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biuret

[bahy-yuh-ret, bahy-yuh-ret]

noun

Chemistry.
  1. a white crystalline substance, C 2 H 5 O 2 N 3 ⋅H 2 O, soluble in water and alcohol, used for the identification of urea, from which it is formed on heating.



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Word History and Origins

Origin of biuret1

< German Biuret (1847); bi- 1, urea, -uret
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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.

Proteoses—products of hydrolysis, soluble in water, not coagulated by heat, precipitated by saturation of solution with ammonium sulfate.Peptones—products of further hydrolysis soluble in water, not coagulated by heat, not precipitated by ammonium sulfate, give biuret reaction.Peptides—individual amino-acids, or poly-peptides, may or may not give biuret reaction.

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The filtered fluid gives the biuret reaction; it contains leucin, tyrosin, and ammonia; hence it is clear that the ferment acts to some extent as a digestive of albumen.

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They give the biuret and xanthoproteic reactions, and form salts with both acids and bases.

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The decomposition products are generally the same as with the general albumin; it gives the biuret reaction; forms salts with acids and alkalies, but is essentially acid in nature.

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