Ingredient
potassium benzoate
What is potassium benzoate?
Potassium Benzoate is a chemical preservative, commonly used to prevent the growth of yeasts, molds, and some bacteria in food and beverages. It is the potassium salt of benzoic acid and is typically used in acidic foods such as soft drinks and fruit juices.
This preservative is favored for its effectiveness in inhibiting microbial growth without significantly altering the taste, color, or aroma of a product. The safety of potassium benzoate at approved levels is generally recognized, although it can form benzene, a known carcinogen, when combined with ascorbic acid (vitamin C) under certain conditions. The risk is considered low when used as directed.
When reading labels, note that potassium benzoate will usually appear in sodas, fruit-flavored drinks, and other acidic food products. It's approved for use by food safety authorities but should be consumed in moderation due to its potential to form benzene.
Commonly found in: Soft drinks, Fruit juices, Salad dressings, Condiments, Jellies, Pickled products
What to watch
- May form benzene when combined with ascorbic acid in certain conditions.
- Regulated to ensure levels do not reach unsafe thresholds in foods.
Benefits
- Effectively prevents growth of yeasts and molds in product formulations.
Approved by the FDA for use as a preservative in food and beverages, provided it is used within prescribed limits.
Research shows that potassium benzoate can form benzene in combination with vitamin C, though the occurrence is rare when used properly.
Potassium benzoate is a synthetically produced compound, making it suitable for vegan diets.
Sources: Food Additive Status List
Scout's take
Potassium benzoate is used as a preservative, but some consumers prefer to avoid artificial preservatives due to potential health concerns.
More from Scout's analyses
Chemical preservative — same benzene concerns as sodium benzoate when combined with citric acid present in the formula.
from the analysis of Bloom Sparkling Energy DrinkPotassium benzoate is a preservative that helps prevent spoilage and microbial growth.
from the analysis of Splash Blast SPLASH WATER BEVERAGEFound in 3 products
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