Oxidation causes apples to turn brown. The browning you see is a result of the polyphenol oxidase (PPO) enzymes oxidizing.
Apples turn brown because of Acid Oxidation. When the acids of the fruit are exposed to oxygen for a prolonged period of time, the fruit begins to "break down" or decompose the acids. When this happens the oxidation of the acids begin releasing a Byproduct which is what turns your apples brown.
A simple way to prevent apples from turning brown is to coat them with lemon, lime, or sugar. This will not stop them from turning brown but delay the process enough so they don't look nasty.
Basically because the apple contains Iron. The iron inside the apple rusts when it comes in contact with air and that's why it turns to that brownish color.
Fresh cut apples turn brown when iron-containing chemicals inside apple cells react with oxygen in the air. We see this every day when iron objects rust, or when scabs on cuts turn brown.
The chemical reaction is called "oxidation", and the enzyme that regulates oxidation in apples is called "polyphenol oxidase" (PPO), also known as "tyrosinase".
Oxidation - air...... Lemon juice helps retard the apple's reaction to air, or try to remove all the air from the storage bag. Even a few minutes in contact with air will cause the fruit to start to turn brown.
This is the same thing that causes brown spots in apples when you drop them. The easiest way to prevent browning is to put the sliced apples in water so that the enzyme does not have access to oxygen. You can also heat the apples to denature the enzyme.Oxidation causes apples to turn brown. The browning you see is a result of the polyphenol oxidase (PPO) enzymes oxidizing.
im going to give you an idea. Aim: To find out what makes apples go brown.
It makes it turn brown
Well if you put it on your apples it will make your apples not go brown...you know how if you let your apples sit for a long time once you have taken a bite? Well, then the lemon juice makes it not get that brown stuff...and if you are making apple pie and cut up the apples then put a little lemon juice to make it not be brown.
badness
Apples go brown in the presence of oxygen. Boiling means that the apple doesn't come in contact with oxygen.
If you leave them out and they rot yes
for an orange, it makes the juice bubbles pop. For banana's, it makes them VERY brown, and apples, really soft
I did an experiment with 4 different types of apples. They were Royal Gala, Red Delicious, Pink Lady and Granny Smith apples. If you cut the apples into quarters the Royal Gala apple goes brown in 2 hours and 5 minutes, the Red Delicious apples go brown in 4 hours and 20 minutes and the Pink Lady apples go brown in 6 hours and 29 minutes. Granny Simth takes 6 and a half hours.
To keep apples from turning brown add either powdered ascorbic acid or lemon juice and water. Cover the apples with plastic wrap placed directly on top of the apples.
Red apples have a larger anus to let out poo.
the sun burns it and turns brown
because of its sugars