Why does food lose nutritional value after being processed?
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Many nutrients are intentionally removed during processing because they have poor flavor or decrease shelf life. A simple example is peeling an apple when there are useful nutrients in the apple peel. Or soaking or boiling anything in water will result in the water absorbing nutrients which are often lost when the water is discarded.
Many other nutrients are destroyed by the processing itself. E.G, Heat, acid, or exposure to air can all easily destroy many nutrients.
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