Nitrites

Definition

Nitrites are inorganic compounds containing the nitrite ion, NO2-. They are often used as preservatives and antimicrobial agents in food and other industries.

5 Must Know Facts For Your Next Test

1. Nitrites can inhibit the growth of certain bacteria by interfering with their metabolic processes.
2. In high concentrations, nitrites can be toxic to humans and animals.
3. Common applications of nitrites include food preservation, especially in cured meats.
4. Nitrites work by converting to nitric oxide under acidic conditions, which then reacts with microbial DNA and proteins.
5. The use of nitrites is regulated due to potential health risks, such as the formation of carcinogenic nitrosamines.

Review Questions

• What is the primary function of nitrites in microbial control?
• How do nitrites inhibit bacterial growth at a molecular level?
• What are some safety concerns associated with the use of nitrites?

Related terms

Antimicrobial Agents: Substances that kill or inhibit the growth of microorganisms.

Nitrosamines: Carcinogenic compounds formed from the reaction between nitrites and amines.

Preservatives: Substances used to prevent spoilage and extend shelf life of products by inhibiting microbial growth.