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Analysis of Tropicana Orange Juice for Calcium & Vitamin C

Analysis of Tropicana Orange Juice for Calcium & Vitamin C. Kate Penrod & Ashley Kimble. Objective. Calculate Calcium content Calculate Vitamin C content Compare to Tropicana’s claims. Importance of Experiment. Calcium Most abundant mineral Regulates cellular processes Vitamin C

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Analysis of Tropicana Orange Juice for Calcium & Vitamin C

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  1. Analysis of Tropicana Orange Juice for Calcium & Vitamin C Kate Penrod & Ashley Kimble

  2. Objective • Calculate Calcium content • Calculate Vitamin C content • Compare to Tropicana’s claims

  3. Importance of Experiment • Calcium • Most abundant mineral • Regulates cellular processes • Vitamin C • Reducing agent • Antioxidant

  4. Failed Procedures • Procedure 1 • No filtration • No dilution • Procedure 2 • Filtration through glass wool • Dilution with water • Procedure 3 • Filtration through glass wool • Dilution with water • Centrifuge

  5. Procedure • Procedure 4 • Filtration through glass wool • Dilution with HCl • Centrifuge

  6. EDTA Titration of Tropicana Calcium Plus D

  7. EDTA Titration of Tropicana Calcium Plus D (Spiked)

  8. Iodimetric Titration of Tropicana Calcium Plus D

  9. Iodimetric Titration of Tropicana Calcium Plus D (Spiked)

  10. Iodimetric Titration of Tropicana Regular

  11. Iodimetric Titration of Tropicana Regular(Spiked)

  12. Discussion & Conclusion • Must simulate digestion • Particles interfere with endpoint • 6% DV Magnesium • Vitamin C particles potentially large • Vitamin C spike?

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