Viticulture and EnologyViticulture and Enology

Dr. Grant R. Cramer Dr. Grant R. Cramer Department of Biochemistry Department of Biochemistry University of Nevada, RenoUniversity of Nevada, Reno

What are Viticulture and Enology?What are Viticulture and Enology?

Viticulture is the Science of Grape-Growing

The Cycle of Vine Growth The Cycle of Vine Growth Budbreak

Rapid Shoot Growth

Cane Hardening

Leaf Fall

Dormancy

Full Canopy

Bloom

Berry Set

Prune

Berry SofteningHarvest

Enology is the science of wine (making)

The Process of Making WineThe Process of Making Wine

• 1. Crush and press grapes. 1. Crush and press grapes.

• 2. Add yeast to must in fermentation vessel, 2. Add yeast to must in fermentation vessel, cover for 3 days to several weeks. cover for 3 days to several weeks.

• 3.Siphon wine off the sediments (lees) into 3.Siphon wine off the sediments (lees) into clean secondary fermentation vessel. clean secondary fermentation vessel.

• 4. Bottle when wine is clear and all 4. Bottle when wine is clear and all fermentation has stopped.fermentation has stopped.

White Wine-MakingWhite Wine-Making Red Wine-MakingRed Wine-Making

HarvestHarvest

Desteming and Crushing of Desteming and Crushing of GrapesGrapes

Traditional Small Scale PressTraditional Small Scale Press

Pneumatic PressPneumatic Press

Add yeast to must in Add yeast to must in fermentation vessel, cover for fermentation vessel, cover for 3 days to several weeks3 days to several weeks

Siphon wine off the sediments Siphon wine off the sediments (lees) into clean secondary (lees) into clean secondary fermentation vesselfermentation vessel

Bottle when wine is clear and Bottle when wine is clear and all fermentation has stoppedall fermentation has stopped

Wine AnalysisWine Analysis