When you cut into a piece of fruit, cells within the fruit are microscopically bruised and release an enzyme called polyphenol oxidases. This enzyme reacts with both the air and other enzymes in the fruit to cause that brown discoloration and, sometimes, off flavors.
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adventuretime60
It means that the food has been infected with bacteria which cause the physical nature of the food to change. For instance, meat may become slimy to the feel or the outer lawyer of certain foods may become pulpy, it may also smell slightly sour and change color.
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Answer:
When you cut into a piece of fruit, cells within the fruit are microscopically bruised and release an enzyme called polyphenol oxidases. This enzyme reacts with both the air and other enzymes in the fruit to cause that brown discoloration and, sometimes, off flavors.
Answer:
Sometimes it means the food has been exposed to oxygen. An example is the browning of apples. Lemon juice prevents it.