Firstly, During the procedure the purpose of this lab was to determine and identify if there is protein in water, apple juice, vegetable oil, potato, and egg whites. This was done by using the biuret solution. So this means if the material turns purple then we know it contains the protein, but if it doesn't turn out to be purple then it doesn't contain protein. The data in this experiment shows that water, apple juice, vegetable oil, and potato all did not contain protein this is because none of them turned purple. Although, the only one that did turn purple out of the five materials because of protein was egg whites. My hypothesis was "If we use the biuret solution on five of food materials water, apple juice, and vegetable oil will
