Food preservatives are substances that are added to food to prevent or delay spoilage, microbial growth, and chemical changes caused by chemical reaction. They are used to extend the shelf life of products and maintain their quality and safety.

For example, Table salt (NaCl) is an excellent natural food preservative from ancient times used for preserving raw mango, meat and fish etc.

Any two points those should be remembered while using food preservatives are:

1. Safety and Regulation: Use only approved food preservatives that comply with safety regulations, following recommended guidelines to avoid health risks.
2. Labeling and Consumer Awareness: Ensure clear labeling of preservatives on food products to help consumers make informed choices and understand their role in food preservation.