Global Food AdditivesFood-grade additive sourcing
Fructo-Oligosaccharides, commonly abbreviated as FOS and also described as oligofructose, are food-grade fructan oligosaccharides used by manufacturers for soluble fiber enrichment, prebiotic-positioned product design, mild sweetness, sugar reduction, texture support and bulking. This page is prepared as an industrial sourcing and specification guide for buyers that need reliable FOS supply, clear documentation and application-oriented technical comparison.
| Product | Fructo-Oligosaccharides |
|---|---|
| Common abbreviations | FOS, oligofructose, fructooligosaccharides |
| Category | Sweeteners & Polyols / Functional fibers / Soluble dietary fiber ingredients |
| Function | Prebiotic fiber ingredient / mild sweetener / sugar-reduction support / bulking ingredient / texture support |
| E / INS number | Confirm by destination market and supplier documentation |
| CAS / identity | 308066-66-2 |
| Ingredient family | Short-chain fructans composed mainly of fructose units with terminal glucose depending on production route |
| Typical form | Crystalline powder, spray-dried powder, granule, syrup or liquid grade |
Potential use areas may include:
FOS is normally evaluated when a manufacturer wants to improve nutritional positioning while maintaining practical processing performance. It can support fiber enrichment, mild sweetness, solids contribution, mouthfeel, humectancy and sugar-reduction strategies. Because FOS is a family of oligosaccharide mixtures rather than one single molecule, commercial performance depends strongly on source, degree of polymerization, purity, sugar profile, solids content, water activity, pH stability, process temperature and the supplier's manufacturing route.
FOS can be used to increase soluble fiber content in products where the final recipe, serving size and destination-market rules support fiber declaration. Label claims must always be verified by local regulation and finished-product analysis.
Many formulators evaluate FOS in gut-health or microbiome-positioned foods. Any prebiotic or digestive-health wording should be reviewed carefully because claim permissions and evidence requirements vary by country.
FOS offers mild sweetness and can help replace part of sucrose solids. It is often used together with high-intensity sweeteners, polyols, allulose, soluble fibers or bulking agents to balance sweetness, body and aftertaste.
In selected dairy, bakery, nutrition and confectionery systems, FOS can contribute solids, water binding, soft texture and smoother mouthfeel. Results depend on dosage, dry solids, fat level, stabilizer system and process conditions.
Different suppliers may offer different FOS grades. The buyer should not approve a material only by product name; the grade should be compared through full specification, production route, active content, sugar profile and application trials.
| Grade type | Typical purchasing interest | Technical points to verify |
|---|---|---|
| Powder FOS | Dry blends, bakery premixes, nutrition powders, instant drinks, tablets, cereal systems and easier long-distance logistics. | FOS content, moisture, particle size, flowability, dusting, solubility, caking risk, packaging barrier and shelf life. |
| Syrup or liquid FOS | Beverages, dairy, sauces, confectionery fillings and systems where liquid dosing is easier than powder handling. | Dry solids, viscosity, microbial limits, colour, pH, sugar profile, pumpability, storage temperature and preservative status. |
| High-purity FOS | Premium functional foods, nutrition products and formulations where lower mono- and disaccharide content is required. | Minimum FOS percentage, glucose/fructose/sucrose residues, DP distribution, regulatory status and claim-support documents. |
| Application-specific blend | Products requiring sweetness balance, improved mouthfeel, better dispersion or compatibility with other fibers and sweeteners. | Blend composition, carrier ingredients, allergen status, additive declaration, batch consistency and custom documentation. |
For industrial purchasing, the most important step is matching the supplier's FOS specification to the application, process and label objective. The following checkpoints help procurement, R&D and quality teams compare offers more accurately.
FOS performance should be validated in the final formulation because the ingredient interacts with water activity, proteins, minerals, acids, starches, hydrocolloids, sweeteners, flavours and thermal processing. Dosage should be selected through bench trials, sensory review, digestive tolerance consideration and local regulatory assessment.
FOS is commonly evaluated in yogurt, drinking yogurt, dairy desserts and fermented systems for fiber enrichment, mild sweetness and body. Formulators should verify fermentation behaviour, post-acidification, sweetness balance, viscosity and stability through shelf life.
In beverages, FOS can support sugar-reduction and fiber-positioned concepts. Check solubility, clarity, sedimentation, pH stability, heat treatment, flavour release and possible hydrolysis in acidic systems.
In bakery, biscuits, cereal bars and breakfast products, FOS may contribute sweetness, browning, moisture retention and fiber content. Baking trials should evaluate dough handling, spread, colour, texture and shelf-life softness.
FOS can help build solids and mild sweetness in gummies, chewy candies, fillings and coatings. Key controls include water activity, crystallisation, stickiness, Maillard browning, viscosity and compatibility with acids or polyols.
FOS is often used in protein powders, meal replacements and nutrition blends. Buyers should confirm blend uniformity, powder flow, serving-size fiber calculation, digestive tolerance and compatibility with minerals, flavours and sweeteners.
FOS may be used to add soluble solids, mild sweetness and body. Stability testing should include pH, heat process, microbial control, viscosity, colour change and finished-product water activity.
| Technical factor | Why it matters | Practical buyer / R&D action |
|---|---|---|
| Hydration and mixing | Powder grades can form lumps if added too quickly to low-agitation liquid systems. | Preblend with other dry ingredients or add under strong agitation according to process trials. |
| Acid stability | Low pH and heat may influence oligosaccharide stability and sugar profile over shelf life. | Test final pH, heat process and storage conditions before approving the formulation. |
| Sweetness contribution | FOS is only mildly sweet compared with sucrose, so complete sugar replacement normally requires sweetness-system design. | Evaluate combinations with sucrose, stevia, sucralose, monk fruit, polyols, allulose or other permitted sweeteners. |
| Digestive tolerance | Fermentable fibers can cause gas or discomfort at high intake levels in sensitive consumers. | Review serving size, daily intake assumptions, target consumer group and label guidance according to local rules. |
| Water activity and texture | FOS contributes soluble solids and may influence humectancy, softness, stickiness and shelf life. | Measure water activity, texture and moisture migration in the final packaging format. |
| Claim substantiation | Fiber, prebiotic, reduced sugar and calorie claims are regulated and must match finished-product composition. | Confirm analytical method, serving size, claim wording and market-specific requirements before printing labels. |
FOS should be compared by real formulation performance, not only by price per kilogram. Solubility, sweetness, fiber declaration, digestive tolerance, process stability and label rules can change the practical cost-in-use.
| Ingredient | Typical industrial reason to evaluate | Key difference to check |
|---|---|---|
| Fructo-Oligosaccharides FOS | Soluble fiber enrichment, mild sweetness, sugar-reduction support, prebiotic-positioned product design and improved mouthfeel. | DP distribution, sugar profile, source, heat/pH stability and claim status vary by grade and market. |
| Inulin | Fiber enrichment, fat mimetic texture, body improvement and clean-label nutrition positioning. | Often longer-chain than FOS; may provide different solubility, texture and sweetness behaviour. |
| Polydextrose | Bulking, fiber contribution, calorie reduction and sugar replacement in bakery, confectionery and beverages. | Different sensory profile, regulatory treatment, digestive tolerance and formulation behaviour. |
| Resistant dextrin | Soluble fiber fortification with good beverage compatibility and low sweetness. | Different carbohydrate structure, labelling name, analytical method and fiber-claim approach. |
| Polyols | Sugar-free confectionery, chewing gum, calorie reduction and non-cariogenic positioning where permitted. | Polyols are not the same as FOS; they have different sweetness, laxation warnings, calorie values and labelling requirements. |
For repeat purchasing, FOS should be approved through a formal vendor qualification process. The buyer should maintain an approved specification, COA history, supplier questionnaire, traceability records, change-control expectation and complaint-handling procedure.
Check lot number, manufacturing date, expiry or retest date, FOS content, dry solids, sugar profile, moisture, pH, colour, ash, microbiology and contaminant parameters before releasing the material to production.
Request traceability from raw material source to finished lot. For export shipments, align batch documents, invoice, packing list, certificate of origin and container details before dispatch.
Ask whether the manufacturing site operates under recognised food safety or quality systems such as HACCP, ISO 22000, FSSC 22000, BRCGS, IFS or another customer-accepted programme.
For long-term projects, confirm whether the supplier will notify changes in raw material source, production process, specification limits, packaging, allergen status, certification or manufacturing site.
FOS may be treated as a food ingredient, fiber ingredient, novel food, dietary fiber source or other category depending on the jurisdiction and final application. The same material may require different labelling names, claims, serving-size calculations or import documents across markets. Buyers should confirm local rules before using claims such as “prebiotic,” “source of fiber,” “high fiber,” “reduced sugar,” “low calorie,” “supports digestive health” or any health-related statement.
Food-grade FOS is commonly supplied in lined bags, cartons, drums, IBCs or other food-contact packaging depending on whether the grade is powder or syrup. Logistics planning should consider moisture control, temperature exposure, palletisation, container loading, shelf-life remaining and customs documentation.
Typical options may include 20 kg or 25 kg net bags with inner liner, palletised or non-palletised depending on supplier and shipment mode. Confirm bag material, pallet dimensions and container loadability.
Liquid grades may be supplied in drums, IBCs or bulk systems. Confirm dry solids, viscosity, pump requirements, storage temperature and microbial control conditions before order approval.
Store in a cool, dry, clean area away from moisture, direct sunlight, strong odours and incompatible materials. Keep packaging sealed and use first-in-first-out inventory rotation.
For international shipments, align product description, HS code guidance, origin certificate, health certificate if required, halal or kosher status, shelf-life remaining and label language before loading.
Send the product name, target grade or reference specification, powder or syrup preference, FOS content, quantity, destination country, preferred packaging, expected shipment date, Incoterms, application area and required documents. If you already purchase Fructo-Oligosaccharides, attach or describe your current specification, supplier COA, label declaration, sugar-profile requirement or finished-product application so available options can be compared more accurately.
Example: “We need food-grade Fructo-Oligosaccharides FOS, powder grade, minimum FOS content required, 25 kg bags, quantity 5 MT trial or 1 FCL, destination: EU / GCC / USA / Africa, application: yogurt / beverage powder / nutrition bar, required documents: TDS, COA, SDS, allergen statement, GMO statement, halal certificate, origin certificate, microbiological specification and shelf-life declaration. Please quote FOB / CIF / CFR with lead time.”
Fructo-Oligosaccharides are used for soluble fiber enrichment, mild sweetness, sugar-reduction support, texture improvement, bulking and prebiotic-positioned product development. Exact suitability depends on grade, application, processing conditions, serving size, regulations and supplier documentation.
In many commercial contexts, FOS and oligofructose are used as related or overlapping terms. However, buyers should always confirm the supplier's exact specification, source, degree of polymerization, carbohydrate profile and labelling recommendation.
No. FOS is not a sugar alcohol polyol such as sorbitol, xylitol or maltitol. It is a fructan oligosaccharide ingredient. It may appear commercially near sweeteners and polyols because it is used in sugar-reduction and bulking systems.
Usually not by itself. FOS has mild sweetness and contributes soluble solids, so complete sugar replacement normally requires a designed sweetener system using permitted high-intensity sweeteners, polyols, fibers or other bulking ingredients.
Buyers commonly request a technical data sheet, approved specification, certificate of analysis, safety data sheet, FOS-content declaration, sugar profile, origin statement, allergen declaration, GMO statement, halal or kosher certificate where required, microbiological specification, shelf-life information, label details and packaging configuration.
Global Food Additives can review sourcing options for Fructo-Oligosaccharides according to target specification, powder or syrup form, quantity, destination, packaging, lead time and required documentation.
No. Fiber, prebiotic, reduced sugar, low calorie and digestive-health claims depend on destination-market rules, final formulation, serving size, analytical method, wording and customer responsibility. Always confirm local compliance before commercial use.
Send product name, target specification, FOS content, powder or syrup preference, quantity, destination country, application, packaging preference, delivery term and document requirements. Our team will review your inquiry and respond from orders@foodgradeadditives.com.