What Are the Weakest Taste Thresholds for Sweet, Sour, and Salty Solutions?

Overview

Objectives/Goals To find the weakest taste thresholds for sweet, sour, and salty solutions. Methods/Materials Salt(sodium chloride)-10 grams, Granulated Sugar(sucrose)-10 grams, Vinegar(acetic)-2 ml, Distilled water- approximately 800 ml, Stirring rod or spoon-1, Gram balance- 1, 100 ml graduated cylinder- 1, 10 ml graduated cylinder- 1, Cotton swabs- approximately 15, Paper cups- approximately 15, Paper towels- approximately 15 Results Sugar Solution 10%= 0 people, 1%= 75 people, 0.1%= 22 people, 0.01%= 3 people Salt Solution 10%= 0 people, 1%= 2 people, 0.1%= 97 people, 0.01%= 1 person Vinegar Solution 10%= 0 people, 1%= 0 people, 0.1%= 57 people, 0.01%= 41 people, 0.001%= 2 people Conclusions/Discussion My findings from this science fair project have pointed to approval of my hypothesis. I hypothesized that my lowest taste threshold for the vinegar solution would be 0.01% and this was proven to be true. When I participated in the experiment I was able to detect the taste of the vinegar until I reached the 0.01% solution where I could no longer taste the vinegar. The lowest taste threshold documented was 0.001%, which was detected by two people. This shows me that only a very small percentage of people have this sensitive taste threshold.

Competition history

• CSEF 2007 Behavioral & Social Sciences · Entry J0307

Resources

• CSEF project summary ↗

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