Tonic water

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File:Tonic water uv.jpg
Under ultraviolet light, the quinine in tonic water makes the liquid fluorescent, even in negligible quantity

Tonic water (or Indian tonic water) is a carbonated soft drink in which quinine is dissolved. Originally used as a prophylactic against malaria, tonic water usually now has a significantly lower quinine content and is consumed for its distinctively bitter taste. It is often used in mixed drinks, particularly the gin and tonic.

History

The drink has garnered its name from the medicinal effects of this bitter flavouring. The quinine was added to the drink as a prophylactic against malaria, since it was originally intended for consumption in tropical areas of South Asia and Africa, where that disease is endemic. The mixed drink gin and tonic originated in British colonial India when the British population would mix their medicinal quinine tonic with gin to make it more palatable.

Since 2005 there has been an increase in premium tonic water in the market place, there has also been a greater emphasis on using real quinine as opposed to quinine flavouring. These premium mixers typically cost twice or three times as much as their more generic contemporaries and are seen as another way of upselling a drink. [1]

Quinine content

Medicinal tonic water originally contained only carbonated water and a large amount of quinine. However, most tonic water today contains a less significant amount of quinine, and is thus used mostly for its flavour. As a consequence, it is less bitter, and is also usually sweetened. Sweet tonic water may contain corn syrup or sugar, making it less bitter. Some manufacturers also produce diet tonic water, which may contain artificial sweeteners. Traditional-style tonic water with little more than quinine and carbonated water is less common but may be preferred by those who desire the bitter taste.

In the United States, the Food and Drug Administration limits the quinine content in tonic water to 83 ppm[2] (83 mg per litre if calculated by mass), which is 0.25% to 0.50% of the concentration used in therapeutic tonic. Still, it is often recommended as a relief for cramps. Dr. Jim Mitterando states that "Quinine is one of the few treatments shown to help reduce nocturnal cramps. Quinine is found in low concentrations in tonic water (one-tenth of prescription dose). Drinking 8 to 16 ounces (a quarter to a half litre) at night can be a simple remedy."[3] However, because of quinine's risks, the United States Food and Drug Administration has declared that nonprescription sources, such as tonic water, should not be used to prevent or treat leg cramps.[4]

Uses

Tonic water is often used as a drink mixer for cocktails, especially those made with gin or vodka (for example, a gin and tonic). Tonic water with lemon or lime flavour added is known as bitter lemon or bitter lime, respectively. Such soft drinks are more popular in Europe than in the United States.

Fluorescence

Tonic water will fluoresce under ultraviolet light, owing to the presence of quinine. In fact, the sensitivity of quinine to ultraviolet light (UV) is such that it will visibly fluoresce in direct sunlight.

References

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ast:Tónica (bébora)

bs:Tonik ca:Tònica cs:Tonik de:Tonic Water es:Tónica (bebida) eo:Toniko (trinkaĵo) eu:Tonika fr:Eau tonique id:Air tonik it:Acqua tonica he:מי טוניק nl:Tonic ja:トニックウォーター no:Tonic pl:Tonik pt:Água tônica ru:Тоник fi:Tonic-vesi sv:Tonic tr:Tonik (içecek) uk:Тонік

zh:通寧水
  1. Premium cocktail mixers stirring interest. "Battle Creek Enquirer" 10th August 2010 retrieved from:http://www.battlecreekenquirer.com/article/20100719/ENTERTAINMENT/100719003/Premium+cocktail+mixers+stirring+interest
  2. "21 CFR §172.575 Quinine" (PDF). Retrieved 15 December 2008. 
  3. Mitterando, Dr. Jim. "Ask the Doctor: Nocturnal leg cramps", The Patriot Ledger.
  4. United States Food and Drug Administration (2006-12-11). "FDA Orders Unapproved Quinine Drugs from the Market and Cautions Consumers About Off-Label Quinine to Treat Leg Cramps". Retrieved 2009-12-14.