The primary function of preservatives is to extend the shelf life of food, pharmaceuticals, and other products by preventing the growth of microorganisms and oxidation, thereby protecting the safety and efficacy of the products.
Delaying food spoilage: Preservatives effectively inhibit the growth of bacteria, yeast, and mold. For example, adding potassium sorbate to bread prevents mold growth, thus extending the bread's shelf life.
Extending the shelf life of pharmaceuticals: Adding preservatives, such as sodium benzoate, to pharmaceuticals extends their shelf life, ensuring they remain stable and uncontaminated during storage.
Preventing oxidation in cosmetics: Commonly used preservatives in cosmetics, such as parabens, prevent the oxidation of oily components, thus extending their shelf life.
Protecting industrial products: In industrial production, preservatives are also widely used in latex paints, wood treatments, and other fields to prevent products from being attacked by microorganisms during storage and use.
