What organic compounds are found in the cells of apples, and when these are exposed to oxygen in the air, for example through slicing, the oxygen causes reaction?
Phenols
The correct answer is Phenols.
Common phenolic compounds found in apples include catechins, epicatechins, procyanidins, chlorogenic acid, and phloretin derivatives. These specific compounds are all types of phenols. When the apple is cut, the enzyme PPO acts on these various phenolic substrates, leading to the browning reaction. Different apple varieties may have different types and concentrations of these phenolic compounds, affecting how quickly and intensely they brown.
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