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Updated: May 31, 2025
Average 12 samples of Indian tea: Theine 3.73 Increase about 3 per cent Tannin 8.09 Increase about 20 per cent
Tea will cure a headache or may produce one; will dispose to rest or excite to action. We will sum then by conceding that all our quoted authorities are right in their conclusions, if limited to a limited class of tea-drinkers, and all are wrong, in a very broad application. Theine is the one constant agency in the effects of tea.
Shepard's plantation at Summerville sometimes disappoints those accustomed to the strong flavors and pronounced fragrance of some foreign teas, but it contains a full proportion of that stimulating, sustaining constituent of all genuine teas, theine, as consumers all discover.
The theine in tea and the theobromine in cocoa are so similar to caffeine that chemists can not differentiate them. These drinks when first taken cause a gentle stimulation under which more work can be done than ordinarily, but this is followed by a reaction, and then the powers of body and mind wane so much that the average output of work is less than when the body is not stimulated.
They are azotized, and contain quite a marked amount of nitrogen. Chemically, they consist of carbon 19, hydrogen 10, nitrogen 4, oxygen 4. Some allowance is therefore to be made for them as plastic food. "Good black tea contains of theine from 2.00 to 2.13 per cent. Coffee-leaves contain of theine from 1.15 to 1.25 per cent. Paraguay tea contains of theine from 1.01 to 1.23 per cent.
In testing and grading teas for purchase and sale, their appearance, odor and taste, their color and body when "drawn," determine their pecuniary value, without relation to their percentage of theine, or its effects upon the tester. Theine, when isolated by heat from the tea leaf or infusions, condenses in minute white needles or crystals, having no odor and but a faintly bitter taste.
THEINE is an antidote to opium, and M. Max accordingly became somewhat restored, and lay staring at the Oriental, and blinking his eyes foolishly. Said, leaving the tea service upon the little table, glided from the room. Something else the Egyptian had left upon the tray in addition to the dainty vessels of porcelain; it was a steel ring containing a dozen or more keys.
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