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Merck

TP0200

Sigma-Aldrich

Total Protein Kit, Micro-Lowry, Onishi & Barr Modification

sufficient for ~50 manual assays

Sinónimos:

Total Protein Assay Kit

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About This Item

UNSPSC Code:
12352202
NACRES:
NA.32

description

wavelength 500-750nm

Quality Level

usage

sufficient for ~50 manual assays

protein detection level measuring range

0-1 mg/mL

parameter

18-26 °C temperature
200 μL sample volume

storage temp.

2-8°C

General description

The biuret and Lowry procedures are used for protein determination. The former is widely used for clinical assays. The latter, though more sensitive, is used for investigative work and is limited by poor stability of combined reagents, non-reproducibility of color, especially at low protein concentration, and nonlinear chromogenic response with protein concentration. Ohnishi and Barr modified the biuret reagent for the Lowry procedure, thereby simplifying it while improving the stability of the combined reagent.

Application

Total Protein Kit, Micro-Lowry, Onishi & Barr Modification has been used to determine total soluble protein concentrations:
  • in the dialyzates/extracts of gliadins
  • in the extracts of flour (Avena sativa and Triticum durum) and seeds (Chenopodium quinoaSalvia hispanica L.)
  • in the stored samples of rat liver microsomal fractions

Principle

Colorimetric, Endpoint.assay. Ohnishi and Barr′s modification of micro Lowry method. According to procedure, dilute biuret reagent reacts with peptide bonds to yield a purple-blue complex, the color of which is intensified by the addition of phenol reagent. Absorbance, read at 550-750 nm, is used to determine results from a standard curve.

Los componentes del kit también están disponibles por separado

Referencia del producto
Descripción
SDS

  • B3934Biuret reagent, protein detection level 150-1,000 μg/mL 110 mLSDS

  • Folin & Ciocalteu’s phenol reagent 5 mL

Required but not provided

Referencia del producto
Descripción
Precios

pictograms

Corrosion

signalword

Danger

hcodes

Hazard Classifications

Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1

Storage Class

8A - Combustible corrosive hazardous materials

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificados de análisis (COA)

Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»

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