Apple is a nutritious, healthy fruit and is often chosen by housewives as a dessert for the family. However, if you do not know how to cut and preserve apples, just a few minutes after peeling, they have “deteriorated” and become dark. So how to keep apples as fresh and beautiful as when they were peeled? Please refer to 3 tips to preserve apples properly in the article below!
Why do apples often darken after peeling?
Apples, pears, and bananas are fruits that contain large amounts of an enzyme called “polyphenol oxidase”. When you peel an apple, the enzyme is exposed to air and produces a new compound called o-quinone. By nature, o-quinones are not brown, but when they react with amino acids and oxygen in the air, they “accidentally” produce melanin (the substance containing the brown pigment).
The common name for this process is “food oxidation” or “enzymatic browning”. They not only change the color of food, but sometimes also change the taste and nutritional value. Although these changes are not good, some foods often use this process to create a special flavor such as coffee, tea or dried fruit.
3 tips to keep apples from turning brown after peeling
Here are 3 tips to preserve apples from darkening, still delicious as new even after peeling many hours before.
1. Soak apples in lemon juice
The simplest way is that you can spray a little lemon juice on the surface of apples or soak apples in a bowl of water diluted with lemon juice in a ratio of 1: 1. Lemon juice contains citric acid, an effective antioxidant that prevents the darkening of apples. However, due to the sour taste, this method is usually only applied to sweet apples. In addition, you can completely replace lemon juice with pineapple juice or soda because they also have the same effect.
2. Sprinkle salt on apple pieces or soak with salt water
Have you ever worried about the bruises on apples that can be unsightly? Then try sprinkling some salt on top of the apple plate. Salt is a natural preservative and is very effective in preserving apples from browning for quite a long time. Be sure to sprinkle with just the right amount of salt, though, or your apples will taste salty and inedible.
3. Use food wrap
If the above 2 ways make you feel a bit… troublesome, then use food wrap right away. You just need to wrap the apple as tightly as possible, avoid exposing or letting air come into contact with the apple. This method is best used only with sliced apples rather than chopped pieces. At the same time, because it is difficult to completely remove the air, this is not the most effective way to preserve apples.
These simple tips will help you preserve apples from turning brown after peeling. However, these ways will only help the apple not to darken within a few hours and cannot last forever. Therefore, it is better to eat where the apples are peeled to keep the freshest flavor to the fullest.