High purity food grade calcium citrate is a calcium salt of citric acid manufactured to meet food and supplement safety standards, typically with low levels of heavy metals and other impurities. It is widely used as a calcium fortifier and as a supplement form that can be taken with or without food.
What is high purity food grade calcium citrate used for?
It is added to beverages, dairy alternatives, cereals, and dietary supplements to boost calcium content. Because it is less dependent on stomach acid for absorption than calcium carbonate, it is often chosen for people with low stomach acid or those taking acid-reducing medications. Food-grade material must also meet limits for contaminants such as lead and arsenic.
How is purity defined for food grade calcium citrate?
Purity is usually described by assay content (the percentage of calcium citrate) and by limits on heavy metals, moisture, and microbial contamination. Specifications often reference recognized food-chemical monographs, such as those published by JECFA or the FCC, along with regional food regulations. Buyers should request a certificate of analysis for each lot to confirm these values.
How do you choose a reliable calcium supplier?
Look for a calcium manufacturer with documented quality systems, consistent particle size, and transparent testing. A dependable calcium supplier should provide batch-specific certificates of analysis, allergen and GMO statements, and clear traceability. Many buyers also evaluate suppliers in China, where a large share of the world's calcium salts is produced, by auditing facilities and reviewing regulatory registrations.
What should you check before buying?
- Assay and impurity limits on the certificate of analysis
- Compliance with target-market food regulations
- Particle size and solubility for your application
- Packaging, shelf life, and storage conditions
Matching these details to your formulation needs helps ensure consistent results and regulatory compliance.
常见问题
Is calcium citrate better absorbed than calcium carbonate?
Calcium citrate is generally well absorbed and does not require stomach acid for absorption, so it can be taken with or without food. Calcium carbonate depends more on stomach acid and is best taken with meals. Individual needs vary, so consult a healthcare professional.
What does 'food grade' mean for calcium citrate?
Food grade means the material meets safety and quality standards for use in foods and supplements, including limits on heavy metals and contaminants. It is typically supported by a certificate of analysis and compliance with recognized food-chemical specifications.
How should high purity food grade calcium citrate be stored?
It should be kept in a cool, dry place in well-sealed packaging to protect it from moisture and contamination. Follow the supplier's recommended shelf life and storage conditions, and rotate stock to maintain quality.
