Quantifying the amount of glucose in a potato
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This document describes an experiment to quantify the amount of glucose in a potato. Researchers prepared various concentrations of glucose solutions and a potato solution by crushing potato in water. They added sulfuric acid and potassium permanganate to the solutions and recorded the time it took for the color to disappear, indicating the relative concentrations of glucose present. The results section shows the reaction times for each solution, with lower times correlating to higher glucose concentrations.
Quantifying the amount of glucose in a potato
- 1. Quantifying the Amount of Glucose in a PotatoBerylliumJOSE, WilliardDAROYA, RangelUTANES, KerwinELATICO, AdamTANCHULING, DiegoMAGNO, Gian
- 2. IntorductionThere are a lot of ways to determine the glucose concentration of a solution…These include the use of special indicators, titration, or osmosisBut for this particular experiment, a different protocol has been used.
- 3. HOW DID WE DO IT??!! :O :O :O
- 4. Preparation of Solutions100mL of 1 M of sulfuric acid125 mL of 0.0025316 M of Potassium permanganateGlucose solution (1%, 2%, 4%, 8%)Potato Solution (approximately 0.5 g of crushed potato in 50mL of water)
- 5. Preparation of SolutionsFig 1. Adding sulfuric acid in distilled water.Fig 2. Stirred potassium permanganate in distilled water.
- 6. Preparation of SolutionsFig 3. Weighing of solid glucose to be used in solutionsFig 4. Adding distilled water to solid glucose.
- 7. Preparation of SolutionsFig 5. Weighing of potato slices.Fig 6. Three of approximately 0.5 grams of potato slices.
- 8. Preparation of SolutionsFig 7. Crushing 0.5 grams of potato slice using mortar and pestle.Fig 8. Placing crushed potato in Erlenmeyer flask.
- 9. Preparation of SolutionsFig 10. Three potato solutions, four glucose solutions, and a potassium permanganate solutionFig 9. Adding distilled water to crushed potato.
- 10. Glucose and Potato SolutionsFive milliliters of sulfric acid was added using syringeAfter adding sulfuric acid, two milliliters of potassium permanganate was added (syringe)Time was recorded right after potassium permanganate was added until color disappears from solution
- 11. Adding Sulfuric AcidFig 11. Adding sulfuric acid to glucose solution.Fig 12. Adding sulfuric acid to potato solution.
- 12. Adding Potassium PermanganateFig 13. Adding potassium permanganate in glucose solution while timing.
- 13. RESULTS!!!!
- 14. ResultsThe following slide shows the reaction times taken by the solutions:
- 15. Results
- 16. Discussion
- 17. Sources