Browned apple slices are bad

The change is due to a chemical reaction that occurs when the apples cells are broken down (by being sliced) and introduced to oxygen. If you want to keep slices looking as appealing as possible for guests or picky kids, try squeezing on some lemon juice; its citric acid will keep browning at bay. If youre not a lemon lover, hope could be on the horizon: Gilmer says varieties of browning resistant apples are currently in development, though a USDA approval could take several years.