Question

Why don't apples turn brown in Vinegar?

Answer 1

Because the vinegar is brown and the apple is so light that the apple just turn that way.

Answer 2

Lemon juice, Vinegar, clear soda will all prevent food from turning brown quickly. These liquids are acidic, so they will lower the pH of the food surface. Olive oil, will also prevent food from browning, but is less effective than the acids. Water and salt water will also slow the browning of foods.