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Camellia sinensis is a species of evergreen shrub or small tree in the flowering plant family Theaceae.Its leaves, leaf buds, and stems can be used to produce tea.Common names include tea plant, tea shrub, and tea tree (unrelated to Melaleuca alternifolia, the source of tea tree oil, or the genus Leptospermum commonly called tea tree).
Caffeine and its precursors theobromine and theophylline are only found in sect. Thea and are not found in other species of Camellia or other Theaceae. Caffeine content in the tea bush makes up 2.5-4% of the leaf's dry weight, and this high content of catechins and caffeine in the tea bush is the result of artificial selection by humans for ...
The term "herbal" tea is often used to distinguish these beverages from "true" teas (e.g., black, green, white, yellow, oolong), which are prepared from the cured leaves of the tea plant, Camellia sinensis. Unlike true teas, most tisanes do not naturally contain caffeine (though tea can be decaffeinated, i.e., processed to remove caffeine). [4 ...
Here's everything to know about the caffeine content of green tea. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to ...
Varieties of true teas—which are teas that are derived from the camellia sinensis plant and include green, black, oolong, and white—have been linked to a slew of health benefits, including ...
There are two varietals: camellia sinensis var. sinensis, which is milder in flavor and grows mostly in China and other East Asian countries, and camellia sinensis var. assamica, which is more ...
Although health benefits have been assumed throughout the history of Camellia sinensis 's consumption, there is no high-quality evidence showing that tea consumption gives significant benefits other than possibly increasing alertness, an effect caused by caffeine in the tea leaves.
“High doses of caffeine (between 250-300 mg, which equates to ~2-3 cups of coffee) ... (Camellia sinensis L.) in rats" Medicine Sciences: "Mechanisms of Caffeine-Induced Diuresis"
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