Sulfites

Definition

Sulfites are chemical compounds containing the sulfite ion (SO3^2-) that are used as preservatives to control microbial growth in various products. They inhibit the growth of bacteria, fungi, and yeast by disrupting their metabolic processes.

5 Must Know Facts For Your Next Test

1. Sulfites are effective in preventing spoilage in foods and beverages by inhibiting microbial growth.
2. They function by interfering with the cellular respiration process of microorganisms.
3. Common applications include preserving wine, dried fruits, and certain medications.
4. Sulfite sensitivity can lead to allergic reactions in some individuals, making it essential to monitor their concentration levels in consumables.
5. The use of sulfites is regulated and must be indicated on product labels when concentrations exceed specific thresholds.

Review Questions

• How do sulfites inhibit the growth of microorganisms?
• In what types of products are sulfites commonly used as preservatives?
• Why is it important to label products containing sulfites?

Related terms

Preservatives:

Substances used to prevent decay and spoilage caused by microorganisms.

Antimicrobial Agents:

Compounds that kill or inhibit the growth of microorganisms.

Food Additives: Substances added to food to maintain or improve safety, freshness, taste, texture, or appearance.