Sodium benzoate is a preservative, not an artificial sweetener. It is commonly used in food and beverage products to prevent the growth of harmful bacteria, mold, and yeast. While it can often be found in processed foods, its primary purpose is to extend shelf life, not to enhance sweetness. Sodium benzoate is especially effective in acidic foods and beverages, such as soft drinks, salad dressings, and pickles.
However, it is important to note that while sodium benzoate is generally recognized as safe (GRAS) when used within approved concentrations, concerns have been raised about its potential to cause allergic reactions in sensitive individuals. Additionally, when combined with vitamin C (ascorbic acid) in the presence of light, sodium benzoate can form benzene, a substance considered a carcinogen. For this reason, many food manufacturers are mindful of the conditions under which it is used.
As with all food additives, moderation is key, and it's always a good idea to read ingredient labels to stay informed about the substances in the foods we consume.