Tannin management Red wines Flashcards
(15 cards)
What is the impact of canopy management on tannin levels?
Greater exposure leads to increased tannin levels and greater polymerisation, resulting in less bitterness.
How does water deficit or deficit irrigation affect tannin levels?
It produces smaller, ripe berries with higher skin-pulp ratio, leading to higher levels of tannins and anthocyanins.
Why is monitoring grape maturity important for tannin profile?
Unripe grape material and stems create green, unripe tannins. Monitoring ensures ripe tannin profile.
What is the effect of hand-picking or machine-harvesting on tannin profile?
Hand-picking allows for the inclusion of whole bunches, which can bring freshness and softer tannins.
What is the difference between whole bunch and destemmed grapes in terms of tannin profile?
Whole bunches give wines with more fine-grained, firm tannins, while destemmed grapes give wines with firm, rounded, intense tannins.
What is carbonic fermentation and its effect on tannins?
Carbonic fermentation produces fruit-driven wines with soft, medium (-) tannins.
What is the purpose of cold soak or pre-fermentation maceration?
It enhances color and fruit extraction with minimal tannin uptake.
How do fermentation temperatures affect tannin extraction?
Higher temperatures increase tannin extraction and polymerization, while cold fermentation creates softer tannins.
What is the role of punch down or pump over during fermentation?
They increase the extraction of tannins by increasing skin and juice contact.
What is the purpose of post-fermentation maceration?
It gains more structure, color, and tannins.
Why are powdered tannins added during vinification?
They help color stabilization and adjust balance in low tannin must.
What is the impact of oak ageing on tannins?
Oak ageing exposes wine to slow oxidation, softening tannins and adding oak tannins depending on the type of oak used.
What is micro-oxygenation and its effect on tannins?
Micro-oxygenation softens tannins by injecting oxygen through the wine.
What are enological tannins and their purpose?
Enological tannins derived from grape skins, oak, or gall nuts stabilize color and enhance mid-palate grip.
How does blending affect tannin profile?
Blending allows winemakers to adjust the proportion of press wine, which is richer in phenolics, tannins, and color.
