Scientific research Independent Project
taste threshold Practical Statement
The lesser the concentration of the solution, the lighter its taste become. The result will probably be subjective. Aim
The aim is usually to determine a precise common threshold of preference for sweetness, sourness and saltiness simply by determine what may be the lowest attentiveness of a answer that keeps having perceptible taste for salt, sugar and vinegar. Risk Assessment
1 . Harm from damaged glass cyndrical tube. | Have on safety baseball glove, handle cyndrical tube carefully. | Water spills on the floor -> slippery floor. | Handle container carefully, wear safety boots. |
2. table sugars (sucrose)
5. water ( distilled)
* gram range
* 95 mL graduated cylinder
2. 10 mL graduated cyndrical tube
* notebook computer & pen
-- The alternatives should be flavor by more than 1 person for more accurate results. - Make a data table in your notebook just like the one below.
Substances| 10%| 5%| 1% | zero. 1%
Stand sugar (sucrose)| | | |
Salt| | | |
Vinegar| | | |
1 . Measure 720ml of distilled water and pour it into a cup. Add 80g of sugar. Stir until dissolved. This gives you a 10% (weight/weight) sucrose solution. Be aware any other findings that you produce. 2 . Wash your mouth with water and wipe your tongue dried with a clean paper hand towel. 3. Drop a clean ear bud into the 10% sugar option and taste it together with the tip of your tongue. If you can taste the sweetness, put a " +вЂќ inside your data table for 10% sucrose. Note any other findings that you produce.
4. Now assess out 80В ml of the 10% sucrose solution and dump it into a clean newspaper cup. Put 720ml of distilled drinking water and mix. (Use a clean stirrer, or else completely rinse and dry the prior stirrer, so that you don't carry over focused solution in the dilute remedy. ) This will likely give you a 1%...
References: 1 . Ideas by " CALCULATING YOUR PREFERENCE THRESHOLDвЂќ: http://www.sciencebuddies.org/science-fair-projects/project_ideas/HumBio_p013.shtml