Question

The effective pH range for benzoic acid used as a chemical preservative in milk and milk products is:

• A. 2.5–4.0
• B. \( <5.0\)
• C. 4.0–5.0
• D. 2.0–3.0

Hint:

Use benzoic acid in acidic food systems to maximize its preservative effectiveness.

Answer 1

The Correct Option is A

Benzoic acid effectively preserves substances in acidic conditions, specifically within the pH range of 2.5–4.0. At this pH, benzoic acid predominantly exists in its undissociated form, which is more potent at inhibiting microbial growth.