How To Keep Apple Slices From Turning Brown. We tried all three methods letting the apple slices soak for one hour. Using Salt to Prevent Apples From Browning Sodium chloride or common table salt is another chemical that can interfere with oxidation.
Lemon juices high acidity and low pH deactivates the enzyme that causes browning. Soak them in one of these solutions for 5 minutes. They were not quite as brown as the slices left out at room temperature but they had changed in color slightly.
Heres my final tip.
You can make them much more appealing even if they havent turned brown. It also works the best in keeping the flavor and crisp texture of the fruit intact. After the time was up the apples soaked in honey water had browned the most. Just use a teaspoon or two to coat the apple slices and they will retain their natural color for a longer time.