Question

What are the necessary conditions for the process of browning in apples ?

Answer 1

1.Apple should be cut.
2.It should be uncovered.
3.It should be left in the air for some time.
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Answer 2

When an apple is cut (or bruised), oxygen is introduced into the injured plant tissue. When oxygen is present in cells, polyphenol oxidase (PPO) enzymes in the chloroplasts rapidly oxidize phenolic compounds naturally present in the apple tissues to o-quinones, colorless precursors to brown-colored secondary products.
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