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To make these drinks, caffeine is extracted by steeping the plant product in water, a process called infusion. Caffeine-containing drinks, such as coffee, tea, and cola, are consumed globally in high volumes. In 2020, almost 10 million tonnes of coffee beans were consumed globally. [19] Caffeine is the world's most widely consumed psychoactive ...
A promotional poster for "Tisane Gauloise", by Paul Berthon. Some feel [clarification needed] that the term tisane is more correct than herbal tea or that the latter is even misleading, but most dictionaries record that the word tea is also used to refer to other plants beside the tea plant and to beverages made from these other plants.
Infusion is a chemical process that uses botanicals (typically dried herbs, flowers or berries) that are volatile and release their active ingredients readily in water, oil, or alcohol. In this process, a liquid is typically boiled (or brought to another appropriate temperature) and poured over the herb.
Coffee extraction occurs when hot water is poured over coffee grounds, causing desirable compounds such as caffeine, carbohydrates, lipids, melanoidins and acids to be extracted from the grounds. The degree to which extraction occurs depends on a number of factors, such as water temperature, brewing time, grind fineness, and quantity of grounds.
The chemical complexity of coffee is emerging, especially due to observed physiological effects which cannot be related only to the presence of caffeine. Moreover, coffee contains an exceptionally substantial amount of antioxidants such as chlorogenic acids, hydroxycinnamic acids, caffeine and Maillard reaction products, such as melanoidins. [3]
Caffeine can cause a physical dependence, if consumed in excessive amounts. [3] The need for caffeine can be identified when individuals feel headaches, fatigue and muscle pain 24 hours after their last energy drink. [4] Some commercially distributed drinks contain guarana, a South American berry with a caffeine content about twice that of ...
Coffee fruit contains caffeine. [ 9 ] [ 10 ] Caffeine has possible neuro-protective properties, including a possible prevention or reduction in rate of progression of dementia. [ citation needed ] Caffeine levels in cascara are similar to those found in black teas.
Caffeine remains stable up to 200 °C (392 °F) and completely decomposes around 285 °C (545 °F). [190] Given that roasting temperatures do not exceed 200 °C (392 °F) for long and rarely if ever reach 285 °C (545 °F), the caffeine content of a coffee is not likely changed much by the roasting process.