leave it out exposed to the air, some apples dont brown, pick one that does brown easily
you can prevent an apple from browning by adding lemon juice to it
If you keep the cut apple under water if will stop the oxygen in the air to react with the apple and no browning will occur.
Yes, the browning of an apple core is a redox reaction. This process involves the oxidation of the compounds in the apple, such as polyphenols, which leads to the formation of brown pigments.
An apple called Arctic Apple has been genetically modified to be non-browning.
The vinegar will cause more browning on a red apple rather than a green apple because i did it for my science fair! and that was the results.
chemical reaction.
Browning of the apples is caused by the oxidation of the enzyme phenol oxidase:phenol oxidase + oxygen---------------melanins
Lemon juice preserves the apple and keeps it from oxidizing. People use it on apple slices to prevent them from browning. It does not make them rot.
If they are sitting out, not in a fridge, I would say about 30 minutes. If they are in the fridge, they have about double that time. To keep your apples from browning you can put lemon juice on them and this will delay the browning process.
Spritz or soak the pieces with lemon juice.
a tightly sealed plastic baggie should do the trick for a day or so
Browning of apples is due to the creation of brown pigments through enzymatic polymerization of polyphenolic (normally colorless) apple compounds.