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Creator:: Cohen, Seth D., Tarara, Julie M., and Kennedy, James A.
Abstract:: Temperatures during the day and night are known to influence grape berry metabolism and resulting composition. In this study, the flavonoid composition of field-grown Vitis vinifera L. cv. Merlot berries was investigated as a function of diurnal temperature range (DTR). The DTR was compressed by cooling berries during the day...
Resource Type:: Article
Full Text:: Berry Development and Modifies Flavonoid Partitioning in Grapes Seth D. Cohen,1 Julie M. Tarara,2 and

Creator:: Cohen, Seth D., Tarara, Julie M., Gambetta, Greg A., Matthews, Mark A., and Kennedy, James A.
Abstract:: Little is known about the impact of temperature on proanthocyanidin (PA) accumulation in grape skins, despite its significance in berry composition and wine quality. Field-grown grapes (cv. Merlot) were cooled during the day or heated at night by +/–8 C, from fruit set to veraison in three seasons, to determine...
Resource Type:: Article
Full Text:: Journal of Enology and Viticulture 60, 13–23. Haselgrove L, Botting D, van Heeswijck R, Hoj PB, Dry PR

Creator:: Kennedy, James A., Pastor, Jose Luis, and Watson, Barney
Abstract:: The objectives of this research are to monitor tannin and anthocyanin changes during berry development and over several growing seasons to understand how the vintage effects wine composition. Specifically, the objectives of this research project are : · Determine the effect of berry development on the composition of phenolics (tannins...
Resource Type:: Technical Report
Full Text:: towards an overripe crop. In addition to the three harvest dates, one additional wine (Mid-L) was

Creator:: Bakalinsky, Alan, Martin, Olga, and Kennedy, James A.
Abstract:: Hydrogen sulfide and related sulfur compounds produced internally by yeast during fermentation are considered highly undesirable if they are excreted and exceed threshold concentrations in the finished wine, as they cause an unpleasant "reduced character". The threshold for hydrogen sulfide is on the order of parts per billion and that...
Resource Type:: Technical Report
Full Text:: II 1iI n d Control of hydrogen sulfide formation during

Creator:: Kennedy, James A., Godard, Mee, and Watson, Barney
Abstract:: The objectives of this research project are to understand tannin and anthocyanin changes during berry development in Pinot noir fruit and wines. Specifically, the objectives of this research project are: · Determine the effect of berry development on the composition of tannins in cv. Pinot noir berries · Determine the...
Resource Type:: Technical Report
Full Text:: into two lots, and 50 mg/L S02 was added to each lot. Musts were inoculated with 1 g/L Lalvin RC 212

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