You may be surprised at the number of ways there are to keep apple slices from turning brown, all are quite simple, but there is only one way to keep apples from browning that requires no effort at all! First we need to know what causes apples to brown and then how we can keep apples from turning:Pick an apple off the tree and it’ll last a few weeks before it starts to rot and turn soft, but 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”. There are millions of tiny cells inside each apple. One way apple cells get exposed to oxygen is by cutting the apple open. This damages the wall that protects each cell and exposes its contents to the oxygen in the air. Bruised apples also show signs of oxidation. When an apple gets damaged, if you drop one for example, many of the cell walls inside the… Read full this story
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