Red Wine Color Demystified
Winemaking Breakout Session

This session is a primer on red and rose wine coloration, featuring presentations on sensory, wine production, aging and how to measure coloration.

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Jim Harbertson
Washington State University, Tri-Cities

James Harbertson is an Associate Professor of Enology at Washington State University’s Wine Science Center located at the Tri-Cities Campus in Richland, Washington and is a faculty member in the School of Food Science and Viticulture and Enology Program. He received his bachelor’s degree in biochemistry and doctorate in agricultural chemistry from the University of California at Davis.

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Federico Casassa
California Polytechnic State University, San Luis Obispo

Dr. Federico Casassa received a BS in Viticulture and a MS in Enology from the School of Agronomic Sciences in Mendoza (Argentina), and a Ph.D. in Wine Chemistry and Sensory Analysis from Washington State University (USA). He is an Associate Professor of Enology with the Wine and Viticulture Department of Cal Poly San Luis Obispo.


Hildegarde Heymann
University of California, Davis

Sensory scientist Dr. Hildegarde Heymann joined the Department of Viticulture and Enology in January 2003. Formerly a Professor at the University of Missouri, Dr. Heymann has worked in all areas of sensory science. At UC Davis Dr. Heymann has continued her work with descriptive analysis methodology and multivariate data analyses.


Caroline Merrell
Jackson Family Wines, California

While growing up in New Hampshire, where not even cool climate varieties survive, Caroline never imagined a career in the wine industry. It wasn’t until her senior year at Bucknell University, when she began brainstorming what career path she wanted to take with her degree in chemistry, that she really discovered wine. Shortly after, Caroline joined the wine chemistry graduate program at Washington State University. Luckily, she fell in love with wine right away, and went on to earn her doctorate in 2017.


Anita Oberholster
University of California, Davis

Anita Oberholster completed her PhD in wine sciences at the University of Adelaide, Australia in 2008. She moved to the Department of Viticulture and Enology at UC Davis, California as a Cooperative Extension Specialist in 2011, from her role as researcher at the Department of Viticulture and Oenology at Stellenbosch University.

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