Appalachian State University’s Enology Services Lab 2013 Report
Sample Submissions • 2,327 Samples to date, including 1,240 in 2012 Varietals Submitted: Diamond Niagara Steuben Barbera Doreen Noble Syrah/Shiraz Cabernet Franc Foch Norton Tempranillo Cabernet Sauvignon Grenache Petit Manseng Touriga Nacional Carlos Malbec Petit Verdot Traminette Carmenere Matapor Petite Manseng Veranda Catawba Melody Petite Verdot Vermentino Chambourcin Merlot Pinot gris Vidal blanc Chardonel Montepulciano Pinot noir Viognier Chardonnay Mouvedre Riesling Zinfandel Chenin blanc Muscat Sangiovese Also Submitted: Concord Muscato Scuppernong Fruit Wine, Cider, Cynthiana Nebbiolo Seyval blanc Mead, Kombucha
Top Varietals of Submitted Juice Top Varietals of Submitted Wines Merlot 11.9% Cabernet Sauvignon 10.8% Pinot gris 10.1% Cabernet Franc 10.0% Chambourcin 9.2% Chardonnay 9.7% Cabernet Sauvignon 7.3% Montepulciano 8.7% Chardonnay 6.4% Chambourcin 8.6% Tempranillo 5.5% Merlot 8.2% Viognier 5.5% Sangiovese 6.7% Sangiovese 4.6% Blend: Red Vinifera 4.1% Syrah 4.6% Petite Verdot 3.5% Traminette 4.6% Malbec 2.6% Total 70% Total 73%
2012 Juice Averages °BRIX TA (g/L) pH Malic (mg/100ml) YAN Red Vinifera 19.42 4.84 3.86 206.63 191.26 Red Hybrid 19.61 6.44 4.09 135.20 239.27 White Vinifera 18.27 5.94 3.74 296.25 271.28 White Hybrid 19.74 6.08 3.66 286.11 249.67 Statistically Significant Differences: • BRIX dropped in 2012 compared to 2011 levels for all but Hybrid White varietals • TA’s in Hybrid Reds higher than Vinifera Reds in 2012 • Malic in Vinifera Whites higher versus all Reds in 2012 • YAN in Vinifera Reds lower than either Hybrid or Vinifera Whites.
Juice Parameter Averages Most Frequent Varietals: Reds
Juice Parameter Averages Most Frequent Varietals: Whites
Moving on to Wine Samples
2012 Finished Wine Averages Malic FSO2 TSO2 TA Red Vinifera 76.19 26.54 103.25 5.86 Red Hybrid 54.53 42.00 97.32 6.55 White Vinifera 164.46 22.23 120.45 5.91 White Hybrid 271.29 18.25 93.25 7.01 pH VA Alcohol RS Red Vinifera 3.76 0.07 12.48 1.04 Red Hybrid 3.61 0.06 12.15 0.27 White Vinifera 3.65 0.04 12.83 0.03 White Hybrid 3.37 0.04 12.81 0.88 Statistically Significant Differences: • Malic levels in Hybrid Whites higher than all Reds • Total SO 2 levels have risen since 2011, especially in Vinifera Reds • VA levels rose in calendar year 2012, but not statistically significant by end of season.
Varietal Performance in 2012 Wines: Reds
Varietal Performance in 2012 Wines: Reds
Varietal Performance in 2012 Wines: Whites
Varietal Performance in 2012 Wines: Whites
Volatile Acidity Values Harvest 2011 through 2012 0.18 0.16 0.14 0.12 VA (g/100ml) 0.1 0.08 0.06 0.04 0.02 0 7/26/11 9/14/11 11/3/11 12/23/11 2/11/12 4/1/12 5/21/12 7/10/12 8/29/12 10/18/12 12/7/12 1/26/13 Analysis Date < 1% of white wines were over their legal limits in Legal Limits: 2012 4.8% of Vinifera Reds and 2.6% Hybrid Reds Whites: 0.12 g/100mL were on or over the legal limit in 2012 Reds: 0.14 g/100 mL (of samples requesting VA analysis)
For full overviews of 2012 data see: Viewing Data under http://wine.appstate.edu/lab Contact us at enology@appstate.edu
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