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.

Word History and Origins

Origin of biuret¹

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

Example Sentences

Inasmuch as most natural proteins contain several such groups, the biuret reaction is a very general test for proteins.

From Project Gutenberg

Amongst these is the biuret reaction: a pink colour obtained by adding a trace of copper sulphate and an excess of caustic soda.

From Project Gutenberg

On now testing a portion of the clear filtrate for peptone by the biuret test, not a trace of a reaction could be obtained.

From Project Gutenberg

The absence of a biuret reaction would point in that direction and the question must await further study.

From Project Gutenberg