Services Lab 2013 Report Sample Submissions 2,327 Samples to date, - - PowerPoint PPT Presentation

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

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% Top Varietals of Submitted Juice Top Varietals of Submitted Wines

°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 2012 Juice Averages

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

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 2012 Finished Wine Averages

Statistically Significant Differences:

• Malic levels in Hybrid Whites higher than all Reds
• Total SO2 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

Legal Limits: Whites: 0.12 g/100mL Reds: 0.14 g/100 mL < 1% of white wines were over their legal limits in 2012 4.8% of Vinifera Reds and 2.6% Hybrid Reds were on or over the legal limit in 2012

(of samples requesting VA analysis)

0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0.18 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 VA (g/100ml) Analysis Date

Volatile Acidity Values Harvest 2011 through 2012

For full overviews of 2012 data see: Viewing Data under http://wine.appstate.edu/lab Contact us at enology@appstate.edu