4. Use plastic wrap
Apples turn black due to exposure to oxygen in the air, causing oxidation. Therefore, you can prevent this process in a very simple way, which is to use plastic wrap.
After peeling the apples, you just need to wrap them tightly with a layer of plastic wrap. It is easier to cut the apples in half and wrap them instead of wrapping them in small pieces.
However, if the plastic wrap is slightly exposed, the peeled apples can oxidize very quickly and turn brown. Therefore, you need to be careful when using this method.
5. Use fruit preservation powder
Another tip to prevent apples from turning brown is to use fruit preservation powder. This is a mixture of citric acid and ascorbic acid, which is approved for use with food and can prevent apples from turning brown for about 8 hours.
Simply cut the apples into pieces, place them on a plate, and sprinkle about 1/2 teaspoon of the powder evenly over the surface of the apples. This powder can be easily purchased in the canned goods section of grocery stores.
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