Food Preservatives
These
chemicals (grouped under food
additives)
prevent food
from deteriorating and being spoiled. Thus, these
chemicals extend the shelf life of food.
Examples of preservatives include
| Type | Example |
| sugar | fruits, jam |
| salt | salted egg, salted fish |
| vinegar | fruits |
| sodium nitrite / sodium nitrate | luncheon meat, burger patties, sausages |
| benzoic acid / sodium benzoate | sauces - oyster, chilli, tomato |
| sodium sulphite | meats, dried potato products, dried fruits |
Bahan Pengawet
Bahan-bahan kimia (sejenis bahan tambahan makanan) mencegah makanan daripada merosot dan rosak. Dalam lain perkataan, bahan pengawet memanjangkan jangka (tempoh) hayat makanan.
Contoh-contoh bahan pengawet
| Jenis | Contoh |
| gula | buah-buahan, jem |
| garam | telur masin, ikan masin |
| cuka | buah-buahan |
| natrium nitrit / natrium nitrat | daging burger,sosej |
| asid benzoik / natrium benzoat | sos - tiram, cili, tomato |
| natrium sulfit | daging, kentang, buah-buahan kering |