Is Sorbitan Monostearate Vegan?
CautionSometimes. Sorbitan monostearate (also called e491) is an emulsifier that can come from either animal or plant sources. If the label does not provide a source, we recommend calling the manufacturer.
Sorbitan Monostearate and the Vegan Diet
Sorbitan monostearate, also known as E491, is a non-ionic surfactant often used as an emulsifier in food products to stabilize mixtures that would otherwise separate. It is synthesized from the reaction of sorbitol and stearic acid, which can be derived from both animal fats and plant oils. Commonly found in baked goods, margarine, and confectionery, it helps improve texture and extend shelf life.
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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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