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The lower the pH, the more acidic a substance is. Citric acid is used to prevent apples from browning once they are cut. Therefore, an acid, low pH prevents browning. This is done by keeping oxygen from reacting with the apple with the barrier created by the citric acid.

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12y ago

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How does the pH value affect the rate of browning?

The pH value can affect the rate of browning in foods because enzymatic browning, which causes the brown color change, is influenced by the acidity of the environment. An increase in pH can slow down enzymatic browning reactions, while a decrease in pH can accelerate them. Maintaining pH levels appropriate for the food product can help control the rate of browning.


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