Sodium benzoate

Definition

Sodium benzoate is a chemical compound widely used as a preservative in food and pharmaceuticals. It inhibits the growth of bacteria, yeast, and fungi by altering their internal pH.

5 Must Know Facts For Your Next Test

1. Sodium benzoate is effective in acidic conditions with a pH less than 7.
2. It works by disrupting the microbial cellular respiration process.
3. Commonly used concentrations are between 0.1% to 0.5% in food products.
4. It is often combined with other preservatives for enhanced antimicrobial efficacy.
5. Sodium benzoate can convert to benzene, a known carcinogen, under certain conditions, such as high heat and presence of vitamin C.

Review Questions

Related terms

Benzoic Acid:

An organic acid that serves as the precursor to sodium benzoate.

Potassium Sorbate:

A preservative used to inhibit molds and yeasts in many foods.

Parabens: A group of synthetic compounds used as preservatives in cosmetics and pharmaceuticals.