Is Polyoxyethylene (40) Stearate Vegetarian?
CautionSometimes. Polyoxyethylene is made from ethylene oxide and stearic acid. It may be of animal origin depending on the manufacturer.
Polyoxyethylene (40) Stearate and the Vegetarian Diet
Polyoxyethylene (40) stearate, also referred to as E431, is a synthetic surfactant and emulsifier used in various food and cosmetic products. It is composed of stearic acid and ethylene oxide, where the stearic acid component can be derived from either plant or animal sources, making its suitability for vegetarians dependent on the specific source used by the manufacturer. This ingredient helps stabilize emulsions, improving the texture and consistency of products.
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- Evidence-based. Diet compatibility ratings are compiled from peer-reviewed nutrition guidance, dietary association recommendations, and ingredient composition data.
- Continuously updated. Our ingredient database is refreshed as new sources and product data become available.
- Transparent uncertainty. When an ingredient's safety depends on serving size, preparation, or sub-ingredients, we mark it “caution” rather than forcing a binary answer.
- Not medical advice. Ratings are general guidance. Always consult a registered dietitian for personalized recommendations.
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