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Fructo-oligosaccharides (FOS) are short-chain prebiotic fibers made of fructose units. They occur naturally in foods like chicory root, onions, garlic, and bananas.
Key Points:
Prebiotic: Feeds beneficial gut bacteria (e.g., Bifidobacteria), boosting gut health and immunity.
Health Benefits:
Enhances mineral absorption (calcium/magnesium).
Supports digestion, may ease constipation.
Low glycemic index (minimal blood sugar impact).
Uses: Added to foods/supplements for fiber, or as a low-calorie sweetener (30–50% as sweet as sugar; ~1.5–2 kcal/g).
Caution: May cause gas/bloating if overconsumed (>10g/day). Avoid with IBS/SIBO (high-FODMAP).
In short: FOS is a gut-friendly fiber that nourishes good bacteria, with benefits for digestion and metabolism. Introduce gradually.
Fructo-oligosaccharides (FOS) — Product Summary
CAS No.: 308066-66-2
Fructo-oligosaccharides (FOS) are short-chain prebiotic fibers composed of 2–9 fructose units that resist upper GI digestion and arrive intact in the colon, where they selectively ferment beneficial gut microbiota — particularly Bifidobacterium — to produce short-chain fatty acids.
FOS provides approximately 1.5 kcal/g, significantly lower than conventional sugars (4.0 kcal/g), while its gel-forming properties delay gastric emptying and enhance satiety — ideal for caloric deficit and body recomposition strategies.
Its minimal glycemic impact improves insulin sensitivity, reduces visceral fat accumulation, and supports stable energy levels. FOS also strengthens gut barrier function, attenuates exercise-induced inflammation, and has been shown to lower blood lactate and creatine kinase levels, accelerating athletic recovery.
Specifications of Fructo oligosaccharide CAS 308066-66-2 COA:
Items | Specifications | Results |
Appearance(25℃) | White or off-white powder | Off-white |
Isomerized lactose content, w% | ≥50.0 | Conforms |
Fructose content, w% | ≤1.0 | 0 |
Galactose, w% | ≤15.0 | 9.25 |
Ipilactose, w% | ≤4.0 | 0 |
Lactose content.w% | ≤6.0 | 5.40 |
PH | 3-7 | 3.98 |
Residue on Ignition % | ≤0.5 | 0.03 |
Lead(Pb), mg/Kg | ＜1.0 | |
Arsenic (As), mg/Kg | ≤1.0 | ＜1.0 |
Total Plate Count, CFU/ml | ≤1000 | 40 |
Escherichia coli, MPN/ml | ＜3.0 | ＜3.0 |
Salmonella/25ml | Not detectable | Not detectable |
Conclusion | The product conforms to the above specifications. | |
Product Name:Fructo oligosaccharide
CAS:308066-66-2
MF:N/A
Melting point :N/A
form:powder
color:White
Uses:
Fructo-oligosaccharides (FOS) are a type of prebiotic dietary fiber composed of short chains of fructose (fruit sugar) molecules, typically with 2–10 units. They occur naturally in many plants and are also produced commercially for use as functional food ingredients and supplements.
Here's a detailed breakdown:
Structure: Short chains of fructose molecules linked by β(2→1) bonds, usually ending with a glucose molecule. Common forms include kestose (3 units), nystose (4 units), and fructosylnystose (5 units).
Natural Sources:
Vegetables: Chicory root (richest source), onions, garlic, asparagus, Jerusalem artichokes, leeks.
Fruits: Bananas (slightly unripe), tomatoes.
Grains: Wheat, barley, rye.
Other: Agave, honey.
Low Calorie: Provides ~1.5–2 kcal/g (vs. 4 kcal/g for sugar) since humans lack enzymes to digest β-bonds.
Sweetness: About 30–50% as sweet as sugar, with a clean taste.
Solubility: Highly soluble in water.
Prebiotic: Selectively fermented by beneficial gut bacteria (e.g., Bifidobacteria, Lactobacilli).
Gut Health:
Feeds "good" bacteria, promoting their growth (bifidogenic effect).
Increases production of short-chain fatty acids (SCFAs like butyrate), which nourish colon cells and reduce inflammation.
May alleviate constipation by increasing stool bulk/softness.
Immune Support:
SCFAs strengthen gut barrier function and modulate immune responses.
May reduce risk of infections and allergies.
Mineral Absorption:
Enhances calcium and magnesium uptake in the colon (studies show improved bone density).
Blood Sugar & Lipid Control:
Low glycemic impact; may improve insulin sensitivity.
Modestly lowers LDL cholesterol and triglycerides.
Weight Management:
Promotes satiety and reduces calorie absorption.
Functional Foods: Added to yogurts, cereals, bars, and beverages for fiber content.
Infant Formula: Mimics prebiotics in breast milk (often combined with GOS).
Sweeteners/Sugar Replacers: In "sugar-free" products due to low calories.
Supplements: Sold as powders/capsules for gut health.
Generally Recognized as Safe (GRAS) by the FDA.
Side Effects:
Gas, bloating, or cramps if consumed in excess (>10–15g/day). Start with small doses (2–3g/day).
May worsen symptoms in IBS sufferers (FOS are high-FODMAP carbs).
Contraindications:
Avoid in small intestinal bacterial overgrowth (SIBO) or fructose intolerance.
Consult a doctor if immunocompromised (theoretical risk of bacterial translocation).
| Type | FOS | Inulin | GOS (Galacto-oligosaccharides) |
|---|---|---|---|
| Chain Length | Short (2–10 units) | Longer (>10 units) | Short (2–8 units) |
| Source | Chicory, onions, synthesized | Chicory, agave | Synthesized from lactose |
| Fermentation | Faster in proximal colon | Slower, reaches distal colon | Similar to FOS |
FOS is a prebiotic fiber that boosts beneficial gut bacteria, supports digestion, immunity, and metabolic health. While safe for most people, introduce it gradually to avoid gas/bloating. It’s widely used in functional foods, supplements, and infant nutrition. If you have IBS or SIBO, use caution and consult a healthcare provider
Also, if you have any other questions, you can contact us
FAQ From Wuhan Fortuna Chemical Co.,Ltd
Q1: Can I get a sample for free ?
A: For small QTY and low value product, we can provide sample for free exclude shipping cost. For high value sample, we will charge the basic sample cost, but we can refund all the cost if customers place order after sample test.
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A: Most of our products confirm to international standards like USP/EP/BP/JP/CP. We will provide COA/TDS/MSDS for customers to confirm the specification before placing order.
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A: For less than 100kg gross weight order will ship with courier like FedEx or UPS, we support customers to place courier orders remotely by their account, we will package the goods well and wait for pick up.For more than 100kg goods, we will transport by Air or Sea according to customers' requirement.
Q5: How long is your after-sales service?
A: We accept customer’s quality complaint in three month after customer received the goods. We provide tech.support for all-life if customer place order from our company.
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A: We support customer to provide our products to any rightful third party testing organization to test our products according to the COA specification, if the test result is confirm with COA, we will take all the loss for customers.
Name:Wuhan Fortuna Chemical Co.,Ltd
Category:Others
Trade Category: Trading Company
Employees: 11 - 50 People
Address: Room 2015, No.2 Building, Kaixin Mansion No.107
Company Information: Wuhan Fortuna Chemical Co.,Ltd established in 2006, is a big integrative chemical enterprise being engaged in Pharmaceutical and Intermediates, Food and Feed additives, Fine chemicals,Biochemical and Reagent, which is the members of Hubei E-commerce Chamber.
Our company has professional persons who major in chemical R&D and sicentific management, supply fine chemical products with high quality and close service, also supply custom-tailored products according to our clients' requirement.
We have a positive and self-motivated management work team with a common philosophy, caring and commitment through teamwork, our team strive to achieve success in delighting our clients and ourselves.
Since Wuhan Fortuna Chemical Co., Ltd founded, we continuously innovate our products and improve our service, sales network. Hence, we initiate the first sale mode on net in China, which is the retail trade of small package bring along wholesale of diversified management modes. Our products are exported widely to South Korea, Vietnam, Australia, Europe and South America, highly recommended by our clients.We insist on the management creed “Market is our compass, Quality is our life, Credit is our soul”. Clients’ trust is our forward power, their satisfaction is our struggling goal.
Wuhan Fortuna Chemical Co.,Ltd is a professional manufacturer which provide Fructo oligosaccharide with good quality and best price, welcome to contact us to get COA/TDS/MSDS of Fructo oligosaccharide.
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