biuret reaction
1biuret reaction — n a reaction that is shown by biuret, proteins, and most peptides on treatment in alkaline solution with copper sulfate and that results in a violet color * * * formation of a chelate having an intense violet red color when biuret or compounds… …
2biuret reaction — biureto reakcija statusas T sritis chemija apibrėžtis Baltymų ir peptidų nustatymo reakcija. atitikmenys: angl. biuret reaction rus. биуретовая реакция …
3biuret reaction — noun : a reaction shown by biuret, proteins, and most peptides on treatment in alkaline solution with copper sulfate, resulting in a violet color, and used especially in testing for proteins …
4biuret test — n a test esp. for proteins using the biuret reaction * * * a colorimetric test for protein that makes use of the biuret reaction (q.v.) …
5Biuret test — The biuret test is a chemical test used for detecting the presence of peptide bonds. In a positive test, a copper(II) ion is reduced to copper(I), which forms a complex with the nitrogens and carbons of the peptide bonds in an alkaline solution.… …
6biuret — /ˈbaɪjurɛt/ (say buyyoohret) noun an organic compound, NH2CONHCONH2, formed by heating urea. In strongly alkaline solution, it gives a violet colour when copper sulphate is added (the biuret reaction), and is therefore used as a test for protein …
7biuret reagent — any of various alkaline copper sulfate solutions containing a variety of stabilizers, used in the biuret reaction (q.v.) …
8biuret — ● biuret nom masculin Diamide formé par la décomposition de l urée par la chaleur. (Le biuret donne, en milieu alcalin, avec l ion cuivrique, un complexe violet pourpre qui sert à caractériser l urée et les peptones.) ⇒BIURET, subst. masc. CHIM.… …
9Reaction du biuret — Réaction du biuret La réaction du biuret est une réaction mettant en évidence les liaisons peptidiques. La méthode consiste à réaliser un dosage direct par photospectrométrie à 540nm, lié à la formation d un complexe coloré en mauve entre le Cu2+ …
10Biuret — Général …
