A very thin slice is removed from a peanut and treated with

A very thin slice is removed from a peanut and treated with Sudan III stain. Then a drop of Biuret reagent is added to the peanut slice. When you examine the peanut slice under a microscope, patches of red and blue-violet are visible. What conclusions can you draw from your examination?

Solution

Answer:

When Biuret reagent is added to peanut slices, it turns into Blue-Violet colour indicating that presence of the proteins in peanut.

When peanut is treated with Sudan III stain, slice turns into red colour indicating the presence of the Lipids.