biuret


Also found in: Dictionary, Medical, Wikipedia.
Related to biuret: Biuret test, Biuret reagent

biuret

[‚bī·ya′ret]
(organic chemistry)
NH2CONHCONH2 Colorless needles that are soluble in hot water and decompose at 190°C; a condensation product of urea.
Mentioned in ?
References in periodicals archive ?
Protein concentration of induced rat liver S9 was determined by biuret method (Gornall et al.
The total urinary FLC concentration exceeded the benzethonium chloride TUP in 54 of 105 cases, the biuret TUP in 26 of 105 cases, the modified biuret TUP in 17 of 105 cases, and the pyrocatechol violet TUP in 46 of 105 cases, with maximum differences of 11, 9.
In all 10 patients with evidence of protein degradation, the direct biuret technique, which can measure protein fragments, detected markedly higher concentrations of total proteins (range, 1520-23 280 mg/L) than were detected by the pyrogallol red method (range, 140-5030 mg/L), which underestimates protein fragments and low-molecular-weight proteins (21).
It has previously been demonstrated that the PYR-molybdate method is analytically and clinically comparable to the reference biuret method (15).
He promptly found himself chairman of a subcommittee, which in time established a standard biuret method for total protein along with a Standard Reference Material (SRM) of highly pure bovine albumin.
The aim of the present study was to analyze urine samples from 20 diabetic patients with varying degrees of microalbuminuria for albumin by immunochemical nephelometry (Beckman Array Protein Analysis System) and for total urinary protein by the Biuret assay (for peptide bonds) (4) and by the benzethonium chloride method (5).
Total protein was measured by the Biuret method (2) on a Dax 72 analyzer (Bayer plc, Diagnostics Division).
The total protein concentration in urine can be determined by biuret assay (1-3), precipitation with trichloroacetic acid-Ponceau S (TCA-PS) [1] (4), turbidimetry [using TCA (5), sulfosalicylic acid (6), or benzethonium chloride (BEC) (7)], or protein dye-binding assays utilizing Coomassie Brilliant Blue (CBB) (8-19) or Pyrogallol Redmolybdate (PRM) (20-22).
Second reagent for determining the concentration of total protein in serum or plasma by the biuret method.
The Vitros 700 CSF protein determination is based on biuret colorimetry, but with decreasing reflectance density (670 nm) of the [Cu.
Pre-programmed Applications : dsDNA, ssDNA, RNA, and Oligonucleotides, Protein UV (A280), Protein Dye, Bradford, Lowry, BCA, Biuret, Cell density
Creatinine and albumin in plasma were measured with a Vitros 950[R] analyzer (Ortho Clinical Diagnostics), and protein was measured by the biuret method on a Cobas Mira[R] analyzer (Roche).