xanthin
Americannoun
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the part of the coloring matter in yellow flowers that is insoluble in water.
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a yellow coloring matter in madder.
noun
Etymology
Origin of xanthin
1830–40; < French xanthine or < German Xanthin. See xantho-, -in 2
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Most of the nitrogenous material of the broth is in the form of creatin, sarkin, and xanthin, nitrogenous extractives or amid substances having a much lower food value than proteids.
From Human Foods and Their Nutritive Value by Harry Snyder
The chief of these products are adenin, guanin, hypoxanthin, xanthin, and uric acid.
From Dietetics for Nurses by Fairfax T. Proudfit
The spinal and muscular hyperic excitability produced by caffein is, in his opinion, due to the methyl groups attached to the xanthin nucleus.
From All About Coffee by William H. (William Harrison) Ukers
In the roots three coloring matters are obtained: alizarin and purpurin, which are both red, and xanthin, which is yellow.
From Rugs: Oriental and Occidental, Antique & Modern A Handbook for Ready Reference by Rosa Belle Holt
The xanthin group is almost without any excitatory action, and its metabolic end products are constant.
From All About Coffee by William H. (William Harrison) Ukers
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