Tragacanth Gum — E 413
Tragacanth Gum is a natural dried exudate collected from selected species of the genus Astragalus. It is an acidic, heterogeneous polysaccharide hydrocolloid used in food manufacturing for viscosity development, suspension, emulsion stabilization, water binding, adhesion, texture control and protection against physical separation.
Its functionality is produced by two operationally different polysaccharide fractions. The more soluble fraction, commonly called tragacanthin, contributes colloidal viscosity, while the bassorin-rich fraction absorbs water and swells into hydrated microgel particles. This dual mechanism gives Tragacanth Gum a distinctive combination of yield stress, shear-thinning flow, particle suspension and long-term structure.
As a botanical exudate, Tragacanth Gum can vary by species, growing region, harvest period, ribbon grade, cleaning method, milling, particle size and age. Industrial purchasing should therefore be based on an application-relevant viscosity and suspension specification rather than product name or mesh size alone.
Product identity
| Product name | Tragacanth Gum |
|---|---|
| Common synonyms | Gum Tragacanth, Tragacanth, Astragalus Gum |
| Food additive identity | E 413 / INS 413 |
| CAS number | 9000-65-1 |
| Source type | Natural dried plant exudate |
| Botanical family | Fabaceae / Leguminosae |
| Botanical genus | Approved gum-producing species of Astragalus |
| Typical geographic origin | Mountainous areas of Western Asia and the Middle East; exact origin is supplier- and harvest-specific |
| Polymer type | Acidic, highly branched, heterogeneous plant polysaccharide |
| Fixed molecular formula | Not applicable; natural Tragacanth is a variable polymer mixture |
| Fixed molecular weight | Not applicable; molecular-size distribution varies by botanical source and processing |
| Principal operational fractions | Water-soluble tragacanthin and water-swellable bassorin |
| Typical appearance | Raw ribbons or flakes; milled material is an off-white, cream-colored or pale powder |
| Typical odor and taste | Mild or nearly odorless and bland when compliant with food-grade sensory requirements |
| Water behavior | Partly soluble and extensively swellable, producing a viscous, structured colloidal dispersion |
| Ethanol behavior | Insoluble |
| Typical commercial forms | Ribbon or flake gum, powdered gum, micronized powder, purified grade or supplier-specific agglomerated grade |
Primary technical functions
- Viscosity development: creates body and flow resistance at comparatively low use levels in compatible formulations.
- Particle suspension: helps reduce settling of spices, cocoa, minerals, fruit particles and other dispersed solids.
- Emulsion stabilization: supports oil-droplet separation control through continuous-phase viscosity and interfacial stabilization.
- Water binding: immobilizes part of the aqueous phase and may reduce weeping, syneresis or moisture migration.
- Texture control: can provide smooth body, cohesiveness, cling and spoonable structure.
- Adhesion: may improve coating, paste, decorative and binding performance in selected food systems.
- Acid-system stabilization: is often evaluated in low-pH sauces, dressings, fruit systems and flavor preparations.
- Protective colloid behavior: can help limit aggregation, creaming, sedimentation and physical instability in compatible dispersions.
Tragacanthin and bassorin functionality
Tragacanthin-rich fraction
Tragacanthin is the more water-soluble colloidal fraction. It disperses into the continuous water phase and contributes soluble polymer viscosity, protective-colloid behavior and emulsion support.
Its contribution depends on concentration, molecular-size distribution, pH, salts, temperature and the mechanical treatment applied during hydration.
Bassorin-rich fraction
Bassorin is substantially less soluble but absorbs water and swells. The swollen fraction behaves as hydrated microgel material distributed throughout the continuous phase.
This swelling contributes body, yield stress and particle suspension even though the fraction has not formed a complete molecular solution.
Combined rheological effect
The dissolved polymer phase and swollen particle phase act together. Under low stress, the network helps resist particle settling and emulsion movement. Under higher mixing, pumping or pouring stress, the structure becomes easier to move.
This shear-thinning behavior can provide storage stability while maintaining pumpability, pourability or spoonability when the gum concentration and hydration process are correctly designed.
Technical purchasing specification framework
Food-grade identity and purity establish the regulatory foundation, but industrial functionality requires additional control of botanical source, viscosity, hydration, particle size and microbiological quality.
| Parameter | Purchasing requirement | Industrial significance |
|---|---|---|
| Product identity | Tragacanth Gum / E 413 / INS 413 | Distinguishes genuine Tragacanth from karaya, acacia and other gums. |
| Botanical source | Supplier declaration of approved Astragalus species or controlled botanical source | Botanical variation can affect chemistry, color, hydration and viscosity. |
| Geographical origin | Country and, where relevant, collection region | Supports traceability, harvest-risk review and supplier consistency. |
| Commercial grade | Ribbon quality, powder grade, purified grade or application-specific grade | Grade strongly affects color, impurity level and functional performance. |
| Viscosity | Controlled range using a fully defined concentration, hydration and measurement method | Primary application-performance and supplier-comparison parameter. |
| Viscosity method | Gum concentration, water quality, temperature, hydration time, spindle, speed and instrument | Results are not comparable when preparation or measurement differs. |
| pH | Supplier-controlled range using a defined dispersion concentration | Helps identify lot variation, contamination or process differences. |
| Loss on drying / moisture | Controlled maximum | Influences shelf life, microbial risk, caking and active-gum content. |
| Total ash | Controlled maximum | Indicates mineral matter and processing cleanliness. |
| Acid-insoluble ash | Controlled maximum | Supports control of soil, sand, siliceous matter and harvest contamination. |
| Foreign organic matter | Controlled maximum or absence criterion | Addresses bark, plant fragments and extraneous botanical matter. |
| Particle size | Mesh, sieve residue or laser-diffraction profile | Affects dusting, dispersion speed, lump formation and hydration. |
| Color | Visual reference, whiteness or colorimetric limit where needed | Important for clear, white, pastel and lightly colored foods. |
| Odor and taste | Complies with approved sensory reference | Detects aging, contamination, smoke, mustiness or foreign material. |
| Protein content | Informational or controlled where emulsification is critical | Minor associated protein can influence interfacial functionality. |
| Heavy metals | Compliance with destination-market and customer limits | Required for natural botanical material risk management. |
| Pesticide residues | Risk-based compliance or supplier declaration | Relevant to botanical origin and customer standards. |
| Microbiological quality | Defined limits for total count, yeasts, moulds, indicators and pathogens | Natural exudates require controlled cleaning, processing and storage. |
| Adulteration screening | Identity testing appropriate to the supply-chain risk | Detects substitution or dilution with other gums, starches or mineral matter. |
Raw gum, powder and application-specific grades
| Commercial form | Primary characteristics | Typical purchasing considerations |
|---|---|---|
| Ribbon or flake gum | Minimally milled natural exudate with visible ribbon or flake structure | Botanical authenticity, cleanliness, color, ribbon grade, moisture and downstream milling capability |
| Standard powdered grade | Milled material suitable for general dry blending and hydration | Mesh size, viscosity, microbiology, dusting, color and lumping tendency |
| Micronized grade | Finer particle profile with potentially faster wetting and higher dust | Dust control, high-shear capability, preblending and operator exposure |
| Purified or selected grade | Enhanced control of color, foreign matter and application consistency | Sensitive beverages, coatings, confectionery and pharmaceutical-style uses |
| Low-microbiological-load grade | Enhanced microbial control through validated supplier processing | Cold-processed foods, dry blends and customers with tighter limits |
| Agglomerated or instant-dispersing grade | Supplier-specific particle engineering for improved wetting and reduced dust | Verify whether the grade contains processing aids or additional carriers |
Dispersion, hydration and viscosity development
Tragacanth Gum begins absorbing water when its surface becomes wet. If powder particles contact water in concentrated clusters, the outer layer can hydrate rapidly and form a barrier around dry powder, producing persistent lumps or “fish-eyes.”
Recommended hydration sequence
- Define the gum concentration. Establish the target based on viscosity, suspension and sensory testing.
- Select a dispersion strategy. Choose dry preblending, oil pre-wetting, slurry preparation or direct high-shear addition.
- Create adequate liquid movement. Establish a strong vortex or use an appropriate powder-induction system.
- Add gradually. Introduce the gum at a rate that allows individual particles to separate.
- Complete initial dispersion. Continue mixing until no visible dry agglomerates remain.
- Allow full hydration. Provide sufficient time for the soluble fraction to disperse and the bassorin fraction to swell.
- Add competing solutes carefully. High sugar, salt, acid or alcohol may slow water access when added too early.
- Measure after equilibration. Record viscosity only after the defined hydration and resting period.
Dry preblending
Tragacanth powder may be dry blended with sugar, salt, starch, maltodextrin or another compatible free-flowing ingredient before contact with water.
- Separates gum particles before hydration
- Reduces local gum concentration
- Can reduce lump formation
- Requires a validated gum-to-carrier ratio
- Requires control of segregation during transport
Oil or non-aqueous pre-wetting
The gum may be pre-wetted in a compatible oil, glycerol, syrup component or other approved carrier when permitted by the formulation.
- Coats and separates powder particles
- Delays immediate surface hydration
- Supports gradual water penetration
- Requires compatibility with the final food
- Does not replace adequate mixing
High-shear dispersion
- Useful for rapid powder incorporation
- Requires controlled powder feed rate
- Can break weak agglomerates
- May entrain air if the mixer is poorly positioned
- Excessive mechanical treatment can alter measured rheology
- Production and laboratory shear should be comparable
Hydration time
- Initial viscosity does not always represent final viscosity.
- Swelling can continue after mixing stops.
- Cold systems may require extended equilibration.
- Particle size affects apparent hydration speed.
- Sugar and salts can delay hydration.
- Final QC should use a defined resting period.
Flow behavior and suspension performance
Shear-thinning behavior
A properly hydrated Tragacanth dispersion is generally easier to move as shear increases. This means viscosity measured during pumping, stirring or pouring can be lower than apparent viscosity during undisturbed storage.
This behavior can support stable storage while maintaining processability and consumer pourability.
Yield-stress contribution
The structured dispersion may resist movement until a minimum stress is applied. A useful low-shear structure can reduce sedimentation, creaming and spice movement.
Excess structure may cause poor filling, stringiness, uneven coating or undesirable pastiness.
Suspension-design variables
| Variable | Effect on suspension | Development action |
|---|---|---|
| Particle size | Larger particles generally settle more rapidly | Control milling, screening or ingredient particle size |
| Particle density | Greater density difference between particle and liquid increases movement | Increase low-shear structure or modify particle properties |
| Continuous-phase viscosity | Higher viscosity generally slows settling | Optimise gum level without producing excessive eating viscosity |
| Yield stress | Adequate yield stress can hold particles at rest | Measure low-shear rheology, not only high-speed viscosity |
| Particle concentration | High solids may increase interaction, sediment compaction or apparent viscosity | Test the complete solids loading |
| Temperature | Changes continuous-phase viscosity and density | Evaluate storage, transport and consumption temperatures |
| Shear history | Mixing, pumping and homogenisation can alter structure | Reproduce the industrial shear profile during development |
Oil-in-water emulsion stabilization
Tragacanth Gum can support emulsions through a combination of continuous-phase thickening, droplet-movement reduction and interfacial protective-colloid effects. It does not eliminate the need for correct oil-phase composition, droplet-size control and homogenisation.
| Emulsion variable | Potential effect | Validation requirement |
|---|---|---|
| Oil type | Polarity, density and interfacial tension affect emulsification | Test the actual flavor oil, fat or essential-oil composition |
| Oil concentration | Higher dispersed-phase loading increases collision and coalescence risk | Evaluate the complete oil-loading range |
| Droplet size | Smaller, uniform droplets usually improve physical stability | Define homogenisation pressure or rotor-stator conditions |
| Gum hydration | Incomplete hydration reduces continuous-phase protection | Hydrate according to a controlled sequence before final evaluation |
| pH | Alters gum ionisation, associated protein behavior and other emulsifiers | Test the final equilibrium pH |
| Electrolytes | Salt and multivalent ions can influence interfacial and polymer behavior | Use the actual process water and mineral composition |
| Thermal process | Heating may change viscosity, droplet interaction and flavor volatility | Reproduce pasteurisation, cooling and storage |
| Other emulsifiers | Proteins, lecithin and small-molecule emulsifiers may act synergistically or competitively | Test the complete emulsifier system |
pH, salts, heat and processing stability
Acidic systems
Tragacanth is often considered where viscosity or suspension must be retained in acidic dressings, sauces, fruit preparations and flavor systems.
Stability is not unlimited. Very low pH, prolonged high temperature and long storage may reduce polymer molecular size and viscosity. The full process must be validated.
Salt and mineral systems
The gum contains acidic groups and behaves as a natural polyelectrolyte. Sodium, calcium, magnesium and other ions may change hydration, swelling, viscosity or interaction with proteins.
Laboratory work should use the same water hardness and mineral composition planned for production.
Heat processing
- Moderate warming can accelerate water penetration.
- Heating does not correct poor initial dispersion.
- Prolonged severe heat may reduce viscosity.
- Acid and heat together can increase polymer degradation.
- Viscosity should be checked after cooling and equilibration.
- Retort or UHT use requires product-specific validation.
Freeze-thaw processing
- Freeze concentration changes local sugar, salt and acid levels.
- Ice formation excludes gum and other solutes.
- Thawing may cause water separation or local gum concentration.
- Performance depends on the complete hydrocolloid system.
- Multiple freeze-thaw cycles should be tested.
- Do not assume universal freeze-thaw stability from gum identity alone.
Potential food-manufacturing applications
The following are technical evaluation areas rather than universal permissions or fixed dosage recommendations. Suitability depends on grade, local regulation, product composition, process and sensory targets.
| Application | Potential technical purpose | Critical validation points |
|---|---|---|
| Salad dressings | Viscosity, spice suspension, emulsion stabilization and cling | Acid level, oil loading, droplet size, pourability, salt and shelf life |
| Sauces and condiments | Body, suspension, adhesion, reduced phase separation and coating | Heat process, pH, starch interaction, particulates, filling and consumer flow |
| Gravies | Viscosity, solids suspension and process-tolerance support | Starch gelatinisation, salt, heating, holding and reheating |
| Fruit preparations | Fruit-particle suspension, syrup body and reduced weeping | Fruit acidity, soluble solids, calcium, pasteurisation and storage |
| Beverage concentrates | Flavor-oil stabilization, cloud support and suspension | Dilution behavior, clarity target, acidity, alcohol, homogenisation and sediment |
| Suspended-particle beverages | Reduced settling of pulp, cocoa, spices, minerals or botanical particles | Particle size, density, drinking viscosity, redispersibility and package life |
| Confectionery pastes | Binding, shaping, adhesion, moisture control and structural body | Sugar concentration, drying, brittleness, color and storage humidity |
| Gum paste and edible decorations | Fine shaping, binding and drying structure | Gum strength, powder fineness, drying rate, cracking and humidity response |
| Bakery fillings | Water binding, fruit suspension, bake stability and reduced leakage | Oven profile, starch, sugar, acidity, pumpability and post-bake texture |
| Frostings and icings | Body, adhesion, spreadability and moisture control | Sugar solids, fat phase, aeration, crusting and package stability |
| Dairy desserts | Viscosity, suspension and reduced whey separation | Protein interaction, calcium, heat history, fermentation and mouthfeel |
| Plant-based dairy alternatives | Suspension, body and reduction of phase separation | Protein source, minerals, homogenisation, heat treatment and sediment |
| Frozen desserts | Body, water immobilisation and texture support | Ice-crystal control, overrun, meltdown, freeze-thaw cycle and gum synergy |
| Meat sauces and processed meat systems | Formulation aid, moisture management and sauce or coating stabilization | Protein interaction, salt, phosphate, cooking loss, sensory quality and legal use |
| Flavor emulsions | Protective colloid, viscosity and flavor-oil droplet stabilization | Oil chemistry, weighting agent, homogenisation, dilution and oxidation |
Dosage design and scale-up
There is no universal Tragacanth Gum dosage because functional demand changes with solids, oil, acidity, particle load, other hydrocolloids and desired sensory properties.
Ingredient mass calculation
Tragacanth Gum mass, kg = batch mass, kg × addition level, % ÷ 100
The selected level should be confirmed through a structured concentration series using production-representative ingredients and processing.
Dry premix calculation
Gum concentration in premix, % = gum mass ÷ total premix mass × 100
The premix should contain enough carrier to separate gum particles while remaining practical for weighing, blending and dosing.
Recommended development matrix
- Prepare a no-gum control.
- Prepare at least three increasing gum concentrations.
- Use the same water, temperature and mixing sequence.
- Measure viscosity after identical hydration time.
- Measure low-shear suspension and high-shear process flow.
- Complete heat, freeze-thaw or acid processing as applicable.
- Evaluate sensory thickness, sliminess, pastiness and flavor release.
- Store in the final package through the intended shelf life.
Ingredient and process interactions
| Component | Potential interaction | Recommended evaluation |
|---|---|---|
| Sugar and soluble solids | Compete for water and can delay gum hydration | Hydrate gum before high solids where the process permits |
| Salt | Changes ionic strength and may alter swelling or rheology | Use the final salt concentration during testing |
| Calcium and magnesium | Multivalent ions may alter acidic-polysaccharide interactions | Evaluate process-water hardness and mineral fortification |
| Food acids | Influence ionisation, viscosity and long-term hydrolytic stability | Test final pH after heat processing and storage |
| Starches | Can increase body synergistically or create excessive pastiness | Optimise starch type, cook profile and gum dose together |
| Xanthan gum | Can increase low-shear suspension and change pour profile | Conduct blend-ratio trials rather than direct substitution |
| Guar or locust bean gum | May modify body, hydration rate and sensory texture | Compare cold and heated hydration sequences |
| Pectin | Combined performance depends on pectin type, sugar, acid and calcium | Validate gel, suspension and syneresis in the complete fruit system |
| Proteins | Electrostatic or steric interaction may affect viscosity, aggregation and emulsion behavior | Evaluate at the actual protein isoelectric region and heat process |
| Alcohol | Reduces water availability and may precipitate hydrocolloid fractions | Test the final alcohol-water ratio and addition order |
| Preservatives | Gum does not replace microbial preservation | Validate pH, preservative system, hygiene and shelf life independently |
| Enzymes | Contaminating or added polysaccharidases may reduce viscosity | Review enzyme compatibility and heat-inactivation sequence |
Comparison with other common food gums
| Hydrocolloid | General functional profile | Difference from Tragacanth |
|---|---|---|
| Xanthan Gum | Rapid hydration, strong shear thinning and efficient suspension | Fermentation-derived and typically more uniform; can give a different elastic or slimy sensory profile |
| Guar Gum | High cold-water viscosity and economical thickening | Seed galactomannan with different acid, shear and suspension behavior |
| Gum Arabic | Excellent flavor-emulsion and encapsulation functionality at comparatively low viscosity | More soluble and normally much less thickening at equal concentration |
| Gum Karaya | Strong swelling and water absorption | Different botanical source, chemistry, odor profile and regulatory identity |
| Locust Bean Gum | Heat-hydrated galactomannan with strong synergy in selected gum systems | Generally requires heat for full functionality and has different gel synergies |
| Pectin | Acidic fruit hydrocolloid capable of controlled gel formation | Gelation depends strongly on pectin type, sugar, acid and calcium |
| Carboxymethyl Cellulose | Cellulose-derived thickener with controlled manufactured consistency | Semi-synthetic polymer with different electrolyte and sensory response |
Incoming quality control and COA review
Identity and composition
- Product name and E 413 identity
- CAS number
- Botanical source declaration
- Country and region of origin
- Commercial grade
- Manufacturing or milling description
- Moisture or loss on drying
- Total ash
- Acid-insoluble ash
- Foreign organic matter
Functional properties
- Viscosity result
- Complete viscosity test method
- pH at a stated concentration
- Particle-size distribution
- Sieve residue
- Bulk density where required
- Color or whiteness
- Hydration time
- Suspension performance where specified
- Emulsion performance where specified
Microbiological quality
- Total aerobic count
- Yeasts and moulds
- Coliforms or Enterobacteriaceae
- Escherichia coli
- Salmonella
- Staphylococcus aureus where required
- Bacillus cereus where risk assessment requires it
- Customer-specific pathogen controls
Chemical contaminants
- Lead
- Arsenic
- Cadmium
- Mercury
- Pesticide residues where required
- Mycotoxins where risk assessment requires testing
- Residual treatment chemicals where applicable
- Mineral and soil contamination
Identity and authenticity controls
- Macroscopic review of raw ribbons or flakes where applicable
- Microscopic examination
- Infrared or other spectroscopic fingerprinting
- Chromatographic monosaccharide profile where required
- Comparison with an approved reference sample
- Screening for other gums, starch or excessive mineral matter
- Supplier traceability to collection and processing lots
Microbiological risk and processing considerations
Tragacanth Gum originates as an outdoor-collected plant exudate. Collection, drying, transport, storage, cleaning, milling and packaging can influence microbiological quality. The gum should not be assumed sterile.
Supplier controls to review
- Collection and harvest hygiene
- Raw-gum sorting and cleaning
- Drying controls
- Pest and foreign-material prevention
- Validated microbial-reduction process where applied
- Post-process environmental control
- Metal detection or foreign-material controls
- Hygienic milling and packaging
Customer process controls
- Include the gum in the raw-material hazard analysis.
- Confirm whether the finished product receives a kill step.
- Control hydrated-gum holding time.
- Avoid prolonged storage of unpreserved gum slurry.
- Clean mixers, tanks and transfer lines after use.
- Validate preservative systems independently.
- Monitor finished-product shelf life.
Collection, cleaning and powder production
Processing methods vary by region and supplier, but commercial Tragacanth production generally includes botanical collection, grading, cleaning, drying, milling and food-grade packaging.
- Plant selection and tapping: suitable gum-producing Astragalus plants are identified and managed according to regional collection practices.
- Exudation: gum emerges from the plant and dries naturally into ribbons, flakes or irregular pieces.
- Collection: dried gum is collected while controlling soil, stones, bark and other foreign matter.
- Sorting and grading: material is separated by color, ribbon quality, cleanliness and physical appearance.
- Cleaning: foreign material is removed through manual, mechanical or supplier-specific cleaning stages.
- Drying or conditioning: moisture is adjusted to support stable milling and storage.
- Milling: ribbons and flakes are reduced to the required powder profile.
- Sieving and classification: particle size and oversize material are controlled.
- Microbial control: a validated supplier process may be applied where required.
- Foreign-material control: screens, magnets, metal detection or other controls are applied.
- Quality release: identity, viscosity, purity, microbiology and physical properties are reviewed before packaging.
Packaging, storage and logistics
Typical packaging
Packaging depends on powder fineness, microbial grade, shipment quantity and supplier. Common formats may include lined multiwall paper bags, food-grade polyethylene-lined bags, fibre drums, cartons with sealed inner bags or other moisture-resistant systems.
- Net weight per package
- Primary food-contact liner
- Moisture-vapor barrier
- Tamper-evidence system
- Bag closure and seal integrity
- Bags or drums per pallet
- Pallet dimensions and construction
- Stretch wrapping and top protection
- Private or manufacturer labeling
- Container-loading quantity
Storage controls
- Store in a cool, dry and well-ventilated warehouse.
- Keep packaging tightly sealed until use.
- Protect from water, humidity and condensation.
- Store on clean pallets away from floors and walls.
- Prevent pest, dust and foreign-odor contamination.
- Avoid excessive heat and direct sunlight.
- Reseal partially used bags immediately.
- Use clean and dry dispensing tools.
- Apply FEFO stock rotation.
- Follow the supplier’s shelf-life statement.
Logistics information required for quotation
| Required form | Ribbon, flake, standard powder, micronized powder, purified grade or low-micro grade |
|---|---|
| Quantity | Sample, laboratory trial, pallet, container quantity or annual forecast |
| Packaging | Bag or drum size, liner, palletization and labeling requirement |
| Destination | City, port, country and final regulatory market |
| Delivery term | Requested Incoterm, delivery point and shipment window |
| Temperature control | Usually dry ambient transport, subject to supplier storage requirements |
| Required documents | COA, specification, SDS, origin, certifications and import documents |
Dust, housekeeping and equipment controls
Fine hydrocolloid powder can produce airborne dust and slippery, difficult-to-clean deposits after contact with water. Industrial handling should follow the current supplier Safety Data Sheet and the site occupational-risk assessment.
Powder handling
- Minimize dust during bag opening and charging.
- Use enclosed transfer or local extraction where practical.
- Use eye and respiratory protection defined by the risk assessment.
- Avoid compressed-air cleaning.
- Use an approved industrial vacuum for dry spills.
- Prevent powder buildup on beams and equipment.
- Keep the material dry until controlled addition.
- Train operators in hydrocolloid dispersion procedures.
Wet spill and cleaning controls
- Wet Tragacanth can create a highly slippery surface.
- Contain dry powder before applying water.
- Remove concentrated gel mechanically where practical.
- Avoid washing large amounts directly into drains.
- Use warm water and validated cleaning chemistry as appropriate.
- Inspect screens, pumps and dead zones for hydrated residue.
- Confirm complete removal before allergen-sensitive production.
Regulatory and labeling considerations
European Union
Tragacanth is identified as E 413. Compliance with its identity and purity specification does not automatically authorize use in every food. The finished-food category, applicable maximum level, conditions of use, carry-over provisions and label declaration must be checked separately.
United States
Gum Tragacanth is listed in 21 CFR 184.1351. The regulation identifies the material as an exudate from gum-producing Astragalus and establishes food-category conditions of use.
| Food category, as served | Maximum level stated in 21 CFR 184.1351 | Recognized functions |
|---|---|---|
| Baked goods and baking mixes | 0.2% | Emulsifier or emulsifier salt, formulation aid, stabilizer and thickener |
| Condiments and relishes | 0.7% | Emulsifier or emulsifier salt, formulation aid, stabilizer and thickener |
| Fats and oils | 1.3% | Emulsifier or emulsifier salt, formulation aid, stabilizer and thickener |
| Gravies and sauces | 0.8% | Emulsifier or emulsifier salt, formulation aid, stabilizer and thickener |
| Meat products | 0.2% | Formulation aid, stabilizer and thickener |
| Processed fruits and fruit juices | 0.2% | Emulsifier or emulsifier salt, formulation aid, stabilizer and thickener |
| All other food categories | 0.1% | Emulsifier or emulsifier salt, formulation aid, stabilizer and thickener |
Reference: 21 CFR 184.1351 — Gum Tragacanth
Other destination markets
- Confirm the permitted food category.
- Confirm the maximum use level or GMP condition.
- Determine the required additive or ingredient declaration.
- Review carry-over from flavor or premix systems.
- Confirm botanical-origin documentation.
- Review pesticide and contaminant requirements.
- Check infant-food and medical-food restrictions.
- Confirm import registration and certificate requirements.
- Review organic, natural and customer clean-label policies separately.
Food-safety and supply-chain controls to review
Quality-system controls
- Recognized food-safety certification
- HACCP or preventive-control program
- Approved collector and raw-material network
- Botanical identification controls
- Harvest-lot traceability
- Cleaning and foreign-material controls
- Microbial-reduction validation where applied
- Laboratory method control
- Change-control notification
- Recall and mass-balance capability
Declarations and certifications
- Food-grade or food-additive compliance
- Botanical-source declaration
- Country-of-origin statement
- Allergen and cross-contact declaration
- GMO statement
- Irradiation or microbial-treatment status
- Animal-origin, vegan and vegetarian statement
- BSE/TSE statement where requested
- Halal and Kosher certificates where required
- Primary-packaging food-contact declaration
Resource management and process efficiency
Responsible botanical sourcing
- Traceability to collection region
- Controlled tapping or collection practices
- Avoidance of destructive overharvesting
- Plant-population and regeneration monitoring
- Collector training and fair commercial practices
- Prevention of protected-species collection
- Supplier due diligence on land and labor practices
Manufacturing efficiency
- Use the minimum technically effective dosage.
- Optimize dispersion to avoid gum loss in lumps.
- Use calibrated gravimetric dosing.
- Reduce dust loss during bag emptying.
- Prepare only the hydrated premix required for production.
- Minimize wet cleaning through controlled dry recovery.
- Choose package sizes that reduce partial-bag waste.
Documents to request before approval
Core technical documents
- Current Product Specification
- Technical Data Sheet
- Lot-specific Certificate of Analysis
- Complete viscosity method
- Safety Data Sheet
- Botanical-source statement
- Country and region of origin
- Processing and microbial-treatment statement
- Packaging specification
- Shelf-life and storage statement
Food-safety documents
- Food-grade compliance declaration
- Microbiological specification
- Heavy-metal declaration
- Pesticide-residue statement where required
- Allergen and cross-contact declaration
- GMO and irradiation statements
- Animal-origin and BSE/TSE statements
- Halal and Kosher certificates where required
- Food-safety system certificate
Application-supporting data
- Viscosity-versus-concentration data
- Hydration-time profile
- Shear-rate or rheology curve where available
- Acid and salt stability data
- Heat-process stability data
- Suspension test in a representative system
- Emulsion-stability data where relevant
- Comparison with an approved reference grade
- Recommended dispersion and addition sequence
International trade documents
- Commercial invoice
- Packing list
- Certificate of origin
- Health or free-sale certificate where required
- Legalized or chamber-certified COA where required
- Phytosanitary documentation where applicable
- Transport-classification statement
- ISPM 15 declaration for wood packaging where applicable
- Importer-specific product-registration documents
Information required for an accurate quotation
| Inquiry field | Information to provide |
|---|---|
| Product identity | Tragacanth Gum / Gum Tragacanth / E 413 |
| Required form | Ribbon, flake, standard powder, micronized, purified, instant-dispersing or low-micro grade |
| Application | Sauce, dressing, beverage, fruit preparation, confectionery, bakery, dairy, flavor emulsion or another food |
| Technical objective | Thickening, suspension, emulsion stability, water binding, adhesion, coating or texture control |
| Target conditions | Gum concentration, product pH, salt, sugar, oil, solids and process temperature |
| Viscosity requirement | Target result with concentration, hydration method, spindle, speed and temperature |
| Physical requirements | Particle size, sieve residue, color, bulk density and hydration speed |
| Microbiological requirements | Required total count, yeast, mould, indicator and pathogen limits |
| Regulatory market | Destination country and finished-food category |
| Quantity | Sample, laboratory trial, pallet, container quantity and annual forecast |
| Packaging | Bag or drum size, liner, palletization, private label and label language |
| Destination | Delivery city, port and country |
| Commercial terms | Requested Incoterm, currency, payment preference and shipment window |
| Reference material | Existing specification, COA, approved sample, viscosity method or competitor grade |
Frequently asked questions
What is Tragacanth Gum?
Tragacanth Gum is a natural dried exudate collected from approved gum-producing Astragalus species. Its food-additive identity is E 413 or INS 413.
Is Tragacanth a seed gum?
No. Unlike guar or locust bean gum, Tragacanth is a plant exudate obtained from stems or roots of selected Astragalus plants.
What are tragacanthin and bassorin?
Tragacanthin is the more water-soluble colloidal fraction. Bassorin is less soluble but swells extensively in water. Both fractions contribute to the final hydrated structure.
Does Tragacanth dissolve completely?
No. Part dissolves and part swells. A functional dispersion can therefore remain opalescent and contain hydrated microgel particles.
Does Tragacanth form a true gel?
It mainly forms a viscous, structured and shear-thinning dispersion. It does not normally create a firm classical gel by itself.
Is Tragacanth stable in acidic foods?
It is often evaluated in acidic sauces, dressings, fruit systems and flavor preparations. Stability still depends on pH, heat, salt and storage time.
How should the powder be dispersed?
Separate the particles before full hydration by dry preblending, pre-wetting or gradual addition into a strong vortex. Avoid dumping the full dose directly onto still water.
Why do lumps form?
The outer surface of a powder cluster can hydrate and form a barrier around dry gum. Controlled particle separation and powder feed rate help prevent this problem.
Does viscosity develop immediately?
Not always. Initial dispersion may be rapid, but full swelling and viscosity can continue developing during a defined hydration and resting period.
Can Tragacanth stabilize particles?
Yes. Its low-shear structure and swollen fraction may reduce settling of spices, pulp, cocoa, minerals and other dispersed solids.
Can it stabilize oil-in-water emulsions?
It may support emulsion stability through continuous-phase thickening and protective-colloid effects. Correct homogenisation and oil-phase design are still required.
Can Tragacanth replace xanthan gum directly?
No. The gums have different hydration, rheology, suspension, sensory and cost profiles. Replacement requires a dosage series and shelf-life testing.
Why does natural Tragacanth vary by lot?
Botanical species, origin, harvest season, ribbon grade, age, cleaning, particle size and fraction composition can all affect performance.
Which viscosity method should be used?
The method should define gum concentration, water, hydration time, temperature, instrument, spindle and speed. Results from different methods should not be compared directly.
Does Tragacanth require a heat step?
It can hydrate in cold water, although hydration may be slow. Moderate warming may accelerate hydration, but prolonged severe heat can reduce viscosity.
Is the gum sterile?
No. It is a natural agricultural exudate. Microbiological specifications and any supplier microbial-reduction process should be reviewed.
Is Tragacanth permitted in every country?
No. Food categories, maximum levels, GMP conditions and labeling requirements vary by jurisdiction.
Can Global Food Additives compare an existing grade?
Yes. Buyers can provide a specification, COA, viscosity method, approved sample, application formula or competitor grade for technical and commercial comparison.
Tell us the Tragacanth Gum grade and performance you require.
For an accurate review, include the application, required function, viscosity method, particle size, microbiological limits, product pH, processing conditions, quantity, destination and documentation needs.
Existing specifications, COAs, approved samples or formulation requirements can be described in your message. Our team will review the inquiry and respond from [email protected] .
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