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Black tea: 41 mg 35 mg 6% 1 cup of black tea (mean 35 mg caffeine), 1 oz rum (40%) Rev: Cola: 38 mg 8 mg 7% 473 ml cola (37.84 mg caffeine: cola contains 8 mg/100 ml in average), [5] Jägerbomb: Caffeinated energy drink: 29 mg 21 mg 3.5% 1/2 (125 ml) can energy drink (30 mg caffeine). 1/2 oz Jägermeister (35%) Vodka Red Bull: red bull: 26 mg ...
Caffeine Properties Chemical formula. C 8 H 10 N 4 O 2: Molar mass: 194.194 g·mol −1 Appearance Odorless, white needles or powder Density: ... 192 mg/kg (rat, oral ...
There is no standard value for "a cup of coffee." The caffeine content of cola drinks and most energy drinks can be difficult to determine, because in many cases the labels do not indicate the dose per serving. Caffeine doses in these beverages range from 20 to 30 mg in some soft drinks, up to 350 mg or more in some energy drinks.
Plasma caffeine levels are usually in the range of 2–10 mg/L in coffee drinkers, 12–36 mg/L in neonates receiving treatment for apnea, and 40–400 mg/L in victims of acute overdosage. Urinary caffeine concentration is frequently measured in competitive sports programs, for which a level in excess of 15 mg/L is usually considered to ...
In general, one serving of coffee ranges from 80 to 100 milligrams, for a single shot (30 milliliters) of arabica-variety espresso, to approximately 100–125 milligrams for a cup (120 milliliters) of drip coffee. [10] [11] Arabica coffee typically contains half the caffeine of the robusta variety. [9]
Caffeine is found naturally in various plants such as coffee and tea. Studies have found that 89 percent of adults in the U.S. consume on average 200 mg of caffeine daily. [2] One area of concern that has been presented is the relationship between pregnancy and caffeine consumption.
According to the USDA National Nutrient Database, a 240-millilitre (8 US fl oz) cup of "coffee brewed from grounds" contains 95 mg caffeine, whereas an espresso (25 mL) contains 53 mg. [190] According to an article in the Journal of the American Dietetic Association, coffee has the following caffeine content, depending on how it is prepared: [187]
Free caffeic acid can be found in a variety of beverages, including brewed coffee at 63.1-96.0 mg per 100 ml [7] and red wine at 2 mg per 100 ml. [8] It is found at relatively high levels in herbs of the mint family, especially thyme, sage and spearmint (at about 20 mg per 100 g), and in spices, such as Ceylon cinnamon and star anise (at about 22 mg per 100 g).
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