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Impact of Brewing Conditions on Caffeine Concentration in Single Cup Coffee Packets

This study investigates how different brewing methods affect the caffeine concentration in single cup coffee packets. By employing three distinct brewing techniques, we maintained constant conditions to isolate the impact of convection. Our results demonstrated that stirring coffee significantly increases caffeination, with undisturbed brewing yielding doubled caffeine levels. The findings highlight the inefficacy of color as a caffeine indicator, emphasizing the importance of brewing techniques in achieving desired caffeine concentrations.

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Impact of Brewing Conditions on Caffeine Concentration in Single Cup Coffee Packets

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  1. Caffeine Transport in Single CupCoffee Packets Eric Anderson Alana Warner-Tuhy

  2. Introduction • Reason for Study • Experimental Parameters • Results • Conclusions • References

  3. Justification for Study • Warning on the back of coffee packet • How much does brewing conditions affect the final caffeine concentration?

  4. Experimental Parameters • Three different brewing methods • No interference • Dunk bag in water, as per directions • Continuously stir • Other than convective conditions, all other parameters were constant

  5. Purification and Extraction

  6. Method 1 Results

  7. Color Comparison

  8. Caffeine Conc. Comparison

  9. Final Caffeine Comparison

  10. Results 5 Minutes • Any method will work 10 Minutes • Double the caffeine by leaving coffee undisturbed • 4 times the caffeine by continuously stirring coffee

  11. Conclusions • The convective component greatly affects the final caffeine concentration • Color is not an adequate indicator of caffeine concentration

  12. References • Spiro, M., Lam, P., Food Chemistry, 1995 , vol. 54, p393-396.

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