Development of Anthocyanins and Tannins in Pinot noir Grapes and their Relative Importance in Wine [2002]

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 effect of berry development on the composition of anthocyanins in cv. Pinot noir berries · Isolate and purify sufficient quantities of tannin and anthocyanin for sensory and stability studies · Determine the sensory properties of wines manipulated with anthocyanins and tannins representing extremes in composition based on grape and wine data

Manipulating Soil Moisture and Nitrogen Availability Part II: Effects on Pinot noir Must and Wine Composition

The objectives of this study are to evaluate the effects of manipulating soil moisture and nitrogen availability using different approaches, including supplemental irrigation, nitrogen addition to the soil or to the leaves, and the elimination of competition for water and nutrients between the ground cover and the grapevines by tilling. The effects ofthese viticultural practices on juice and must composition, fermentable nitrogen content, fermentation behavior, wine composition, aroma, flavor, and wine quality are being conducted over several vintages at a mature commercial Pinot noir vineyard in the southern Willamette Valley of Oregon.KEYWORDS: Nutrient Management, Soil Management, Production Science, Research, Viticultur