Why does vinegar pickle vegetables?
Show answer & explanation
Answer: Acetic acid prevents bacteria
Acetic acid prevents bacteria ✓ — Correct! Vinegar contains acetic acid (pH ~2.5), creating an acidic environment where most spoilage bacteria can't survive or reproduce. The acid also firms vegetable texture by strengthening pectin. Salt in brine draws out water, further inhibiting microbial growth. Pickles last months because bacteria can't grow in acidic conditions!
Vinegar dissolves cell walls — Wrong. Vinegar doesn't dissolve cells—it preserves them! The acid actually helps maintain texture by cross-linking pectin.
Fermentation creates alcohol — Wrong. Pickling with vinegar doesn't ferment or create alcohol. That's fermented pickles (lacto-fermentation), a different process. Vinegar pickles use existing acetic acid.