Calcium Citrate Fortification Grade E333
Calcium Citrate Fortification Grade is a food-grade calcium source designed for manufacturers that need mineral enrichment, calcium nutrition positioning, premix-ready handling and reliable documentation for fortified food and beverage applications. It is especially relevant for formulas where calcium contribution, citrate compatibility, sensory profile, particle-size control, regulatory status and batch traceability must be managed together.
Global Food Additives supports food manufacturers, beverage producers, dairy and plant-based drink formulators, cereal and flour processors, nutritional-powder brands, premix blenders and ingredient distributors with Calcium Citrate Fortification Grade sourcing, supplier comparison, document collection, specification review and export-ready quotation coordination.
Product identity
| Product | Calcium Citrate Fortification Grade |
|---|---|
| Base ingredient | Calcium Citrate |
| Common additive reference | E333 / INS 333 |
| CAS / identity | 813-94-5 |
| Chemical description | Calcium salt of citric acid |
| Category | Fortification Nutrients |
| Primary function | Calcium fortification / mineral enrichment / nutritional premix ingredient |
| Secondary functions | Acidity-regulation support, mineral balance, citrate functionality and mild buffering where technically suitable |
| Typical form | Fine powder, micronized powder, granule, premix-ready grade or customer-specified food-grade form |
| Commercial focus | Elemental calcium control, low contaminant profile, particle-size consistency, clean sensory profile, lot traceability and complete documentation |
Application fit
Potential use areas must be checked against destination-market rules, nutrient-claim rules, customer specifications and final product design. Typical technical review areas may include:
- Calcium-fortified beverages and powdered drink mixes
- Dairy drinks, yogurts, dairy desserts and fermented dairy products
- Plant-based milk alternatives and high-protein drinks
- Breakfast cereals, flour systems and grain-based fortified foods
- Nutritional powders, meal replacements and sports-nutrition products
- Gummies, chewable tablets, sachets and compressed formats
- Infant foods, medical foods and special-nutrition products only where permitted and specified
Technical role in food fortification
Calcium Citrate Fortification Grade is selected when the manufacturer needs a controlled calcium source that can support nutrition targets while maintaining acceptable taste, texture, processing performance and label compliance. Unlike purely functional acidity regulators, fortification-grade Calcium Citrate is evaluated primarily by elemental calcium contribution, impurity profile, microbiological quality, particle-size distribution, dispersion behavior and compatibility with the finished product matrix.
Calcium Citrate is only sparingly soluble in water, so formulation success depends strongly on whether the finished product is designed as a clear solution, cloudy beverage, suspension, emulsion, dairy matrix, dry powder, tablet, gummy or cereal product. In liquid systems, the main technical risks are sedimentation, chalkiness, grittiness, pH drift and mineral-protein interaction. In dry systems, the main risks are segregation, poor flow, dusting, caking and uneven nutrient distribution.
Functional benefits to evaluate
- Reliable calcium contribution for fortified food and beverage systems
- Citrate-based mineral profile with relatively mild sensory character
- Lower alkalinity impact than some carbonate-based calcium sources
- Useful performance in dry premixes, tablets, gummies and powder systems
- Compatibility with selected dairy, plant-based and nutritional matrices
- Potential buffering and mineral-balance support in acidified products
- Premix-ready particle-size options for industrial blending
- Export-friendly dry format with stable packaging and batch traceability
Key formulation variables
| Elemental calcium | Confirm calcium percentage and calculation basis before setting dosage and nutrition claims. |
|---|---|
| Hydrate basis | Anhydrous and hydrated forms can differ in calcium content and assay calculation. |
| Solubility | Calcium Citrate is sparingly soluble; dispersion and suspension behavior must be validated. |
| Particle size | Fine grades may improve mouthfeel and suspension, while granules may improve flow and reduce dust. |
| pH | pH affects mineral behavior, protein stability, taste profile and microbial hurdle design. |
| Stabilizer system | Hydrocolloids, proteins, emulsifiers, starches and fibers can affect suspension and sedimentation. |
| Process heat | Pasteurization, UHT, retort, baking or extrusion may influence mineral stability and texture. |
| Label strategy | Check calcium claim, additive declaration and nutrient panel rules before commercial launch. |
Industrial application guidance
Calcium Citrate Fortification Grade should be selected according to the actual fortification objective. A beverage may need suspension stability and smooth mouthfeel, while a cereal may require thermal stability and even dry distribution. A tablet may require compressibility and particle-size control, while a medical-nutrition powder may require strict contaminant limits, microbiological controls and regulatory documentation.
Fortified beverages
In beverages, Calcium Citrate may support calcium claims where a cloudy, emulsion-based or powder-to-liquid system can tolerate suspended mineral particles. Developers should validate pH, sedimentation, mouthfeel, stabilizer selection, shelf-life behavior, package shaking instructions and finished-product calcium assay.
Dairy and fermented products
In dairy drinks, yogurts and desserts, Calcium Citrate can contribute calcium while interacting with milk proteins, phosphates and citrate buffers. Key tests include heat stability, protein sedimentation, syneresis, viscosity, pH drift, texture and sensory impact after storage.
Plant-based drinks
Plant-based beverages often require calcium fortification to approach dairy-style nutrition panels. Calcium Citrate should be compared with calcium carbonate, calcium phosphate and calcium lactate for taste, sediment, pH behavior, cost-in-use, label preference and process stability.
Cereals, flour and grain systems
In flour, cereal and grain-based foods, fortification-grade Calcium Citrate must disperse uniformly and remain stable through mixing, baking, extrusion or drying. Buyers should evaluate particle size, premix dilution, segregation risk, thermal exposure and serving-size calcium delivery.
Nutritional powders and meal replacements
In protein powders, meal replacements and nutrition sachets, Calcium Citrate must balance mineral nutrition with mouthfeel, reconstitution, dusting, flowability and flavor compatibility. The best grade depends on particle size, bulk density, blending process and packaging moisture barrier.
Gummies, tablets and chewables
In gummies, chewables and tablets, Calcium Citrate can support calcium delivery with manageable flavor. Formulators should test grittiness, chew texture, acid balance, compression behavior, tablet hardness, coating performance and flavor masking.
Infant and special-nutrition foods
Infant, medical and special-nutrition applications require stricter review. Buyers should confirm whether the grade meets the required regulation, contaminant limits, microbiological standard, nutrient specification, documentation package and customer approval before use.
Premix manufacturing
In vitamin-mineral premixes, Calcium Citrate must be compatible with vitamins, minerals, carriers and processing aids. Important controls include bulk density matching, segregation resistance, overage strategy, dust control, homogeneity testing and retained-sample stability.
Fortification design and calcium calculation
Calcium fortification projects require precise calculation. The buyer should confirm whether the supplier reports assay as Calcium Citrate, calcium content, anhydrous basis, hydrate basis or another specification basis. Because elemental calcium percentage changes with hydrate form and purity, the purchasing specification should not rely only on product name. The final formula should be calculated by elemental calcium contribution per serving and verified analytically where required.
Useful fortification targets
- Calcium source for fortified dairy alternatives
- Mineral enrichment for breakfast cereals and grain products
- Calcium contribution in meal-replacement and protein powders
- Mineral system for tablets, gummies and sachets
- Calcium fortification for beverages with suitable suspension design
- Premix-ready calcium source for multi-nutrient blends
Calculation checkpoints
| Target per serving | Define the calcium amount needed per serving before selecting dosage. |
|---|---|
| Assay basis | Confirm whether supplier values are reported as calcium, calcium citrate or hydrate basis. |
| Overage | Use overage only when justified by processing loss, shelf-life data and local rules. |
| Analytical method | Confirm the method used for finished-product calcium verification. |
| Nutrition claim | Check minimum and maximum levels required for calcium claims in the destination market. |
| Serving size | Ensure nutrient calculations match the declared serving size and label format. |
Specification checklist for buyers
For industrial purchasing, the most valuable comparison is not only the product name. Buyers should compare the supplier specification against the intended application, calcium target, regulatory market, processing conditions and internal quality standard. A strong specification helps QA, R&D, purchasing and regulatory teams confirm suitability before commercial commitment.
Chemical and physical controls
- Identity as Calcium Citrate / E333 / INS 333
- Assay or purity basis, including hydrate form where specified
- Elemental calcium content and acceptable tolerance
- Citrate content or calcium-to-citrate relationship where specified
- Appearance, color and odor
- Moisture, water content or loss on drying
- pH under supplier test conditions
- Solubility, dispersibility or suspension behavior where relevant
- Particle size distribution or mesh range
- Bulk density or tapped density for automated dosing
- Flowability, caking tendency and dusting behavior for dry blending
- Sensory profile, including chalkiness, bitterness, grittiness or foreign notes
Purity, safety and compliance checks
- Heavy metals limits according to buyer or regulatory specification
- Lead, arsenic, cadmium and mercury limits where required
- Oxalate, fluoride or other impurity limits where specified by buyer standard
- Microbiological limits for total plate count, yeast, mold, coliforms and pathogens where relevant
- Food-grade statement and intended-use declaration
- Residual solvents or process impurities if applicable to manufacturing route
- Batch number, production date, retest date and shelf-life
- SDS classification and safe handling recommendations
- Allergen, GMO, halal, kosher, vegan and irradiation declarations when requested
- Country-of-origin and manufacturer traceability information
- Regulatory statement for the destination market where available
Regulatory and label review
Calcium Citrate is identified as E333 / INS 333 and may be reviewed as a calcium citrate additive, acidity regulator, sequestrant, firming agent or calcium source depending on the market and application. In fortification projects, the buyer must review both additive rules and nutrition rules. A product may be technically suitable as a calcium source but still require specific approval, labeling language, nutrient limits or claim substantiation in the destination country.
Label terminology can differ by jurisdiction. Depending on local rules, Calcium Citrate may need to be declared by additive name, E-number, INS number, class name, mineral source, calcium compound or a combination of these. Products marketed with calcium claims, bone-health claims, child-nutrition claims, infant-food positioning, sports-nutrition claims or medical-nutrition positioning require careful regulatory review before commercial use.
For export projects, confirm the finished food category, formula, serving size, use level, nutrition panel, label declaration, customer standard and destination-market rule before ordering commercial volume. If a supplier cannot provide a market-specific regulatory statement, the buyer should obtain confirmation from a qualified regulatory consultant or the relevant local authority.
Process validation considerations
Fortification-grade minerals should be validated in the actual manufacturing process. The same Calcium Citrate grade may behave differently in a dry cereal premix, dairy drink, plant-based emulsion, gummy, tablet, powdered beverage or infant-food system. Pilot trials should reproduce the real mixing order, hydration time, shear, heat treatment, packaging, storage temperature and distribution conditions.
Recommended validation work
- Compare several grades with different particle sizes and bulk densities
- Verify elemental calcium contribution in the finished product
- Measure pH after mixing, heat treatment and shelf-life storage
- Evaluate sedimentation, suspension stability and mouthfeel in liquids
- Measure grittiness, chalkiness, bitterness and drying sensation
- Check blend uniformity and segregation risk in dry premixes
- Validate heat stability during pasteurization, UHT, retort, baking or extrusion
- Run accelerated and real-time shelf-life tests under target packaging conditions
- Confirm final label wording, nutrition declaration and legal use level before launch
Common process checks
| Weighing accuracy | Calcium claims require calibrated scales and controlled batching procedures. |
|---|---|
| Premix method | Preblending with maltodextrin, flour, sugar, starch or carrier can improve distribution. |
| Hydration | Liquid systems may need controlled agitation, hydration time and shear conditions. |
| Thermal process | Confirm stability after pasteurization, UHT, retort, hot fill, baking or extrusion. |
| Carrier compatibility | Check interaction with proteins, acids, phosphates, citrates, gums, starches, vitamins and flavors. |
| Finished-product testing | Use retained samples to verify calcium content, pH, sediment, taste, viscosity and shelf-life behavior. |
Comparison with related calcium sources
Calcium Citrate Fortification Grade is commonly compared with calcium carbonate, calcium phosphate, calcium lactate, calcium gluconate, calcium chloride, calcium malate and calcium citrate malate. The best option depends on elemental calcium content, solubility, taste, pH effect, sedimentation behavior, label preference, processing stability, cost-in-use, claim strategy and destination-market regulation.
When Calcium Citrate may be considered
- When a calcium source with citrate functionality is preferred
- When a formula needs mineral enrichment with a mild sensory profile
- When calcium carbonate creates excessive alkalinity or chalkiness
- When dry premix, tablet, gummy or powder handling is important
- When a cloudy beverage or suspension can manage low solubility
- When E333 / INS 333 is permitted in the exact destination-market application
When another calcium source may be better
- When a clear beverage requires a highly soluble calcium source
- When very high elemental calcium is needed at low dosage
- When sedimentation cannot be managed with particle size or stabilizers
- When cost-in-use favors calcium carbonate or another mineral salt
- When the finished product requires a different pH effect
- When the claim strategy or customer standard excludes citrate-based ingredients
Quality documentation to request
Documentation quality is often the deciding factor for fortification-grade ingredient purchasing. Before confirming an order, request current and batch-specific documents where possible:
- Product specification or technical data sheet showing identity, grade and key limits
- Certificate of analysis for the offered batch or a representative recent lot
- Elemental calcium assay and calculation basis
- Safety data sheet with handling, storage, PPE and transport information
- Food-grade declaration and intended-use statement
- Country-of-origin, manufacturer and traceability statement where available
- Shelf-life, retest period and storage-condition statement
- Allergen, GMO, irradiation, vegan/vegetarian, halal or kosher declarations when required
- Heavy metals, microbiology or impurity declaration according to buyer specification
- Packaging specification, net weight, gross weight and pallet configuration
- Regulatory statement for the destination market, if available from the supplier
- Special-nutrition, infant-food or medical-food suitability statements only where applicable and supported
- Sample CoA and pre-shipment document review for new suppliers
- Label draft or package marking information for import and warehouse control
Packaging, storage and logistics
Calcium Citrate Fortification Grade should be handled as a controlled food ingredient with clean, sealed packaging and traceable lot identification. Because fortification ingredients are commonly used for label-sensitive nutritional claims, packaging integrity, moisture protection, contamination control and lot separation are essential for accurate dosing and quality assurance.
Packaging details to confirm
| Net weight | Confirm available pack sizes such as 10 kg, 20 kg, 25 kg, drum packaging or supplier-specific formats. |
|---|---|
| Inner liner | Request food-compatible liner protection for moisture, odor and contamination control. |
| Seal integrity | Confirm closure method, tamper evidence and protection against powder leakage. |
| Palletization | Ask for bags or drums per pallet, pallet dimensions, wrapping and export pallet treatment. |
| Labeling | Confirm product name, lot number, net weight, origin, shelf-life and handling marks. |
| Container loading | Check maximum payload, moisture protection and desiccant needs for sea freight. |
Storage recommendations
- Keep containers tightly closed when not in use
- Store in a dry, cool and well-ventilated warehouse
- Protect from water, humidity, condensation and direct sunlight
- Keep away from strong odors and non-food chemicals
- Prevent dust generation during weighing, charging and transfer
- Use first-expiry, first-out stock rotation
- Maintain lot traceability from receipt to production batch
- Segregate food-grade additives from allergen-risk or incompatible materials
Industrial purchasing notes
When sourcing Calcium Citrate Fortification Grade, procurement teams should define the technical and commercial target before requesting offers. A clear inquiry improves supplier matching, reduces document delays and helps avoid comparing non-equivalent grades. The most useful inquiry normally includes additive identity, E/INS number, target specification, elemental calcium target, hydrate basis, particle-size requirement, annual demand, first-order quantity, destination country, delivery term, packaging preference, required certifications and buyer-specific restricted-substance limits.
For manufacturers using automated dosing, the physical grade is especially important. Particle size, dusting tendency, bulk density, flowability and caking tendency can affect weighing accuracy, dry blending, powder transfer, suspension behavior and finished-product consistency. For export projects, document consistency between invoice, label, CoA, packing list and regulatory statement should be checked before shipment.
Supplier qualification questions
Technical questions
- Which specification standard does the material follow?
- Is the supplied grade food-grade and suitable for the intended destination market?
- Is the assay reported on anhydrous, hydrated or another calculation basis?
- What is the elemental calcium content and acceptable tolerance?
- Can particle size distribution and bulk density be confirmed?
- Can the supplier provide representative and batch-specific certificates of analysis?
- Are heavy metals, microbiology and sensory quality routinely controlled?
- Is the grade suitable for infant, medical or special-nutrition foods if required?
- Can the supplier provide a sample for beverage, dairy, tablet, cereal or dry-blend trials?
Commercial questions
- What is the minimum order quantity and standard lead time?
- Which packaging formats are available for export?
- Can the supplier support annual contracts or scheduled shipments?
- Which incoterms, ports and payment terms are available?
- Can documents be reviewed before shipment?
- Can the supplier provide market-specific declarations when required?
- Can the supplier support private-label, distributor or manufacturer documentation needs?
How to request this product
Send the product name, target grade or reference specification, elemental calcium target, quantity, destination country, delivery term, packaging preference, expected shipment date and required documents. If you already purchase Calcium Citrate Fortification Grade, attach or describe your existing specification, label, certificate of analysis, particle-size requirement, calcium claim target or approved supplier standard so supplier options can be compared more accurately.
Useful answers
What is Calcium Citrate Fortification Grade used for in food manufacturing?
Calcium Citrate Fortification Grade is used as a calcium source and mineral-enrichment ingredient in selected food and beverage systems. It is commonly reviewed for fortified beverages, dairy products, plant-based drinks, cereals, flour products, nutritional powders, tablets, gummies and special-nutrition applications where regulations permit.
Why choose Calcium Citrate for fortification?
Calcium Citrate may be selected when a citrate-based calcium source, mild sensory profile, mineral balance, premix compatibility or lower alkalinity than calcium carbonate is preferred. Final suitability depends on calcium target, solubility, particle size, sensory impact, process conditions and label rules.
Is Calcium Citrate soluble in water?
Calcium Citrate is only sparingly soluble in water. For beverages and liquid systems, formulators should validate particle size, dispersion method, stabilizer system, pH, sedimentation, mouthfeel and shelf-life behavior in the actual product.
How does Calcium Citrate compare with Calcium Carbonate?
Calcium Carbonate usually provides higher elemental calcium and lower cost-in-use, but it can be more alkaline and chalky. Calcium Citrate may be preferred where citrate functionality, mild taste or different pH behavior is useful, but solubility and sedimentation still need validation.
Is this grade suitable for infant or medical foods?
Only where the destination-market regulation, final food category, nutrient specification, contaminant limits, microbiological requirements and customer standard permit it. Infant and medical foods usually require stricter documentation, lower contaminant limits and specialized regulatory approval.
Which foods commonly require Calcium Citrate Fortification Grade review?
Buyers often review this ingredient for fortified beverages, powdered drinks, dairy products, plant-based drinks, cereals, flour systems, gummies, tablets, nutritional powders and special-nutrition products. The exact permission and nutrient claim must be verified for the destination market.
Is Calcium Citrate permitted in every country?
No. Food additive use and mineral fortification depend on destination-market rules, food category, maximum and minimum nutrient levels, nutrition-claim rules, label requirements and buyer responsibility. Buyers should verify final regulatory status before use.
Which documents should be requested?
Buyers commonly request a product specification, technical data sheet, certificate of analysis, elemental calcium assay, safety data sheet, origin statement, shelf-life information, storage conditions, packaging details, label information and destination-market declarations when required.
What should be checked on the certificate of analysis?
Check lot number, production date, test date, identity, assay, elemental calcium content, citrate content, hydrate basis, appearance, moisture or loss on drying, pH, particle size, heavy metals, microbiology where specified and whether the certificate matches the supplied batch and purchase specification.
Can Global Food Additives source Calcium Citrate Fortification Grade?
Global Food Additives can review sourcing options according to target grade, quantity, destination, packaging, documentation, shipment schedule and regulatory expectations. Availability depends on supplier stock, origin, certification and buyer requirements.
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