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Fining For Defects

Fining For Defects. Chik Brenneman University of California. Overview. Case study approach Needs for fining/clarification depend on the components responsible for the haze/flavor attributes Winemaking approach often will dictate the specific need (or lack thereof) for fining. Diamond Muscat.

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Fining For Defects

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  1. Fining For Defects Chik Brenneman University of California

  2. Overview • Case study approach • Needs for fining/clarification depend on the components responsible for the haze/flavor attributes • Winemaking approach often will dictate the specific need (or lack thereof) for fining

  3. Diamond Muscat • Released in 2000 as an early season white seedless • Has potential for high yields • Typically a raisin (Golden Muscat) or table grape • Has potential for wine or concentrate production

  4. Diamond Muscat

  5. Case Study: 2012 Diamond Muscat“Ice Wine” from Fresno County (KAC) • Wine making protocol adapted from Brock University and advice from Daniel Pambianchi (Maleta Winery, Niagara, Ontario, Canada • Dried on vine until brix ̴35 • 788# harvested 8/20/2013 Cold Storage • Delivered to UCD pilot winery 8/21/2013 • Cold Storage overnight

  6. Case Study: 2012 Diamond Muscat • Whole cluster press, Bucher Vaslin XPF22 • Initial pressure to 1.0 bar • Working pressure 0.5 bar • Press cycle duration = 5 hours • Yield 107 gallons/ton (44 gallon yield) • SO2 addition of 50 mg/L to juice

  7. Case Study: 2012 Diamond Muscat • Cold Settled at 6 C overnight • Racked • Brix 34.8, TA=4.44 g/L, pH=3.85 • Tartaric Acid to target 6.0 g/L TA • TA = 5.93 g/L, pH = 3.51 • Yeast Lallemand QA23 (4#/K) • N supplement as recommended (300 mg/L)

  8. Case Study: 2012 Diamond Muscat

  9. Wine Data

  10. Wine Data

  11. Conclusions • Open for discussion

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