Food tests

• Test for Sugars by adding Benedict’s reagent and heat in a water bath, causing a brick- red precipitate
• Test for Starch by adding Iodine. If Starch is present, sample changes from browny-orange to blue-black
• Test for lipids by adding ethanol and shaking. Then, add to water and a milky precipitate forms
• Test for Proteins by adding potassium hydroxide to turn the solution alkaline. Then, add copper sulfate If proteins are present, solution turns purple