Benzoic acid

Definition

Benzoic acid is a colorless crystalline solid and a simple aromatic carboxylic acid. It is widely used as a preservative in food and beverages due to its antimicrobial properties.

5 Must Know Facts For Your Next Test

1. Benzoic acid inhibits the growth of mold, yeast, and some bacteria by disrupting their cellular metabolism.
2. It is most effective in acidic conditions (pH 2.5-4.0) where it can easily penetrate microbial cell walls.
3. Commonly used concentrations of benzoic acid in food preservation range from 0.05% to 0.1%.
4. While generally recognized as safe, excessive consumption of benzoic acid can lead to health issues such as irritation of the digestive tract.
5. Benzoic acid is often combined with other preservatives like sorbic acid for synergistic effects in controlling microbial growth.

Review Questions

Related terms

Preservative: A substance added to products to prevent spoilage by microbial growth.

Sorbic Acid:

An organic compound used as a preservative to inhibit molds, yeasts, and fungi.

Antimicrobial Agent: A substance that kills or inhibits the growth of microorganisms.