Let's do an experiment for the presence of protein in foods.Take thick

1.	Let's do an experiment for the presence of protein in foods.Take thick aqueous solution of gram flour in a clean test tube. Add two-three drops Copper Sulphate(CuSO4) and ten to twelve drops of caustic soda shake well. After some time observe the test tube. What changes are visible on observation?we see that the colour of the mixture turned purple.Protein reacts with CuSO4&Caustic Soda than Converts into purple solution.It proves that the protein component is present in flour.
Answer» Observation: The colour of mixture turns violet. Conclusion: Protein reacts with copper sulphate and caustic soda and turns to purple colour solution. This activity shows that gram flour contains protein.

Let's do an experiment for the presence of protein in foods.Take thick aqueous solution of gram flour in a clean test tube. Add two-three drops Copper Sulphate(CuSO4) and ten to twelve drops of caustic soda shake well. After some time observe the test tube. What changes are visible on observation?we see that the colour of the mixture turned purple.Protein reacts with CuSO4&Caustic Soda than Converts into purple solution.It proves that the protein component is present in flour.

Answer»

Observation: The colour of mixture turns violet.

Conclusion: Protein reacts with copper sulphate and caustic soda and turns to purple colour solution. This activity shows that gram flour contains protein.

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