What is the fundamental purpose of adding preservatives to food?

Answer

To slow down spoilage caused by microbial growth or stop undesirable chemical changes like fat oxidation.

Preservatives are intentionally added to food to inhibit microbial growth (like mold, yeast, and bacteria) or to prevent chemical deterioration such as fat oxidation, which leads to rancidity.

What is the fundamental purpose of adding preservatives to food?
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