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Article

Sensory and Compositional Characteristics of Blanc Du Bois Wine

Eric Dreyer, Charles Sims, Russell Rouseff, Dennis Gray, Michael Sipowicz
Am J Enol Vitic. March 2013 64: 118-125; published ahead of print November 28, 2012 ; DOI: 10.5344/ajev.2012.11130
Eric Dreyer
1Graduate Student, Food Science & Human Nutrition Department, University of Florida, Gainesville, FL 32611
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Charles Sims
2Professor, Food Science & Human Nutrition Department, University of Florida, Gainesville, FL 32611
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  • For correspondence: csims@ufl.edu
Russell Rouseff
3Professor, Citrus Research & Education Center, University of Florida, Lake Alfred, FL 33850
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Dennis Gray
4Professor, Mid-Florida Research & Education Center, University of Florida, Apopka, FL 32703 and
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Michael Sipowicz
5Extension Enologist, Agricultural Research and Extension Center, Texas A&M University, Lubbock, TX 79403.
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Abstract

Blanc Du Bois is a hybrid white bunch grape variety developed for its ability to produce high-quality white wines, to thrive in the warm, humid climate of the southeastern United States, and for its resistance to Pierce’s disease. Little is known regarding Blanc Du Bois wine flavor profiles and how these relate to perceived quality. This study investigated the sensory and chemical characteristics of Blanc Du Bois wines to characterize quality differences among them. The study was divided into three sections: trained panel descriptive analysis, chemical and volatile analyses of the wines, and quality evaluation by expert wine judges. Fourteen commercially available Blanc Du Bois wines were rated in the descriptive analysis panel. Fourteen panelists generated a bank of 13 attributes deemed to be the most prominent aromas and flavors in the wines. After training with the aid of references for each attribute and calibration of all panelists with a 15-point intensity scale, the intensity of each attribute was rated for each wine. Results were analyzed using two-way ANOVA, principal component analysis (PCA), and correlation analysis. There were differences among wines for each attribute, and when plotted with the wine judges’ quality ratings, PCA showed specific attributes to be correlated with high- or low-quality wines. The results indicate that samples exhibiting tropical and tree fruit characteristics were higher in quality than those with citrus, greenwood/ grassy, and phenolic qualities. Higher quality wines tended to be positively correlated with increased levels of ethyl and acetate esters, including isoamyl acetate, ethyl octanoate, ethyl decanoate, and ethyl dodecanoate.

  • Blanc Du Bois
  • descriptive analysis
  • flavor volatiles
  • ©2013 by the American Society for Enology and Viticulture
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Sensory and Compositional Characteristics of Blanc Du Bois Wine
Eric Dreyer, Charles Sims, Russell Rouseff, Dennis Gray, Michael Sipowicz
Am J Enol Vitic.  March 2013  64: 118-125;  published ahead of print November 28, 2012 ; DOI: 10.5344/ajev.2012.11130

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Sensory and Compositional Characteristics of Blanc Du Bois Wine
Eric Dreyer, Charles Sims, Russell Rouseff, Dennis Gray, Michael Sipowicz
Am J Enol Vitic.  March 2013  64: 118-125;  published ahead of print November 28, 2012 ; DOI: 10.5344/ajev.2012.11130
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