theine

American  

[thee-een, -in] / ˈθi in, -ɪn /

noun

1. caffeine, especially in tea.

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theine British  

/ ˈθiːiːn, -ɪn /

noun

1. another name for caffeine, esp when present in tea

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Etymology

Origin of theine

First recorded in 1830–40; from New Latin the(a) “tea” ( see origin at tea) + -ine ²

Example Sentences

See Examples For:

theine

It was claimed for this special model that it extracted only the theine, and not the tannin from the tea.

From The Art of Living in Australia ; together with three hundred Australian cookery recipes and accessory kitchen information by Mrs. H. Wicken by Philip E. Muskett

Strangely enough theine is the one important constituent which is entirely neglected by the tea-tester and the trader.

From Tea Leaves by Francis Leggett

Tea contains two harmful substances, theine and tannin,—from three to six per cent of the former and more than one fourth its weight of the latter.

From Science in the Kitchen. by Mrs. E. E. Kellogg

Stimulants.—Tea and coffee contain an alkaloid theine, besides volatile oils, tannin, &c.

From The Chemistry of Food and Nutrition by A. W. Duncan

Now this quantity is contained in 0.6 parts of theine, or 2 grains 8/10ths of theine can give to an ounce of bile the nitrogen it contains in the form of taurine.

From The Commercial Products of the Vegetable Kingdom Considered in Their Various Uses to Man and in Their Relation to the Arts and Manufactures; Forming a Practical Treatise & Handbook of Reference for the Colonist, Manufacturer, Merchant, and Consumer, on the Cultivation, Preparation for Shipment, and Commercial Value, &c. of the Various Substances Obtained From Trees and Plants, Entering into the Husbandry of Tropical and Sub-tropical Regions, &c. by P. L. Simmonds