Skip to main content


eCommons@Cornell >
Cornell University Graduate School >
Cornell Theses and Dissertations >

Please use this identifier to cite or link to this item:
Title: Human Perception Of Vapor-Phase Stimuli Provided By Alcoholic And Dealcoholized Wines
Authors: Hollis, Francine
Issue Date: 31-May-2011
Abstract: Human perception of dealcoholized and alcoholic wine vapor -phase stimuli presented retronasally and orthonasally was determined by 57 participants using citation frequencies. Ariel Chardonnay concentrate (35.45%) and Ariel Rouge concentrate (35.19 %) were provided by J. Lohr Vineyards &amp; Wines from their reverse osmosis process. Concentrate (<0.5% alcohol by volume (abv)), distilled water, and Everclear® (95% abv grain alcohol) created 5 wine stimuli (<0.5% abv, 3.75% abv, 7% abv, 10.25% abv, and 13.5% abv). No significant differences resulted among qualitative wine descriptions. But, ethanol was found to enhance perceived floral an d wood odor intensities retronasally and fruit and floral odor intensities orth onasally in Chardonnay wine. In Rouge wine , ethanol enhanced perceived fruit, spice, and vegetative odor intensities retrona sally and earth, spice, and vegetative odor intensities orthonasally. Inverse response probability patterns regarding retronasal and orthonasal smelling found for caramelized, flor al, and alcohol attributes in Chardonnay wine a nd animal, earth, and fruit attributes in Rouge wine indicate orthonasal a nd retronasal qualitative descriptions are not equivalent. Animal and Earth attributes in Rouge wine could suppress synergistic effects of ethanol on vegetative and fruit attributes retronasally. The type of vapor -phase stimuli (i.e. fruit or spice) mo dified by ethanol could depend on specific ethanol concentration. Understanding the impact of ethanol on vapor -phase stimuli in real wine can aid in the production of targeted wine aroma profiles and improve consumer acceptability of alcohol -removed and low alcohol content wines. Recognizing qualitative descriptions differ orthonasally and retronasally signifies that orthonasal wine evaluations should not be used to predict wine aroma profiles or investigate volatile interactions for food/ beverage products.
Committee Chair: Halpern, Bruce Peter
Committee Member: Gravani, Robert Bernard
Sacks, Gavin Lavi
Discipline: Food Science & Technology
Degree Name: Ph.D. of Food Science & Technology
Degree Level: Doctor of Philosophy
Degree Grantor: Cornell University
No Access Until: 2016-09-29
Appears in Collections:Cornell Theses and Dissertations

Files in This Item:

File Description SizeFormat
fh45thesisPDF.pdf5.01 MBAdobe PDFView/Open

Refworks Export

Items in eCommons are protected by copyright, with all rights reserved, unless otherwise indicated.


© 2014 Cornell University Library Contact Us