green tea soap

Is this a good idea for a science project?
I’m looking to see the changes of a banana if i soaked it in different liquids.
My liquids are water, factory made green tea, and glass cleaner. i want to see which banana will retain it’s properties the most. I will soak it for an hour. Of course I will not use the same banana for all liquids, but i will cut them into 2 cm slices, each in it’s own liquid. I will do two trials. Before the trial, I will (of course wash my hands, but also) feel it for any significances such as firmness and how sticky the inside is. After it is soaked, i will do the same.
And my hypothesis is : If a banana is soaked in tea, dish soap, and glass cleaner and then compared to a banana soaked in water, then the banana soaked in tea will be mostly similar to the banana soaked in water because, it’s pH levels are closer to nuetral.
Also, can anyone correct me on this.
I get the impression that I am answering questions not from USA. Bananas in USA have fairly thick skins. I do not believe you will see much difference after just one hour, except for skin color possibly.
I suggest you cut the slices much thinner.
Also, glass cleaner (in the USA) is composed of surfactants, emulsificants, and solvents (such as isopropyl alcohol) as well as water and bases such as ammonia or NaOH or KOH (or bicarbonates).
And green tea contains tannins which are not related to pH.(directly)
I suggest you find better examples of acids and bases than you mention. Ammonia often also has surfactants in it. the best experiment would be to keep your test systems as simple as possible.
Vinegar is an acid. Bases such as lime, slaked lime, TSP and some drain cleaners (maybe whitewash if you are in India?) can also be used. Be careful with these materials they can hurt your skin or eyes.
Finally you have to demonstrate that your glass cleaner (ammonia?) is different in pH. You shouldn’t just assume it. And also that the pH of the tea is similar to water.
The problem I have with your hypothesis is: it is obvious that a dilute water solution is (in general) more similar to “pure” water than a more concentrated solution. Unless one of your solutions has a very large effect on the banana, it will be difficult to conclude anything about the effects. Be sure to wash off any residue before you test them.. Perhaps you should compare sugar water, salt water, and water with different pHs. Using strong acids and bases is more dangerous, but will actually require lower concentrations to produce an effect.
I also suggest a much longer soak. Also, it is possible that cohesiveness will be a better measure of any changes in properties than “stickiness”. But this will still not be easy to measure. You may have to find a test that shows a difference and you may have to use many more than two slices for each soak.
Green Tea Soap Batch
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