment on Chardonnay Mouthfeel

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