Acidity: Difference between revisions

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== Background ==

The term derives from the Latin ''acidus'', meaning “sour” or “sharp”. In the context of ~~wine~~, ~~acidity~~ describes both the measurable presence of acid compounds and the sensory impression they impart. [[Grapes]] contain a mixture of organic ~~acids~~, of which [[tartaric]] and [[malic]] are most significant, alongside smaller quantities of [[citric]] and [[succinic]] acids.<ref>Jackson, ''Wine Science: Principles and Applications'', 5th ed., Academic Press, 2020, ISBN 978-0128161180.</ref> The concentration of these acids is influenced by [[grape variety]], [[vineyard location]], and [[harvesting|harvest]] conditions, with cooler climates generally producing higher acid levels.

The term derives from the Latin ''acidus'', meaning “sour” or “sharp”. In the context of Wine, Acidity describes both the measurable presence of acid compounds and the sensory impression they impart. [[Grapes]] contain a mixture of organic Acids, of which [[tartaric]] and [[malic]] are most significant, alongside smaller quantities of [[citric]] and [[succinic]] acids.<ref>Jackson, ''Wine Science: Principles and Applications'', 5th ed., Academic Press, 2020, ISBN 978-0128161180.</ref> The concentration of these acids is influenced by [[grape variety]], [[vineyard location]], and [[harvesting|harvest]] conditions, with cooler climates generally producing higher acid levels.

== Characteristics ==

Acidity in wine is usually assessed by two methods: titratable acidity, which measures the total concentration of [[hydrogen ions]], and [[pH]], which indicates the relative strength of acidity.<ref>Iland, Bruer, Edwards, Weeks & Wilkes, ''Chemical Analysis of Grapes and Wine'', Patrick Iland Wine Promotions, 2004, ISBN 978-0958160515.</ref> [[Wines]] with lower pH values tend to show greater [[Stability]] and resistance to [[microbial spoilage]].

From a sensory perspective, acidity provides crispness and liveliness, balancing sweetness and softening the perception of [[tannin]]. Excessive acidity can render a wine harsh, while insufficient acidity may result in a wine that tastes [[flat]] or [[cloying]].<ref>Peynaud, ''Knowing and Making Wine'', Wiley, 1984, ISBN 978-0471881491.</ref> High natural acidity also plays a key role in the ability of certain ~~wines~~, such as [[Riesling]] or [[Champagne (wine)|Champagne]], to age gracefully.

From a sensory perspective, acidity provides crispness and liveliness, balancing sweetness and softening the perception of [[tannin]]. Excessive acidity can render a wine harsh, while insufficient acidity may result in a wine that tastes [[flat]] or [[cloying]].<ref>Peynaud, ''Knowing and Making Wine'', Wiley, 1984, ISBN 978-0471881491.</ref> High natural acidity also plays a key role in the ability of certain Wines, such as [[Riesling]] or [[Champagne (wine)|Champagne]], to age gracefully.

== Use in winemaking ==

Winemakers manage acidity both in the [[Vineyard]] and in the [[cellar]]. [[[[Harvest]] timing]] is crucial, as acid levels decline as ~~grapes~~ ripen. In warmer regions, where natural acidity may be insufficient, acidification with [[[[Tartaric]] acid]] is permitted in many [[wine law|wine laws]]. Conversely, in cooler climates, deacidification may be used to soften sharp [[Flavours]].<ref>Boulton, Singleton, Bisson & Kunkee, ''Principles and Practices of Winemaking'', Springer, 1999, ISBN 978-0834217011.</ref>

Winemakers manage acidity both in the [[Vineyard]] and in the [[cellar]]. [[[[Harvest]] timing]] is crucial, as acid levels decline as Grapes ripen. In warmer regions, where natural acidity may be insufficient, acidification with [[[[Tartaric]] acid]] is permitted in many [[wine law|wine laws]]. Conversely, in cooler climates, deacidification may be used to soften sharp [[Flavours]].<ref>Boulton, Singleton, Bisson & Kunkee, ''Principles and Practices of Winemaking'', Springer, 1999, ISBN 978-0834217011.</ref>

[[Malolactic fermentation]], a process in which [[[[Malic]] acid]] is converted to the softer lactic acid, is widely used in the production of [[red wine|red wines]] and some [[white wine|whites]], such as [[Chardonnay]], to reduce sharpness and add [[Complexity]]. Regional styles are closely tied to acid ~~balance~~: for example, German [[Rieslings]] are prized for their racy acidity, while [[Mediterranean]] [[Reds]] often rely on softer acid structures.

[[Malolactic fermentation]], a process in which [[[[Malic]] acid]] is converted to the softer lactic acid, is widely used in the production of [[red wine|red wines]] and some [[white wine|whites]], such as [[Chardonnay]], to reduce sharpness and add [[Complexity]]. Regional styles are closely tied to acid Balance: for example, German [[Rieslings]] are prized for their racy acidity, while [[Mediterranean]] [[Reds]] often rely on softer acid structures.

== See also ==

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 == Background ==
-The term derives from the Latin ''acidus'', meaning “sour” or “sharp”. In the context of wine, acidity describes both the measurable presence of acid compounds and the sensory impression they impart. [[Grapes]] contain a mixture of organic acids, of which [[tartaric]] and [[malic]] are most significant, alongside smaller quantities of [[citric]] and [[succinic]] acids.<ref>Jackson, ''Wine Science: Principles and Applications'', 5th ed., Academic Press, 2020, ISBN 978-0128161180.</ref> The concentration of these acids is influenced by [[grape variety]], [[vineyard location]], and [[harvesting|harvest]] conditions, with cooler climates generally producing higher acid levels.
+The term derives from the Latin ''acidus'', meaning “sour” or “sharp”. In the context of Wine, Acidity describes both the measurable presence of acid compounds and the sensory impression they impart. [[Grapes]] contain a mixture of organic Acids, of which [[tartaric]] and [[malic]] are most significant, alongside smaller quantities of [[citric]] and [[succinic]] acids.<ref>Jackson, ''Wine Science: Principles and Applications'', 5th ed., Academic Press, 2020, ISBN 978-0128161180.</ref> The concentration of these acids is influenced by [[grape variety]], [[vineyard location]], and [[harvesting|harvest]] conditions, with cooler climates generally producing higher acid levels.
 == Characteristics ==
 Acidity in wine is usually assessed by two methods: titratable acidity, which measures the total concentration of [[hydrogen ions]], and [[pH]], which indicates the relative strength of acidity.<ref>Iland, Bruer, Edwards, Weeks & Wilkes, ''Chemical Analysis of Grapes and Wine'', Patrick Iland Wine Promotions, 2004, ISBN 978-0958160515.</ref> [[Wines]] with lower pH values tend to show greater [[Stability]] and resistance to [[microbial spoilage]].
-From a sensory perspective, acidity provides crispness and liveliness, balancing sweetness and softening the perception of [[tannin]]. Excessive acidity can render a wine harsh, while insufficient acidity may result in a wine that tastes [[flat]] or [[cloying]].<ref>Peynaud, ''Knowing and Making Wine'', Wiley, 1984, ISBN 978-0471881491.</ref> High natural acidity also plays a key role in the ability of certain wines, such as [[Riesling]] or [[Champagne (wine)|Champagne]], to age gracefully.
+From a sensory perspective, acidity provides crispness and liveliness, balancing sweetness and softening the perception of [[tannin]]. Excessive acidity can render a wine harsh, while insufficient acidity may result in a wine that tastes [[flat]] or [[cloying]].<ref>Peynaud, ''Knowing and Making Wine'', Wiley, 1984, ISBN 978-0471881491.</ref> High natural acidity also plays a key role in the ability of certain Wines, such as [[Riesling]] or [[Champagne (wine)|Champagne]], to age gracefully.
 == Use in winemaking ==
-Winemakers manage acidity both in the [[Vineyard]] and in the [[cellar]]. [[[[Harvest]] timing]] is crucial, as acid levels decline as grapes ripen. In warmer regions, where natural acidity may be insufficient, acidification with [[[[Tartaric]] acid]] is permitted in many [[wine law|wine laws]]. Conversely, in cooler climates, deacidification may be used to soften sharp [[Flavours]].<ref>Boulton, Singleton, Bisson & Kunkee, ''Principles and Practices of Winemaking'', Springer, 1999, ISBN 978-0834217011.</ref>
+Winemakers manage acidity both in the [[Vineyard]] and in the [[cellar]]. [[[[Harvest]] timing]] is crucial, as acid levels decline as Grapes ripen. In warmer regions, where natural acidity may be insufficient, acidification with [[[[Tartaric]] acid]] is permitted in many [[wine law|wine laws]]. Conversely, in cooler climates, deacidification may be used to soften sharp [[Flavours]].<ref>Boulton, Singleton, Bisson & Kunkee, ''Principles and Practices of Winemaking'', Springer, 1999, ISBN 978-0834217011.</ref>
-[[Malolactic fermentation]], a process in which [[[[Malic]] acid]] is converted to the softer lactic acid, is widely used in the production of [[red wine|red wines]] and some [[white wine|whites]], such as [[Chardonnay]], to reduce sharpness and add [[Complexity]]. Regional styles are closely tied to acid balance: for example, German [[Rieslings]] are prized for their racy acidity, while [[Mediterranean]] [[Reds]] often rely on softer acid structures.
+[[Malolactic fermentation]], a process in which [[[[Malic]] acid]] is converted to the softer lactic acid, is widely used in the production of [[red wine|red wines]] and some [[white wine|whites]], such as [[Chardonnay]], to reduce sharpness and add [[Complexity]]. Regional styles are closely tied to acid Balance: for example, German [[Rieslings]] are prized for their racy acidity, while [[Mediterranean]] [[Reds]] often rely on softer acid structures.
 == See also ==