How will you estimate the protein by biuret method?

Aim: To estimate the protein using Biuret method.

Principle: The –CO-NH- bond (peptide) in polypeptide chain reacts with copper sulphate in.
Pipette out 0.0, 0.2, 0.4, 0.6, 0.8 and 1 ml of working standard in to the series of labeled.
Make up the volume to 1 ml in all the test tubes.

How do I prepare for biuret test?

Preparation Biuret reagent

Biuret reagent is prepared by adding NaOH in CuSO4 solution, making it alkaline.
To prepare 1000ml of Biuret reagent. Take 1.5 gram of pentavalent copper sulphate (CuSO4) and 6 gram of Sodium potassium tartarate and dissolve them in 500 ml of distilled water.

What is the difference between biuret and Lowry method of protein estimation?

The Biuret assay is not much good for protein concentrations below 5 mg/ml. By using the Folin-Ciocalteu reagent to detect reduced copper makes the Lowry assay nearly 100 times more sensitive than Biuret reaction alone.

What happens deamination?

In the human body, deamination takes place in the liver. It is the process by which amino acids are broken down. The amino group is removed from the amino acid and converted to ammonia. The rest of the amino acid is made up of mostly carbon and hydrogen, and is recycled or oxidized for energy.

How do you estimate protein content in a sample?

Different methods of estimation of Protein concentration are mentioned below:

Biuret method: Sensitivity of this method is very low.
UV absorption: Sensitivity of this method is moderate.
BCA assay: This method is highly sensitive and detects proteins at a low concentration of 1 µg.

Is biuret and Lowry more accurate?

What product is generated by deamination reactions?

Urea Is Produced During Deamination and Is Eliminated as a Waste Product. The ammonia released during deamination is removed from the blood almost entirely by conversion into urea in the liver.

How will you estimate the protein by biuret method?