Sulfites

Definition

Sulfites are a group of sulfur-based compounds commonly used as preservatives in food and beverages to prevent spoilage and discoloration. They can trigger respiratory symptoms in sensitive individuals, particularly those with asthma or other pulmonary conditions.

5 Must Know Facts For Your Next Test

1. Sulfites are often found in dried fruits, wines, and processed foods.
2. Individuals with asthma may experience bronchoconstriction when exposed to sulfites.
3. Sulfite sensitivity can cause symptoms such as wheezing, shortness of breath, and coughing.
4. The FDA requires labeling of sulfites on packaged foods if they exceed 10 parts per million (ppm).
5. Sulfite reactions are more common in adults than children.

Review Questions

• What types of food commonly contain sulfites?
• Why are people with asthma advised to avoid sulfites?
• What labeling requirements does the FDA have regarding sulfites in foods?

Related terms

Bronchoconstriction: The narrowing of the airways in the lungs due to the tightening of surrounding smooth muscle.

Asthma: A chronic respiratory condition characterized by episodes of airway inflammation and obstruction.

Food Preservatives: Substances added to food to prevent spoilage caused by bacteria, molds, fungi, or yeast.