Benzoic acid (BA) is a commonly used antimicrobial preservative in food and beverages, especially in carbonated beverages, as it presents its strongest antibacterial activity at pH 2.5–4.0. BA has inhibitory effects on the proliferation of bacteria and yeasts, a major cause of food spoilage.
1. Commodity name： benzoic acid
2. Name： benzoic acid
3. CAS： 65-85-0
4. Chemical： C6H5COOH
5. Molar mass： 122.1214
6. Melting： 122.13
In the food industry, benzoic acid can be used as a fixative for fruit juice drinks. It can be used as ointment with incense essence. It can also be used in edible flavors such as chocolate, lemon, orange, berry, nut and candied fruit. It is also commonly used in tobacco flavors.
Benzoic acid and sodium benzoate have the functions of sterilizing and inhibiting bacterial growth, and are low in toxicity and tasteless, so they are widely used as preservatives. In slightly acidic medium, only 0.1% benzoic acid can inhibit the growth of bacteria. Changing the pH value has a great influence on the bactericidal and bacteriostatic effects of benzoate, and its effect is obviously reduced in the reductive medium, and the best effect is obtained when the pH value is between 2.5 and 4.5.