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 is effective as a preservative in acidic conditions, specifically within the pH range of 2.5–4.0. At this pH, benzoic acid remains predominantly in its undissociated form, which is more effective in inhibiting microbial growth.