Monk Fruit Extract vs Benzoic Acid: which is worse?
Quick answer: Monk Fruit Extract carries the heavier risk profile. Monk Fruit Extract is allowed in the EU and allowed in the US; Benzoic Acid is allowed in the EU and allowed in the US.
| Property | Monk Fruit Extract | Benzoic Acid |
|---|---|---|
| EU status | Allowed | Allowed |
| US status | Allowed | Allowed |
| Risk level | low | medium |
| Banned in | — | — |
| Restricted in | — | — |
| Category | additive | preservative |
| Where it hides | Lakanto Monk Fruit Sweetener, Bai Drinks, Purely Elizabeth Granola | Ocean Spray Cranberry Juice, Heinz Pickles, McDonald's Sauces |
What is Monk Fruit Extract?
Monk fruit extract is derived from the fruit of Siraitia grosvenorii, a melon native to southern China. Its sweetness (150–250 times that of sucrose) comes from mogrosides, particularly mogroside V, rather than simple sugars. It has been used in traditional Chinese medicine for centuries. The FDA granted GRAS status in 2010.
What is Benzoic Acid?
Benzoic acid is a naturally occurring aromatic carboxylic acid found in cranberries, prunes, cinnamon, and many berries. It is used as a preservative against bacteria, yeast, and fungi at pH below 4.5. In the body, benzoic acid is conjugated with glycine to form hippuric acid, which is excreted in urine.
Documented risks
Monk Fruit Extract: Currently considered safe with no significant adverse effects reported in human studies. Animal studies have shown mogrosides to have antioxidant, anti-inflammatory, and possible anti-diabetic properties. No carcinogenicity, mutagenicity, or reproductive toxicity has been identified. Due to its relatively recent introduction as a food additive in Western markets, long-term human safety data are more limited compared to older sweeteners. Overall, the safety profile is favorable.
Benzoic Acid: When benzoic acid (or sodium benzoate) is combined with ascorbic acid (vitamin C) in beverages, it can form benzene, a known carcinogen classified as Group 1 by IARC. This reaction is promoted by heat and light. The FDA and EFSA monitor benzene levels in beverages and have set informal guidance limits. A 1999 Lancet publication and the subsequent 2007 'Southampton study' did not directly involve benzoic acid, but sodium benzoate was included in the tested mixture. Some individuals with aspirin sensitivity may react to benzoic acid. The ADI is 5 mg/kg body weight/day.
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