biuret

/bahy-yuh-ret, bahy-yuh-ret/US // ˌbaɪ yəˈrɛt, ˈbaɪ yəˌrɛt //

双酚类,双酚,双酚类药物

Definitions

n.名词 noun

1
Chemistry.
- : a white crystalline substance, C2H5O2N3⋅H2O, soluble in water and alcohol, used for the identification of urea, from which it is formed on heating.

Inasmuch as most natural proteins contain several such groups, the biuret reaction is a very general test for proteins.
Amongst these is the biuret reaction: a pink colour obtained by adding a trace of copper sulphate and an excess of caustic soda.
On now testing a portion of the clear filtrate for peptone by the biuret test, not a trace of a reaction could be obtained.
The absence of a biuret reaction would point in that direction and the question must await further study.