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Why do cut or damaged fruits and vegetables spoil more quickly?
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food preservation
An overview of food preservation.
Cut or damaged fruits and vegetables spoil more quickly primarily due to the acceleration of enzymatic reactions and increased exposure to environmental factors.
When the physical structure of produce is compromised by cutting or bruising, it disrupts the internal balance of plant tissues. This damage triggers several key processes:1
- Enzymatic Browning: Physical injury exposes internal cells to oxygen, allowing enzymes such as phenolases to catalyze the oxidation of molecules like the amino acid tyrosine. This reaction produces dark pigments known as melanin.2
- Increased Ethylene Production: Damaged produce generates higher levels of ethylene, a natural hormone that accelerates the ripening and decay process.3
- Microbial Vulnerability: The breakdown of tissues and the release of cellular contents create an environment that is more susceptible to microbial contamination, as the protective outer barriers are breached.1
These reactions collectively hasten senescence and rot, significantly reducing the shelf life of the produce compared to intact specimens.132