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Updated: June 12, 2025
Strong teas have a constipating effect, particularly such as the bitter English Breakfast teas, in which there is a very large proportion of tannin. This large percentage of tannin accounts for the prevalence of constipation among female tea drinkers. Unripe fruits contain a high percentage of tannin which, in the ripening processes of the fruit, becomes changed into cellulose and sugar.
Finding these preliminary remarks taken in good part, he commenced the process of "cramming." "But oh, my friend," said he, with a most sanctimonious air, "did you visit, and I am ashamed as an American citizen to ask the question, I feel the blood a tannin' of my cheek when I inquire, did you visit the South?
But the most important thing to consider in this condition is the dietetic regulation of the bowels. There are some foods that tend to constipate while others act as a laxative. Such foods for example, as contain a considerable portion of tannin, are always constipating.
If we examine the must of most of our American wine grapes closely, we find that they not only contain an excess of acids in inferior seasons, but also a superabundance of flavor or aroma, and of tannin and coloring matter.
There are more good hides buried in the States, black and white, every year, than would pay the poor-rates and state-taxes. They make excellent huntin'-coats, and would make beautiful razor-straps, bindin' for books, and such like things; it would make a noble export. Tannin' in hemlock bark cures the horrid nigger flavour.
The sociable hermit who had summered for the last twenty years in his tiny cabin on the point gave us friendly counsel and excellent large blueberries. The matron provided us with daily bags of most delicate tea, a precaution against the native habit of "squatting" the leaves that is, boiling and squeezing them to extract the tannin.
Instances like the last, in which an excessive amount of a poison by its sudden emetic action induces vomiting before there is absorption of a sufficient quantity to cause death, are sometimes noticed. McCreery mentions a case of accidental poisoning with half an ounce of tartar emetic successfully treated with green tea and tannin. Mason reports recovery after taking 80 gr. of tartar emetic.
Emetics freely; infusions containing tannin, as coffee, tea, oak-bark, galls, etc. Stimulants. Hypodermic injection of 1/120 grain of aconitine. Method of Extraction from the Stomach, etc. Use Stas-Otto process. Tests for Digitalin. A white substance, sparingly soluble in water, not changed by nitric acid; turns yellow, changing to green, with hydrochloric acid.
It vaporizes at 185 degrees C. or 365 degrees Fahr., hence it is not driven off by continued boiling of tea infusion. W. Dittmar found by experiment that prolonged steeping of tea leaves up to ten minutes increased the proportion of theine in the infusion. His results are as follows: STEEPED 5 MINUTES. Average of 8 samples Chinese tea: Theine, per cent infusion 2.58 Tannin 3.06
It was harrowing he sweated under it to be forced to torture her, of all women in the world; could anything be worse than that? "Hurt?" he inquired, anxiously. She answered by frowning, with a sharp intake of breath, putting her fingers over her closed lips and nodding her head. McTeague sprayed the tooth with glycerite of tannin, but without effect.
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