Is Calcium Hydroxide Pescatarian?
CautionSometimes. Calcium hydroxide (e526) is usually derived from limestone, but can be derived from animal sources like sea shells as well.
Calcium Hydroxide and the Pescatarian Diet
Calcium hydroxide, often referred to by its E number, E526, is a chemical compound with the formula Ca(OH)2. It is produced by reacting calcium oxide with water and is commonly used in the food industry as a firming agent, acidity regulator, and processing aid. This compound is typically derived from limestone, although it can also be sourced from sea shells, which may be relevant for those following specific dietary restrictions like pescatarian diets.
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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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