Question

Give two examples for each of the following substances - food preservatives

Answer 1

Food preservation:

• It is the technique to prevent food spoilage, food poisoning, and microbial contamination in food.

Food preservative:

• It is a substance when added to food, is capable of inhibiting, retarding, or arresting, the process of fermentation, acidification, or other decomposition of food by the growth of microbes.

The important objectives of food preservation are:

• To prevent microbial contamination.
  To kill pathogens.
  To minimize food spoilage and food poisoning.

Examples of food preservatives are:

• Sodium Benzoate( ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{COONa}$)
• Salicylic acid(${\mathrm{C}}_7{\mathrm{H}}_6{\mathrm{O}}_3$)