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Macromolecules Lab Report

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In order to learn more about macromolecules, we performed an organic compound experiment. The purpose of this experiment is to find and test the presence of carbohydrates(Starch & Sugar) and proteins in different food using tested distilled water as indicators(independent variable). Food that will be tested in this experiment are cookies, milk, hot dog, pretzels, applesauce, cake mix, popcorn, and potato. My hypothesis is that if the food listed are tested for carbohydrates and proteins, then most of them with the exception of water, will be positive. Materials that will be used in this experiment are 8 regular test tubes, cookies, milk, hot dogs, pretzels, applesauce, cake mix, popcorns, potatoes, tap water, 500ml pyrex measuring cup, Benedict’s solution, Biuret solution, and Iodine solution. …show more content…

If the type of food is solid, then break it down into small little pieces. Then apply 5 drops of Biuret solution into each regular test tubes. Gently mix the substances within the test tubes and record their color. If the color of the food becomes blue-violet or pink, then there are proteins. To test for Iodine solution for starch, first empty and wash the test tubes from the previous solution and refill each tubes with food. Like Biuret solution, apply five drops of Iodine solution into each tubes and gently mix it. If the substance becomes blue-black, then starch is

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